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Hernandez J, Lina JM, Dubé J, Lafrenière A, Gagnon JF, Montplaisir JY, Postuma RB, Carrier J. EEG rhythmic and arrhythmic spectral components and functional connectivity at resting state may predict the development of synucleinopathies in idiopathic REM sleep behavior disorder. Sleep 2024:zsae074. [PMID: 38497896 DOI: 10.1093/sleep/zsae074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Indexed: 03/19/2024] Open
Abstract
STUDY OBJECTIVES Idiopathic/isolated REM-sleep behavior disorder (iRBD) often precedes the onset of synucleinopathies. Here, we investigated whether baseline resting-state EEG advanced spectral power and functional connectivity differ between iRBD patients who converted towards a synucleinopathy at follow-up and those who did not. METHODS Eighty-one participants with iRBD (66.89±6.91 years) underwent a baseline resting-state EEG recording, a neuropsychological assessment and a neurological examination. We estimated EEG power spectral density using standard analyses and derived spectral estimates of rhythmic and arrhythmic components. Global and pairwise EEG functional connectivity analyses were computed using the weighted phase-lag index (wPLI). Pixel-based permutation tests were used to compare groups. RESULTS After a mean follow-up of 5.01±2.76 years, 34 patients were diagnosed with a synucleinopathy (67.81±7.34 years) and 47 remained disease-free (65.53±7.09 years). Among patients who converted, 22 were diagnosed with Parkinson's disease and 12 with dementia with Lewy bodies. As compared to patients who did not convert, patients who converted exhibited at baseline higher relative theta standard power, steeper slopes of the arrhythmic component and higher theta rhythmic power mostly in occipital regions. Furthermore, patients who converted showed higher beta global wPLI but lower alpha wPLI between left temporal and occipital regions. CONCLUSION Analyses of resting-state EEG rhythmic and arrhythmic components and functional connectivity suggest an imbalanced excitatory-to-inhibitory activity within large-scale networks, which is associated with later development of a synucleinopathy in iRBD patients.
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Affiliation(s)
- J Hernandez
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of Neuroscience, Université de Montréal, Montreal, Canada
| | - J-M Lina
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- École de technologie supérieure, Montreal Canada
| | - J Dubé
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of Psychology, Université de Montréal, Montreal, Canada
| | - A Lafrenière
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of Psychology, Université de Montréal, Montreal, Canada
| | - J-F Gagnon
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of Psychology, Université du Québec à Montréal, Montreal, Canada
| | - J-Y Montplaisir
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of psychiatry, Université de Montréal, Montreal, Canada
| | - R B Postuma
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, Montreal, Canada
| | - J Carrier
- Center for Advanced Research in Sleep Medicine, Research center, CIUSSS du Nord de l'Île-de-Montréal, Montreal, Canada
- Department of Psychology, Université de Montréal, Montreal, Canada
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Cross N, Zhao JL, Yao C, Carrier J, Postuma R, Gosselin N, Kakinami L, Dang-Vu T. Insomnia disorder predicts self-reported cognitive decline in middle-aged and older adults. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Deshaies-Rugama AS, Blais H, Sekerovic Z, Massicotte M, Carrier J, Thompson C, Nigam M, Desautels A, Montplaisir J, Gosselin N. Sleep architecture in idiopathic hypersomnia. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Simard M, Lapointe A, Bahig H, Carrier J, Zhang S, Campeau M, Filion É, Roberge D, Bouchard H, Bedwani S. PO-1748 A DECT framework to measure the effect of radiation dose on lung function after radiotherapy. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03712-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Moderie C, Carrier J, Dang-Vu TT. [Sleep disorders in patients with a neurocognitive disorder]. Encephale 2021; 48:325-334. [PMID: 34916075 DOI: 10.1016/j.encep.2021.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/24/2021] [Accepted: 08/29/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Sleep disorders are prevalent in patients with a neurocognitive disorder, and diagnosis and treatment in these patients remain challenging in clinical practice. METHODS This narrative review offers a systematic approach to diagnose and treat sleep disorders in neurocognitive disorders. RESULTS Alzheimer's disease is often associated with circadian rhythm disorders, chronic insomnia, and sleep apnea-hypopnea syndrome. Alpha-synucleinopathies (e.g., Parkinson's disease and Lewy body dementia) are often associated with a rapid eye movement sleep behavior disorder, restless legs syndrome, chronic insomnia, and sleep apnea-hypopnea syndrome. A focused history allows to diagnose most sleep disorders. Clinicians should ensure to gather the following information in all patients with a neurocognitive disorder: (1) the presence of difficulties falling asleep or staying asleep, (2) the impact of sleep disturbances on daily functioning (fatigue, sleepiness and other daytime consequences), and (3) abnormal movements