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Kofler MJ, Groves NB, Chan ESM, Marsh CL, Cole AM, Gaye F, Cibrian E, Tatsuki MO, Singh LJ. Working memory and inhibitory control deficits in children with ADHD: an experimental evaluation of competing model predictions. Front Psychiatry 2024; 15:1277583. [PMID: 38779551 PMCID: PMC11110569 DOI: 10.3389/fpsyt.2024.1277583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 03/07/2024] [Indexed: 05/25/2024] Open
Abstract
Introduction Children with ADHD demonstrate difficulties on many different neuropsychological tests. However, it remains unclear whether this pattern reflects a large number of distinct deficits or a small number of deficit(s) that broadly impact test performance. The current study is among the first experiments to systematically manipulate demands on both working memory and inhibition, with implications for competing conceptual models of ADHD pathogenesis. Method A clinically evaluated, carefully phenotyped sample of 110 children with ADHD, anxiety disorders, or co-occurring ADHD+anxiety (Mage=10.35, 44 girls; 69% White Not Hispanic/Latino) completed a counterbalanced, double dissociation experiment, with two tasks each per inhibition (low vs. high) x working memory (low vs. high) condition. Results Bayesian and frequentist models converged in indicating that both manipulations successfully increased demands on their target executive function (BF10>5.33x108, p<.001). Importantly, occupying children's limited capacity working memory system produced slower response times and reduced accuracy on inhibition tasks (BF10>317.42, p<.001, d=0.67-1.53). It also appeared to differentially reduce inhibition (and non-inhibition) accuracy for children with ADHD relative to children with anxiety (BF10=2.03, p=.02, d=0.50). In contrast, there was strong evidence against models that view working memory deficits as secondary outcomes of underlying inhibition deficits in ADHD (BF01=18.52, p=.85). Discussion This pattern indicates that working memory broadly affects children's ability to inhibit prepotent tendencies and maintain fast/accurate performance, and may explain the errors that children with ADHD make on inhibition tests. These findings are broadly consistent with models describing working memory as a causal mechanism that gives rise to secondary impairments. In contrast, these findings provide evidence against models that view disinhibition as a cause of working memory difficulties or view working memory as a non-causal correlate or epiphenomenon in ADHD.
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Affiliation(s)
- Michael J. Kofler
- Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Nicole B. Groves
- Department of Psychiatry, Seattle Children’s Hospital, Seattle, WA, United States
| | - Elizabeth S. M. Chan
- Graduate School of Applied and Professional Psychology, Rutgers University, New Brunswick, NJ, United States
| | - Carolyn L. Marsh
- Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Alissa M. Cole
- Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Fatou Gaye
- Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Enrique Cibrian
- Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Miho O. Tatsuki
- Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Leah J. Singh
- Department of Psychology, Florida State University, Tallahassee, FL, United States
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Ilbegi S, Buitelaar JK, Hoekstra PJ, Hartman CA, Franke B, Faraone SV, Oosterlaan J, Luman M, van Lieshout M, Rommelse NNJ. Neurocognitive markers of late-onset ADHD: a 6-year longitudinal study. J Child Psychol Psychiatry 2021; 62:244-252. [PMID: 33059383 DOI: 10.1111/jcpp.13272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 04/05/2020] [Accepted: 04/29/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND There is an increased interest in 'late-onset' attention-deficit/hyperactivity disorder (ADHD), referring to the onset of clinically significant ADHD symptoms after the age of 12 years. This study aimed to examine whether unaffected siblings with late-onset ADHD could be differentiated from stable unaffected siblings by their neurocognitive functioning in childhood. METHODS We report findings from a 6-year prospective, longitudinal study of the Dutch part of the International Multicenter ADHD Genetics (IMAGE) study, including individuals with childhood-onset (persistent) ADHD (n = 193), their siblings with late-onset ADHD (n = 34), their stable unaffected siblings (n = 111) and healthy controls (n = 186). At study entry (mean age: 11.3) and follow-up (mean age: 17.01), participants were assessed for ADHD by structured psychiatric interviews and multi-informant questionnaires. Several neurocognitive functions were assessed at baseline and after 6 years, including time reproduction, timing variability (reaction time variability and time production variability), reaction time speed, motor control and working memory; intelligence was taken as a measure of overall neurocognitive functioning. RESULTS Siblings with late-onset ADHD were similar to individuals with childhood-onset ADHD in showing longer reaction times and/or higher error rates on all neurocognitive measures at baseline and follow-up, when compared to healthy controls. They differed from stable unaffected siblings (who were similar to healthy controls) by greater reaction time variability and timing production variability at baseline. No significant group by time interaction was found for any of the tasks. CONCLUSIONS For unaffected siblings of individuals with ADHD, reaction time variability and timing production variability may serve as neurocognitive marker for late-onset ADHD.
