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de Lima-Pardini AC, Mikhail Y, Dominguez-Vargas AU, Dancause N, Scott SH. Transcranial magnetic stimulation in non-human primates: A systematic review. Neurosci Biobehav Rev 2023; 152:105273. [PMID: 37315659 DOI: 10.1016/j.neubiorev.2023.105273] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 02/06/2023] [Accepted: 06/02/2023] [Indexed: 06/16/2023]
Abstract
Transcranial magnetic stimulation (TMS) is widely employed as a tool to investigate and treat brain diseases. However, little is known about the direct effects of TMS on the brain. Non-human primates (NHPs) are a valuable translational model to investigate how TMS affects brain circuits given their neurophysiological similarity with humans and their capacity to perform complex tasks that approach human behavior. This systematic review aimed to identify studies using TMS in NHPs as well as to assess their methodological quality through a modified reference checklist. The results show high heterogeneity and superficiality in the studies regarding the report of the TMS parameters, which have not improved over the years. This checklist can be used for future TMS studies with NHPs to ensure transparency and critical appraisal. The use of the checklist would improve methodological soundness and interpretation of the studies, facilitating the translation of the findings to humans. The review also discusses how advancements in the field can elucidate the effects of TMS in the brain.
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Affiliation(s)
- Andrea C de Lima-Pardini
- Centre for Neuroscience Studies, Queen's University, Kingston, ON, Canada; Canadian Platform for Trials in Non-Invasive Brain Stimulation (CanStim), Montréal, QC, Canada.
| | - Youstina Mikhail
- Canadian Platform for Trials in Non-Invasive Brain Stimulation (CanStim), Montréal, QC, Canada; Département de Neurosciences, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - Adan-Ulises Dominguez-Vargas
- Canadian Platform for Trials in Non-Invasive Brain Stimulation (CanStim), Montréal, QC, Canada; Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, Montréal, QC, Canada; Département de Neurosciences, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - Numa Dancause
- Canadian Platform for Trials in Non-Invasive Brain Stimulation (CanStim), Montréal, QC, Canada; Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Université de Montréal, Montréal, QC, Canada; Département de Neurosciences, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - Stephen H Scott
- Centre for Neuroscience Studies, Queen's University, Kingston, ON, Canada; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada; Department of Medicine, Queen's University, Kingston, ON, Canada; Canadian Platform for Trials in Non-Invasive Brain Stimulation (CanStim), Montréal, QC, Canada
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Dodick DW, Schembri CT, Helmuth M, Aurora SK. Transcranial Magnetic Stimulation for Migraine: A Safety Review. Headache 2010; 50:1153-63. [DOI: 10.1111/j.1526-4610.2010.01697.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Changes in intracortical excitability after successful epilepsy surgery. Epilepsy Res 2008; 79:55-62. [DOI: 10.1016/j.eplepsyres.2007.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Revised: 10/31/2007] [Accepted: 12/29/2007] [Indexed: 11/17/2022]
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Wang H, Wang X, Wetzel W, Scheich H. Rapid-rate transcranial magnetic stimulation of animal auditory cortex impairs short-term but not long-term memory formation. Eur J Neurosci 2006; 23:2176-84. [PMID: 16630064 DOI: 10.1111/j.1460-9568.2006.04745.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bilateral rapid-rate transcranial magnetic stimulation (rTMS) of gerbil auditory cortex with a miniature coil device was used to study short-term and long-term effects on discrimination learning of frequency-modulated tones. We found previously that directional discrimination of frequency modulation (rising vs. falling) relies on auditory cortex processing and that formation of its memory depends on local protein synthesis. Here we show that, during training over 5 days, certain rTMS regimes contingent on training had differential effects on the time course of learning. When rTMS was applied several times per day, i.e. four blocks of 5 min rTMS each followed 5 min later by a 3-min training block and 15-min intervals between these blocks (experiment A), animals reached a high discrimination performance more slowly over 5 days than did controls. When rTMS preceded only the first two of four training blocks (experiment B), or when prolonged rTMS (20 min) preceded only the first block, or when blocks of experiment A had longer intervals (experiments C and D), no significant day-to-day effects were found. However, in experiment A, and to some extent in experiment B, rTMS reduced the within-session discrimination performance. Nevertheless the animals learned, as demonstrated by a higher performance the next day. Thus, our results indicate that rTMS treatments accumulate over a day but not strongly over successive days. We suggest that rTMS of sensory cortex, as used in our study, affects short-term memory but not long-term memory formation.