in sleep. Sleep diaries and questionnaires can assist clinicians in screening for specific sleep disorders. Polysomnography is recommended if a rapid eye movement sleep behavior disorder or a sleep apnea-hypopnea syndrome are suspected. Sleep complaints should prompt clinicians to ensure that comorbidities interfering with sleep are properly managed. The main treatment for moderate to severe obstructive sleep apnea-hypopnea syndrome remains continuous positive airway pressure, as its efficacy has been demonstrated in patients with neurocognitive disorders. Medications should also be reviewed, and time of administration should be optimized (diuretics and stimulating medications in the morning, sedating medications in the evening). Importantly, cholinesterase inhibitors (especially donepezil) may trigger insomnia. Switching to morning dosing or to an alternative drug may help. Cognitive-behavioral therapy for insomnia is indicated to treat chronic insomnia in neurocognitive disorders. False beliefs regarding sleep should be addressed with the patient and their caregiver. The sleep environment should be optimized (decrease light exposure at night, minimize noise, avoid taking vital signs, etc.). Sleep restriction can be considered as patients with a neurocognitive disorder often spend too much time in bed. The need for naps should be assessed case by case as naps may contribute to insomnia in some patients but allow others to complete their diurnal activities. Trazodone (50mg) may also be used under certain circumstances in chronic insomnia. Recent evidence does not support a role for exogenous melatonin in patients with a neucognitive disorder and insomnia. Patients in long-term care facilities are often deprived of an adequate diurnal exposure to light. Increasing daytime exposure to light may improve sleep and mood. Patients with circadian rhythm disorders can also benefit from light therapy (morning bright light therapy in case of phase delay and evening bright light therapy in case of phase advance). Rapid eye movement sleep behavior disorder can lead to violent behaviors, and the sleeping environment should be secured (e.g., mattress on the floor, remove surrounding objects). Medication exacerbating this disorder should be stopped if possible. High dose melatonin (6 to 18mg) or low dose clonazepam (0.125-0.25mg) at bedtime may be used to reduce symptoms. Melatonin is preferred in first-line as it is generally well tolerated with few side effects. Patients with restless legs syndrome should be investigated for iron deficiency. Medication decreasing dopaminergic activity should be reduced or stopped if possible. Behavioral strategies such as exercise and leg massages may be beneficial. Low-dose dopamine agonists (such as pramipexole 0.125mg two hours before bedtime) can be used to treat the condition, but a prolonged treatment may paradoxically worsen the symptoms. Alpha-2-delta calcium channel ligands can also be used while monitoring for the risk of falls. CONCLUSION Multiple and sustained nonpharmacological approaches are recommended for the treatment of sleep disturbances in patients with neurocognitive disorder. Pharmacological indications remain limited, and further randomized clinical trials integrating a multimodal approach are warranted to evaluate the treatment of sleep disorders in specific neurocognitive disorders.
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Affiliation(s)
- C Moderie
- Département de psychiatrie, université McGill, Montréal, Québec, Canada
| | - J Carrier
- Centre de recherche de l'institut universitaire de gériatrie de Montréal, Montréal, Québec, Canada; Département de psychologie, université de Montréal, Montréal, Québec, Canada; Centre d'études avancées en médecine du sommeil, Montréal, Québec, Canada
| | - T T Dang-Vu
- Centre de recherche de l'institut universitaire de gériatrie de Montréal, Montréal, Québec, Canada; Département de psychologie, université de Montréal, Montréal, Québec, Canada; Département de santé, kinésiologie et physiologie appliquée, centre d'études en neurobiologie comportementale et centre PERFORM, université Concordia, Montréal, Québec, Canada.
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Cox R, Annetts S, Carrier J. MSK aggravations to sun salutations – Managing chronic MSK pain with yoga therapy. A qualitative systematic review. Physiotherapy 2021. [DOI: 10.1016/j.physio.2021.10.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kamio Y, Roy M, Morgan L, Barkati M, Beauchemin M, Carrier J, Basaric B, DeBlois F, Bedwani S. PO-0192 Prototype testing the 3D-printed Montreal split-ring applicator (GYN) using biocompatible materials. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06351-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Dube J, Lina J, Soltani S, Chauvette S, Bukhtiyarova O, Carrier J, Timofeev I. 0354 Age-Related Spectral Changes in NREM And REM Sleep in Mice are Global and Not Local. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Brain topography modulates age-related changes in the human sleep electroencephalogram, which are linked with differences in integrity of specific cortical areas and may reflect local changes in sleep homeostasis. In mice, there is conflicting evidence regarding the topography of age-related changes for NREM and REM sleep. To disambiguate this issue, we investigated in mice the topography of age-related spectral differences for REM and NREM sleep.