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Affiliation(s)
- Shahrzad Ilbegi
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan K Buitelaar
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands.,Karakter Child and Adolescent Psychiatry University Centre, Nijmegen, The Netherlands
| | - Pieter J Hoekstra
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Catharina A Hartman
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Barbara Franke
- Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, The Netherlands.,Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Stephen V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Jaap Oosterlaan
- Emma Neuroscience Group, Amsterdam Reproduction & Development, Department of Pediatrics, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam/Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Clinical Neuropsychology Section, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Marjolein Luman
- Emma Neuroscience Group, Amsterdam Reproduction & Development, Department of Pediatrics, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam/Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Clinical Neuropsychology Section, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Marloes van Lieshout
- Emma Neuroscience Group, Amsterdam Reproduction & Development, Department of Pediatrics, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam/Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Clinical Neuropsychology Section, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Nanda N J Rommelse
- Karakter Child and Adolescent Psychiatry University Centre, Nijmegen, The Netherlands.,Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Wass SV, Daubney K, Golan J, Logan F, Kushnerenko E. Elevated physiological arousal is associated with larger but more variable neural responses to small acoustic change in children during a passive auditory attention task. Dev Cogn Neurosci 2019; 37:100612. [PMID: 30595398 PMCID: PMC6969298 DOI: 10.1016/j.dcn.2018.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 12/03/2018] [Accepted: 12/19/2018] [Indexed: 02/06/2023] Open
Abstract
Little is known of how autonomic arousal relates to neural responsiveness during auditory attention. We presented N = 21 5-7-year-old children with an oddball auditory mismatch paradigm, whilst concurrently measuring heart rate fluctuations. Children with higher mean autonomic arousal, as indexed by higher heart rate (HR) and decreased high-frequency (0.15-0.8 Hz) variability in HR, showed smaller amplitude N250 responses to frequently presented (70%), 500 Hz standard tones. Follow-up analyses showed that the modal evoked response was in fact similar, but accompanied by more large and small amplitude responses and greater variability in peak latency in the high HR group, causing lower averaged responses. Similar patterns were also observed when examining heart rate fluctuations within a testing session, in an analysis that controlled for between-participant differences in mean HR. In addition, we observed larger P150/P3a amplitudes in response to small acoustic contrasts (750 Hz tones) in the high HR group. Responses to large acoustic contrasts (bursts of white noise), however, evoked strong early P3a phase in all children and did not differ by high/low HR. Our findings suggest that elevated physiological arousal may be associated with high variability in auditory ERP responses in young children, along with increased responsiveness to small acoustic changes.
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Affiliation(s)
- S V Wass
- University of East London, Water Lane, London, E15 4LZ, UK.
| | - K Daubney
- University of East London, Water Lane, London, E15 4LZ, UK
| | - J Golan
- University of East London, Water Lane, London, E15 4LZ, UK
| | - F Logan
- University of East London, Water Lane, London, E15 4LZ, UK
| | - E Kushnerenko
- University of East London, Water Lane, London, E15 4LZ, UK.
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Reaction time variability in ADHD: A meta-analytic review of 319 studies. Clin Psychol Rev 2013; 33:795-811. [PMID: 23872284 DOI: 10.1016/j.cpr.2013.06.001] [Citation(s) in RCA: 402] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 05/31/2013] [Accepted: 06/03/2013] [Indexed: 11/21/2022]
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Pagé MP, Cooper RL. Novelty stress and reproductive state alters responsiveness to sensory stimuli and 5-HT neuromodulation in crayfish. Comp Biochem Physiol A Mol Integr Physiol 2004; 139:149-58. [PMID: 15528163 DOI: 10.1016/j.cbpb.2004.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2004] [Revised: 08/04/2004] [Accepted: 08/05/2004] [Indexed: 11/17/2022]
Abstract
Sensory stimuli can produce varied responses depending on the physiological state of an animal. Stressors and reproductive stage can result in altered biochemical status that changes the responsiveness of an animal to hormones and neuromodulators, which affects whole animal behavior in relation to sensory stimuli. Crayfish serve as a model for examining the effects of neuromodulators at the neuromuscular junctions (NMJs) and for alterations in stereotypic behaviors for particular stimuli. Thus, we used crayfish to examine the effect of novelty stressors in males and the effect of being gravid in female crayfish to exogenous application of serotonin (5-HT). The responsiveness of neuromuscular junctions to 5-HT revealed that stressed as well as gravid crayfish have a reduced response to 5-HT at NMJs. The stressed crayfish were not fatigued since the basal synaptic responses are large and still showed a pronounced response to 5-HT. Using intact animals to examine a tail flip behavior, we showed that the rate of habituation in tail flipping to a strong repetitive stimulus on the telson is reduced in stressed males. Gravid females show no tail flipping behavior upon telson stimulation.