Methods
LFP electrodes were implanted in 5 cortical areas and in the hippocampus of 17 C57/BL6 mice (8 young and 9 old, mean age = 7.5 and 16 months). Mice LFPs were recorded for a week and states of vigilance were semi-automatically detected in light and dark periods (12h-12h). Spectral analysis was run on 4s windows. Values were averaged for each electrode and in each period of the light/dark cycle in REM/NREM sleep for slow delta (0.25-2Hz), delta (2-4Hz), theta (4-8Hz), sigma (10-16Hz) and ripples (150-200Hz). Mixed models were computed separately for REM and NREM in dark and light period, with age as group factor and electrode and frequency as repeated factors.
Results
Two-way interactions were found between age and frequency and between electrode and frequency, for NREM and REM in dark and light periods. Each frequency band, except ripples, showed a topographical signature in NREM and REM (e.g. higher power in anterior compared to posterior areas for delta band in NREM sleep). These relative patterns did not change in older mice, but global changes occurred on all electrodes: in older mice, delta power was globally higher in NREM and REM sleep whereas sigma power was lower in REM sleep.
Conclusion
Age-related changes in spectral power of sleeping mice do not vary according to brain topography as in humans. Sleep deprivation studies are needed to investigate whether age is associated with global changes in sleep homeostasis in mice.
Support
This work has been supported by the Quebec Fonds de Recherche Nature et Technologies (FQRNT).
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Affiliation(s)
- J Dube
- Center for advanced research in sleep medicine, CIUSSS du Nord de l’Ile de Montreal, Montreal, QC, CANADA
| | - J Lina
- Center for advanced research in sleep medicine, CIUSSS du Nord de l’Ile de Montreal, Montreal, QC, CANADA
| | - S Soltani
- CERVO Brain Research Center, Laval University, Quebec, QC, CANADA
| | - S Chauvette
- CERVO Brain Research Center, Laval University, Quebec, QC, CANADA
| | - O Bukhtiyarova
- CERVO Brain Research Center, Laval University, Quebec, QC, CANADA
| | - J Carrier
- Center for advanced research in sleep medicine, CIUSSS du Nord de l’Ile de Montreal, Montreal, QC, CANADA
| | - I Timofeev
- CERVO Brain Research Center, Laval University, Quebec, QC, CANADA
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Sanchez E, Duclos C, Van Der Maren S, El-Khatib H, Arbour C, Baril A, Blais H, Carrier J, Gosselin N. 1133 The Recovery of Sleep Oscillations in Acute to Chronic Traumatic Brain Injury. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Slow waves and spindles are essential oscillations occurring during NREM sleep that may be disrupted by moderate to severe traumatic brain injury (TBI). We investigated these oscillations in the acute and chronic trauma stage.
Methods
Four groups were tested with whole-night polysomnography: hospitalized patients with acute TBI (n=10, 29.7±13.8y) or severe orthopedic injuries (n=15, 39.9±17.1y), chronic TBI including 9 returning from the acute TBI group (n=43, 31.9±13.5y), and healthy controls (n=36, 30.5±12.7y). Characteristics for slow waves (density, amplitude, slope, frequency, duration) and spindles (density, amplitude, frequency, duration) were quantified over N2 and N3 sleep for the first three sleep cycles, and groups were compared using one-way ANOVAs.
Results
One-way ANOVAs showed group effects only for slow wave density (F=4.11 to 6.04, p=0.009 to 0.0008)) and spindle density (F=3.3 to 8.8, p=0.02 to 0.00003). These effects were present for the 2nd and 3rd sleep cycles, but not the 1st. More specifically, slow wave density in acute TBI was higher than in controls, and returned to normal levels in the chronic stage. Conversely, spindle density in acute TBI was lower than in controls and returned to normal levels in the chronic stage. No group difference was observed for the orthopedic group.
Conclusion
Our results suggest that immediately after a severely disruptive event such as a TBI, the brain needs additional deeper sleep to recover, resulting in more slow waves but also in less spindles. These changes are only present in the 2nd and 3rd sleep cycles, reflecting an absence of the expected dissipation of slow waves, which may suggest increased homeostatic sleep pressure due to the brain injury. Limits to interpretation include the hospital environment and medication, but the absence of changes in the orthopedic group under similar conditions emphasizes the effect of the brain injury itself.
Support
Canadian Institutes of Health Research (CIHR) and Fonds de Recherche Québec-Santé (FRQS)
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Affiliation(s)
- E Sanchez
- Université de Montréal, Montréal, QC, CANADA
| | - C Duclos
- McGill University, Montreal, QC, CANADA
| | | | - H El-Khatib
- Université de Montréal, Montréal, QC, CANADA
| | - C Arbour
- Université de Montréal, Montréal, QC, CANADA
| | - A Baril
- Boston University, Boston, MA
| | - H Blais
- CIUSSS-NIM, Montréal, QC, CANADA
| | - J Carrier
- Université de Montréal, Montréal, QC, CANADA
| | - N Gosselin
- Université de Montréal, Montréal, QC, CANADA
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Deshaies-Rugama AS, Chami S, Gagnon K, Blais H, Baril AA, Montplaisir J, Carrier J, Gosselin N. Sleep spindles and their association with obstructive sleep apnea severity in men and women. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Van der Maren S, Duclos C, Dumont M, Blais H, Daoust J, Lina JM, Bernard F, Menon D, Carrier J, Gosselin N. Sleep-wake cycle recovery after moderate to severe traumatic brain injury: are ultradian rhythms involved? Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sanchez E, Arbour C, El-Khatib H, Marcotte K, Blais H, Baril AA, Bedetti C, Descoteaux M, Lina JM, Gilbert D, Carrier J, Gosselin N. Sleep spindles are resilient to extensive white matter deterioration. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Wright S, Lafrenière A, Lina JM, Gosselin N, Carrier J. Alteration of coupling of slow-waves and sigma in obstructive sleep apnea. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Selham Z, Guloy S, Bastien C, Carrier J, Beaudoin L. Research process and sleep app design lessons learned from the reflective examination of a sleep study. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chami S, Gagnon K, Martineau Dussault MÈ, Baril AA, Blais H, Carrier J, Montplaisir J, Gosselin N. Slow waves in middle-aged and older adults with obstructive sleep apnea. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Rosinvil T, Bellavance A, Constantin I, Rolland-Dery M, Postuma R, Carrier J, Gagnon JF. The impact of subjective excessive daytime sleepiness on cognition in parkinson disease. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Zolfaghari S, Yao C, Thompson C, Gosselin N, Desautels A, Dang-Vu T, Postuma R, Carrier J. Effects of menopause on sleep symptoms: Canadian longitudinal study on aging. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Martineau-Dussault ME, Baril AA, Sanchez E, Chami S, Legault J, Gagnon K, Descoteaux M, Gilbert D, Carrier J, Montplaisir J, Gosselin N. The estimation of excessive daytime sleepiness in post-stroke patients - a polysomnographic study. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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El-Abd Y, Carrier J, Wilkins L, Uflacker A, Sheeran D, Angle J. 03:36 PM Abstract No. 339 Long-term outcomes after renal artery embolization for angiomyolipoma. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Lapointe A, Lalonde A, Bahig H, Carrier J, Bedwani S, Bouchard H. Robust quantitative contrast‐enhanced dual‐energy CT for radiotherapy applications. Med Phys 2018; 45:3086-3096. [DOI: 10.1002/mp.12934] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 02/27/2018] [Accepted: 04/11/2018] [Indexed: 01/07/2023] Open
Affiliation(s)
- Andréanne Lapointe
- Département de physique Université de Montréal 2900 boulevard Édouard‐Montpetit Montréal QC H3T 1J4Canada
| | - Arthur Lalonde
- Département de physique Université de Montréal 2900 boulevard Édouard‐Montpetit Montréal QC H3T 1J4Canada
| | - Houda Bahig
- Département de radio‐oncologie Centre hospitalier de l’Université de Montréal (CHUM) 1000 rue Saint‐Denis Montréal Québec H2X 0C1Canada
- Centre de recherche du Centre hospitalier de l’Université de Montréal 900 Rue Saint‐Denis Montréal QC H2X 0A9Canada
| | - Jean‐François Carrier
- Département de physique Université de Montréal 2900 boulevard Édouard‐Montpetit Montréal QC H3T 1J4Canada
- Département de radio‐oncologie Centre hospitalier de l’Université de Montréal (CHUM) 1000 rue Saint‐Denis Montréal Québec H2X 0C1Canada
- Centre de recherche du Centre hospitalier de l’Université de Montréal 900 Rue Saint‐Denis Montréal QC H2X 0A9Canada
| | - Stéphane Bedwani
- Département de physique Université de Montréal 2900 boulevard Édouard‐Montpetit Montréal QC H3T 1J4Canada
- Département de radio‐oncologie Centre hospitalier de l’Université de Montréal (CHUM) 1000 rue Saint‐Denis Montréal Québec H2X 0C1Canada
- Centre de recherche du Centre hospitalier de l’Université de Montréal 900 Rue Saint‐Denis Montréal QC H2X 0A9Canada
| | - Hugo Bouchard
- Département de physique Université de Montréal 2900 boulevard Édouard‐Montpetit Montréal QC H3T 1J4Canada