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Affiliation(s)
- Maurice-Pierre Pagé
- Department of Biology, University of Kentucky, Rose St., Lexington, 40506-0225, USA
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Dagan Y, Zeevi-Luria S, Sever Y, Hallis D, Yovel I, Sadeh A, Dolev E. Sleep quality in children with attention deficit hyperactivity disorder: an actigraphic study. Psychiatry Clin Neurosci 1997; 51:383-6. [PMID: 9472123 DOI: 10.1111/j.1440-1819.1997.tb02604.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The aim of the present study was to compare the sleep of 12 children with attention deficit hyperactivity disorder (ADHD) with that of 12 normal controls. The children were examined in their natural environment, using continuous actigraphic monitoring over several consecutive nights, as well as undergoing subjective parental reports. It was hypothesized that children diagnosed with ADHD would suffer from reduced sleep quality than children without ADHD. This hypothesis was supported by the actigraphic measures, but not supported by the subjective parental reports. It was also found that the sleep quality of the two groups differed over the course of the night, which suggests a difference in sleep architecture. Various possible explanations for these findings, their implications regarding the relationship between sleep and ADHD, and the resulting treatment ramifications are discussed, and suggestions for further research are provided.
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Affiliation(s)
- Y Dagan
- Tel Aviv University Sleep Disorders Laboratory, Israel
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Abstract
Attention deficit disorder (ADD) in adolescents has received scant attention when compared with that given to children. With or without hyperactivity, ADD does not disappear at puberty and is an important factor in scholastic and social failure in adolescents. As a condition associated with decreased metabolism in the premotor and prefrontal superior cerebral cortex, ADD in adolescents responds well to treatment with stimulants, tricyclic antidepressants and monoamine oxidase inhibitors. Nonpharmacologic modalities such as behavior modification, individual and family therapy, and cognitive therapy are useful adjuncts to psychopharmacologic management. Without effective treatment, ADD often results in increased risk of trauma, substance abuse and conduct and affective disorders during adolescence, and marital disharmony, family dysfunction, divorce, and incarceration in adulthood. Properly treated with medication and counseling, adolescents with ADD succeed as well as their peers.
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Affiliation(s)
- H C Faigel
- University Health Service, Brandeis University, Waltham, MA 02254-9110, USA
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Ornitz EM, Hanna GL, de Traversay J. Prestimulation-induced startle modulation in attention-deficit hyperactivity disorder and nocturnal enuresis. Psychophysiology 1992; 29:437-51. [PMID: 1410175 DOI: 10.1111/j.1469-8986.1992.tb01717.x] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Startle modulation was induced by prestimulation in 43, 6-11 year old boys with attention-deficit hyperactivity disorder (ADHD), 13 of whom were or had been enuretic, 17 age-matched enuretic boys, and 42 age-matched normal boys, using 60-ms and 120-ms prestimulation intervals and a 4000-ms continuous tone. There was a significant multivariate effect of enuresis on startle amplitude modulation. This effect was attributed primarily to the reduction of amplitude inhibition following the 120-ms prestimulation interval regardless of whether or not enuresis was associated with ADHD. There was no effect of ADHD on startle modulation by prestimulation. The inhibition following the 120-ms prestimulation interval in the enuretic boys was reduced to the level of 5-year-old normal children, suggesting a maturational component of the deficient startle inhibition. The neurophysiologic dysfunction underlying the deficient startle inhibition in enuresis, but not ADHD, is discussed in terms of a possible dysfunction of mesopontine reticular mechanisms mediating preattentive processing of signals associated with spinal reflexes involved in urinary bladder control.
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Affiliation(s)
- E M Ornitz
- Department of Psychiatry, University of California, Los Angeles
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