- Département de radio‐oncologie Centre hospitalier de l’Université de Montréal (CHUM) 1000 rue Saint‐Denis Montréal Québec H2X 0C1Canada
- Centre de recherche du Centre hospitalier de l’Université de Montréal 900 Rue Saint‐Denis Montréal QC H2X 0A9Canada
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Lafrenière A, Brayet P, Lina J, Petit D, Montplaisir J, Carrier J. 1019 Eeg Functional Connectivity During Wakefulness And Rem Sleep In Patients With Mild Cognitive Impairment. Sleep 2018. [DOI: 10.1093/sleep/zsy061.1018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - P Brayet
- Center for Advanced Research in Sleep Medicine, CIUSSS du Nord-de-l’Île-de-Montréal - Hôpital du Sacré-Coeur de Montréal, MONTREAL, QC, CANADA
| | - J Lina
- Center for Advanced Research in Sleep Medicine, CIUSSS du Nord-de-l’Île-de-Montréal - Hôpital du Sacré-Coeur de Montréal, MONTREAL, QC, CANADA
| | - D Petit
- Center for Advanced Research in Sleep Medicine, CIUSSS du Nord-de-l’Île-de-Montréal - Hôpital du Sacré-Coeur de Montréal, MONTREAL, QC, CANADA
| | - J Montplaisir
- Center for Advanced Research in Sleep Medicine, CIUSSS du Nord-de-l’Île-de-Montréal - Hôpital du Sacré-Coeur de Montréal, MONTREAL, QC, CANADA
| | - J Carrier
- Université de Montréal, MONTREAL, QC, CANADA
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22
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Latreille V, Gaubert M, Dubé J, Lina J, Gagnon J, Carrier J. 0272 Thinning of Medial Frontal and Anterior Cingulate Cortices Explain Age-related Changes in REM and NREM Sleep. Sleep 2018. [DOI: 10.1093/sleep/zsy061.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- V Latreille
- Centre d’études avancées en médecine du sommeil, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, CANADA
- Department of Psychology, University of Montreal, Montreal, QC, CANADA
| | - M Gaubert
- Centre d’études avancées en médecine du sommeil, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, CANADA
- Department of Psychology, University of Quebec in Montreal, Montreal, QC, CANADA
| | - J Dubé
- Centre d’études avancées en médecine du sommeil, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, CANADA
- Department of Psychology, University of Montreal, Montreal, QC, CANADA
| | - J Lina
- Centre d’études avancées en médecine du sommeil, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, CANADA
- Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC, CANADA
| | - J Gagnon
- Centre d’études avancées en médecine du sommeil, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, CANADA
- Department of Psychology, University of Quebec in Montreal, Montreal, QC, CANADA
| | - J Carrier
- Centre d’études avancées en médecine du sommeil, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, CANADA
- Department of Psychology, University of Montreal, Montreal, QC, CANADA
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Gagnon K, Baril A, Montplaisir J, Carrier J, Chami S, Gauthier S, Lafond C, Gagnon J, Gosselin N. 0593 Detection Of Mild Cognitive Impairment In Older Individuals With Obstructive Sleep Apnea. Sleep 2018. [DOI: 10.1093/sleep/zsy061.592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Gagnon
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | - A Baril
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | - J Montplaisir
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | - J Carrier
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | - S Chami
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | | | - C Lafond
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | - J Gagnon
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
| | - N Gosselin
- Center for Advanced Research in Sleep Medicine, Montréal, QC, CANADA
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Bourgouin PA, Rahayel S, Gaubert M, Postuma R, Montplaisir J, Carrier J, Monchi O, Pelletier A, Gagnon JF. Gray matter volume correlates of depressive and anxiety symptoms in idiopathic REM sleep behavior disorder. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rahayel S, Postuma R, Montplaisir J, Génier Marchand D, Escudier F, Gaubert M, Bourgouin PA, Carrier J, Monchi O, Joubert S, Blanc F, Gagnon JF. Cortical basis of cognitive impairment in idiopathic REM sleep behavior disorder. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Rahayel S, Gagnon JF, Botzung A, Postuma R, Stackfleth M, Montplaisir J, Philippi N, Carrier J, Demuynck C, Cretin B, Monchi O, Armspach JP, Blanc F. Cortical and subcortical gray matter changes in different prodromal phenotypes of dementia with lewy bodies. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ayas N, Hanly P, Skomro R, Warby S, Carrier J. Feasibility of a multi-site obstructive sleep apnea biomarker registry: the canadian experience. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sanchez E, Arbour C, El-Khatib H, Bedetti C, Blais H, Baril A, Carrier J, Gosselin N. 1173 FATIGUE AND SLEEP SLOW OSCILLATIONS ARE ASSOCIATED WITH WHITE MATTER INTEGRITY FOLLOWING MODERATE TO SEVERE TRAUMATIC BRAIN INJURY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.1172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gagnon K, Baril A, Montplaisir J, Carrier J, D’Aragon C, Gauthier S, Lafond C, Gagnon J, Gosselin N. 0283 SUBJECTIVE COGNITIVE COMPLAINT IN LATE MIDDLE-AGED AND OLDER INDIVIDUALS WITH OBSTRUCTIVE SLEEP APNEA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bouchard M, Fortin-Langelier E, Frenette S, Cyr G, Latreille C, Lina J, Grossman N, Carrier J. 0286 IS TRANSCRANIAL ALTERNATING CURRENT STIMULATION (TACS) AN EFFECTIVE TOOL TO ENTRAIN SPINDLES DURING SLEEP IN OLDER INDIVIDUALS? Sleep 2017. [DOI: 10.1093/sleepj/zsx050.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Rosinvil T, Bouvier J, Fortin M, Robillard R, Bouchard M, Gaudet-Fex B, Gaudreault P, Dubé J, Gosselin N, Lina J, Carrier J. 0844 AGE-RELATED EFFECTS ON SLEEP LOSS IN WAKING EEG CONNECTIVITY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Brayet P, Lafrenière A, Petit D, Gagnon J, Gosselin N, Lina J, Carrier J, Montplaisir J. 0284 FUNCTIONAL CONNECTIVITY DURING REM SLEEP IN HEALTHY AGING. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Baril A, Gagnon K, Montplaisir J, Sanchez E, Bedetti C, Carrier J, De Beaumont L, Gilbert D, Gosselin N. 0612 WHITE MATTER DIFFUSIVITY CHANGES WITH INTERMITTENT HYPOXEMIA IN OBSTRUCTIVE SLEEP APNEA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Saad MF, Parvaresh A, Carrier J, Lafrenière A, Bujaki B, Benoit A, Lalande S, Welch K, De Koninck JM, Douglass A, Lee E, Busby K, Robillard R. 1088 HEART RATE SLEEP PROFILE: A NEW BIOMARKER FOR DEPRESSION? Sleep 2017. [DOI: 10.1093/sleepj/zsx050.1087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Daneault V, Dumont M, Massé É, Forcier P, Doyon J, Vandewalle G, Carrier J. 0274 NON-VISUAL EFFECT OF LIGHT ON COGNITIVE BRAIN FUNCTION: AGE AND IMPACT OF LENS YELLOWING. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bourque A, Bedwani S, Filion E, Carrier J. SU-C-BRA-02: A Lung Tumor Autocontouring Algorithm Based On Particle Filter for Dynamic Magnetic Resonance. Med Phys 2016. [DOI: 10.1118/1.4955563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lapointe A, Bahig H, Zerouali K, Blais D, De Guise J, Carrier J, Filion E, Roberge D, Bedwani S. SU-F-J-91: Sparing Lung Function in Treatment Planning Using Dual Energy Tomography. Med Phys 2016. [DOI: 10.1118/1.4955999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Abstract
Notwithstanding its effects on the classical visual system allowing image formation, light acts upon several non-image-forming (NIF) functions including body temperature, hormonal secretions, sleep-wake cycle, alertness, and cognitive performance. Studies have shown that NIF functions are maximally sensitive to blue wavelengths (460–480 nm), in comparison to longer light wavelengths. Higher blue light sensitivity has been reported for melatonin suppression, pupillary constriction, vigilance, and performance improvement but also for modulation of cognitive brain functions. Studies investigating acute stimulating effects of light on brain activity during the execution of cognitive tasks have suggested that brain activations progress from subcortical regions involved in alertness, such as the thalamus, the hypothalamus, and the brainstem, before reaching cortical regions associated with the ongoing task. In the course of aging, lower blue light sensitivity of some NIF functions has been reported. Here, we first describe neural pathways underlying effects of light on NIF functions and we discuss eye and cerebral mechanisms associated with aging which may affect NIF light sensitivity. Thereafter, we report results of investigations on pupillary constriction and cognitive brain sensitivity to light in the course of aging. Whereas the impact of light on cognitive brain responses appears to decrease substantially, pupillary constriction seems to remain more intact over the lifespan. Altogether, these results demonstrate that aging research should take into account the diversity of the pathways underlying the effects of light on specific NIF functions which may explain their differences in light sensitivity.
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Affiliation(s)
- V Daneault
- Functional Neuroimaging Unit, University of Montreal Geriatric Institute, Montreal, QC, Canada. .,Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, Montreal, QC, Canada. .,Department of Psychology, University of Montreal, Montreal, QC, Canada.
| | - M Dumont
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, Montreal, QC, Canada
| | - É Massé
- Functional Neuroimaging Unit, University of Montreal Geriatric Institute, Montreal, QC, Canada.,Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, Montreal, QC, Canada
| | - G Vandewalle
- Department of Psychology, University of Montreal, Montreal, QC, Canada.,Cyclotron Research Centre, University of Liège, Liège, Belgium
| | - J Carrier
- Functional Neuroimaging Unit, University of Montreal Geriatric Institute, Montreal, QC, Canada.,Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, Montreal, QC, Canada.,Department of Psychology, University of Montreal, Montreal, QC, Canada
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Rosinvil T, Lafortune M, Sekerovic Z, Bouchard M, Dubé J, Latulipe-Loiselle A, Martin N, Lina JM, Carrier J. Age-related changes in sleep spindles characteristics during daytime recovery following a 25-hour sleep deprivation. Front Hum Neurosci 2015; 9:323. [PMID: 26089788 PMCID: PMC4452883 DOI: 10.3389/fnhum.2015.00323] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 05/19/2015] [Indexed: 11/13/2022] Open
Abstract
Objectives: The mechanisms underlying sleep spindles (~11–15 Hz; >0.5 s) help to protect sleep. With age, it becomes increasingly difficult to maintain sleep at a challenging time (e.g., daytime), even after sleep loss. This study compared spindle characteristics during daytime recovery and nocturnal sleep in young and middle-aged adults. In addition, we explored whether spindles characteristics in baseline nocturnal sleep were associated with the ability to maintain sleep during daytime recovery periods in both age groups. Methods: Twenty-nine young (15 women and 14 men; 27.3 y ± 5.0) and 31 middle-aged (19 women and 13 men; 51.6 y ± 5.1) healthy subjects participated in a baseline nocturnal sleep and a daytime recovery sleep after 25 hours of sleep deprivation. Spindles were detected on artifact-free Non-rapid eye movement (NREM) sleep epochs. Spindle density (nb/min), amplitude (μV), frequency (Hz), and duration (s) were analyzed on parasagittal (linked-ears) derivations. Results: In young subjects, spindle frequency increased during daytime recovery sleep as compared to baseline nocturnal sleep in all derivations, whereas middle-aged subjects showed spindle frequency enhancement only in the prefrontal derivation. No other significant interaction between age group and sleep condition was observed. Spindle density for all derivations and centro-occipital spindle amplitude decreased whereas prefrontal spindle amplitude increased from baseline to daytime recovery sleep in both age groups. Finally, no significant correlation was found between spindle characteristics during baseline nocturnal sleep and the marked reduction in sleep efficiency during daytime recovery sleep in both young and middle-aged subjects. Conclusion: These results suggest that the interaction between homeostatic and circadian pressure modulates spindle frequency differently in aging. Spindle characteristics do not seem to be linked with the ability to maintain daytime recovery sleep.
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Affiliation(s)
- T Rosinvil
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
| | - M Lafortune
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
| | - Z Sekerovic
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
| | - M Bouchard
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
| | - J Dubé
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
| | | | - N Martin
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
| | - J M Lina
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Electrical Engineering, École de Technologie Supérieure Montréal, QC, Canada
| | - J Carrier
- Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal Montréal, QC, Canada ; Department of Psychology, Université de Montréal Montréal, QC, Canada ; Research Center, Institut Universitaire Gériatrique de Montréal Montréal, QC, Canada
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Majamanda J, Maureen D, Munkhondia TM, Carrier J. The Effectiveness of Community-Based Nutrition Education on the Nutrition Status of Under-five Children in Developing Countries. A Systematic Review. Malawi Med J 2014; 26:115-118. [PMID: 26167260 PMCID: PMC4325345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
AIM This systematic review aimed at examining the best available evidence on the effectiveness of community-based nutrition education in improving the nutrition status of under five children in developing countries. METHODS A systematic search of the literature was conducted utilising the following data bases: Cumulative Index to Nursing and Allied Health Literature (CINAHL), EMBASE, Medline, and Web of Knowledge. 9 studies were identified for the critical appraisal process. The Joanna Briggs Institute (JBI) critical appraisal check-list for experimental studies was utilised and two reviewers conducted the appraisal process independently. 7 studies were included for this review and data was extracted using the JBI data extraction form for experimental studies. The extracted data was heterogeneous as such narrative synthesis was conducted. RESULTS The nutritional status of children in all studies improved and this was evidenced by increases in weight, height, mid upper arm circumference and reduced morbidity. Key messages about education were age at introduction of complementary foods, nutrition value on different types of feeds found locally and frequency of feeding the children. However, there were varied results regarding the effects of the intervention on the nutrition status of children. This was attributed by differences in implementers' characteristics, different intervention strategy and intensity, difference in age of the children at enrolment, pre-existing children's growth and nutritional status and follow-up periods. In addition to home visiting, conducting group meetings of care givers and community leaders, providing education twice a week and use of cooking demonstrations have shown that they produce highly significant findings. CONCLUSION The evidence from the identified studies suggests that community- based nutrition education improves the nutrition status of under-five children in developing countries.
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Affiliation(s)
- J Majamanda
- Kamuzu College of Nursing, University of Malawi, Blantyre Campus, P.O Box 415, Blantyre
| | - D Maureen
- Kamuzu College of Nursing, University of Malawi, Blantyre Campus, P.O Box 415, Blantyre
| | - T M Munkhondia
- Kamuzu College of Nursing, University of Malawi, Lilongwe Campus, P/Bag 1, Lilongwe
| | - J Carrier
- Cardiff University, School of Nursing and Midwifery Studies, MSc RGN PGCE Dip
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Lord C, Sekerovic Z, Carrier J. Sleep regulation and sex hormones exposure in men and women across adulthood. ACTA ACUST UNITED AC 2014; 62:302-10. [PMID: 25218407 DOI: 10.1016/j.patbio.2014.07.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 07/11/2014] [Indexed: 02/02/2023]
Abstract
This review aims to discuss how endogenous and exogenous testosterone exposures in men and estrogens/progesterone exposures in women interact with sleep regulation. In young men, testosterone secretion peaks during sleep and is linked to sleep architecture. Animal and human studies support the notion that sleep loss suppresses testosterone secretion. Testosterone levels decline slowly throughout the aging process, but relatively few studies investigate its impact on age-related sleep modifications. Results suggest that poorer sleep quality is associated with lower testosterone concentrations and that sleep loss may have a more prominent effect on testosterone levels in older individuals. In women, sex steroid levels are characterized by a marked monthly cycle and reproductive milestones such as pregnancy and menopause. Animal models indicate that estrogens and progesterone influence sleep. Most studies do not show any clear effects of the menstrual cycle on sleep, but sample sizes are too low, and research designs often inhibit definitive conclusions. The effects of hormonal contraceptives on sleep are currently unknown. Pregnancy and the postpartum period are associated with increased sleep disturbances, but their relation to the hormonal milieu still needs to be determined. Finally, studies suggest that menopausal transition and the hormonal changes associated with it are linked to lower subjective sleep quality, but results concerning objective sleep measures are less conclusive. More research is necessary to unravel the effects of vasomotor symptoms on sleep. Hormone therapy seems to induce positive effects on sleep, but key concerns are still unresolved, including the long-term effects and efficacy of different hormonal regimens.
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Affiliation(s)
- C Lord
- Département de psychologie, université de Montréal, Pavillon Marie-Victorin, 90, avenue Vincent-d'Indy, H2V 2S9 Montréal, Québec, Canada
| | - Z Sekerovic
- Département de psychologie, université de Montréal, Pavillon Marie-Victorin, 90, avenue Vincent-d'Indy, H2V 2S9 Montréal, Québec, Canada
| | - J Carrier
- Département de psychologie, université de Montréal, Pavillon Marie-Victorin, 90, avenue Vincent-d'Indy, H2V 2S9 Montréal, Québec, Canada; Center for advanced research in sleep medicine, hôpital du Sacré-Cœur de Montréal, 5400, boulevard Gouin-Ouest, H4J 1C5 Montréal, Québec, Canada; Institut universitaire de gériatrie de Montréal, université de Montréal, Pavillon Côte des neiges, 4565, chemin Queen-Mary, H3W1W5 Montréal, Québec, Canada.
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Bernier M, Trépanier F, Carrier J, Vallée R. High mechanical strength fiber Bragg gratings made with infrared femtosecond pulses and a phase mask. Opt Lett 2014; 39:3646-3649. [PMID: 24978558 DOI: 10.1364/ol.39.003646] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report that by using 800 nm femtosecond pulses and the phase-mask technique, first-order fiber Bragg gratings with refractive index modulation in excess of 1×10(-3) can be written through both the acrylate and polyimide coatings of unloaded standard silica fibers without noticeable degradation of mechanical strength. We also demonstrate that the same experimental conditions can be applied for efficient FBG writing through the polyimide coating of pure silica core fibers, opening significant opportunities in the field of fiber sensors.
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Di SA, Bedwani S, Carrier J. TU-F-18A-03: Improving Tissue Segmentation for Monte Carlo Dose Calculation Using DECT Data. Med Phys 2014. [DOI: 10.1118/1.4889339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Labine A, Chav R, Carrier J, DeGuise J, Bedwani S. SU-E-J-87: Lung Deformable Image Registration Using Surface Mesh Deformation for Dose Distribution Combination. Med Phys 2014. [DOI: 10.1118/1.4888139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Laventure S, Fogel S, Albouy G, Sévigny-Dupont P, Carrier J, Doyon J. Motor memory consolidation potentiated by exposition to a conditioned stimulus in stage 2 sleep. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Gagnon K, Khoury S, Carrier J, Montplaisir J, Lavigne G, Gosselin N. Are sleep complaints following mild traumatic brain injury associated with changes in the characteristics of sleep slow waves? Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Desjardins M, Godbout J, Montplaisir J, Carrier J, Zadra A. Analysis of eeg functional connectivity prior to somnambulism. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Martin N, Godbout J, Pouliot P, Doyon J, Maquet P, Carrier J. Functional imaging of NREM recovery sleep slow waves in young and older subjects : preliminary results. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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