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Affiliation(s)
- Hong Wang
- Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118 Magdeburg, Germany
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Hedges DW, Higginbotham BJ, Salyer DL, Lund TD. Transcranial magnetic stimulation effects on one-trial learning and response to anxiogenic stimuli in adult male rats. J ECT 2005; 21:25-30. [PMID: 15791174 DOI: 10.1097/01.yct.0000154051.73269.62] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Transcranial magnetic stimulation (TMS) is a relatively new technique for inducing small, localized, and reversible changes in living brain tissue and has been suggested to have antidepressant properties in humans and animal models of depression. Memory function generally has been found to be unaffected by TMS, although some studies have raised the possibility of memory interference from TMS. Additionally, there have been indirect indications that TMS may possess anxiolytic features. This study examines the effects of TMS in animal models of one-trial learning and anxiety. In this study, short-term treatment with TMS compared with identically handled animals not given TMS in adult rats resulted in no significant differences in memory as assessed both by a one-time learning paradigm and by components of an elevated-plus maze task, that TMS does not impair memory as assessed by these tasks. In addition, no changes were found in anxiety-like behavior on the elevated plus maze task. In summary, these findings support previous reports that TMS does not interfere with memory function. There was no evidence of an anxiolytic response from TMS in rats as assessed by the elevated plus maze test.
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Affiliation(s)
- Dawson W Hedges
- Department of Psychology and the Neuroscience Center, Brigham Young University, Provo, Utah, USA.
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Abstract
TMS is a non-invasive tool for measuring neural conduction and processing time, activation thresholds, facilitation and inhibition in brain cortex, and neural connections in humans. It is used to study motor, visual, somatosensory, and cognitive functions. TMS does not appear to cause long-term adverse neurological, cardiovascular, hormonal, motor, sensory, or cognitive effects in healthy subjects. Single-pulse (<1Hz) TMS is safe in normal subjects. High frequency, high-intensity repetitive TMS (rTMS) can elicit seizures even in normal subjects. Safety guidelines for using rTMS have been published.
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Affiliation(s)
- Sulekha Anand
- Department of Biological Sciences, San Jose State University, One Washington Square, San Jose, CA 95192-0100, USA.
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Hedges DW, Salyer DL, Higginbotham BJ, Lund TD, Hellewell JL, Ferguson D, Lephart ED. Transcranial magnetic stimulation (TMS) effects on testosterone, prolactin, and corticosterone in adult male rats. Biol Psychiatry 2002; 51:417-21. [PMID: 11904136 DOI: 10.1016/s0006-3223(01)01266-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Transcranial magnetic stimulation is a relatively new technique for inducing small, localized, and reversible changes in living brain tissue. Although transcranial magnetic stimulation generally results in no immediate changes in plasma corticosterone, prolactin, and testosterone, it normalizes the dexamethasone suppression test in some depressed subjects and has been shown to attenuate stress-induced increases in adrenocorticotropic hormone in rats. METHODS In this study, serum corticosterone and testosterone concentrations were assayed in male rats immediately and 3, 6, 9, 12, 24, and 48 hours following a single transcranial magnetic stimulation or sham application. Serum prolactin concentrations were determined immediately and 2 hours following a one-time application of either transcranial magnetic stimulation or sham. RESULTS Transcranial magnetic stimulation animals displayed significantly lower corticosterone concentrations at 6 and 24 hours following a single application compared with sham-control values. Transcranial magnetic stimulation also resulted in lower corticosterone concentrations numerically but not statistically in transcranial magnetic stimulation animals immediately after application (p =.089). No significant differences were found between groups for serum prolactin or testosterone levels at any given collection time point. CONCLUSIONS These findings 1) suggest that transcranial magnetic stimulation alters the hypothalamic-pituitary-adrenal stress axis and 2) provide time-course data for the implications of the hormonal mechanism that may be involved in the actions of transcranial magnetic stimulation.
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Affiliation(s)
- Dawson W Hedges
- Department of Psychology and the Neuroscience Center, Brigham Young University, Provo, Utah 84602, USA
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Collado-Corona MA, Mora-Magaña I, Cordero GL, Toral-Martiñón R, Shkurovich-Zaslavsky M, Ruiz-Garcia M, González-Astiazarán A. Transcranial magnetic stimulation and acoustic trauma or hearing loss in children. Neurol Res 2001; 23:343-6. [PMID: 11428513 DOI: 10.1179/016164101101198532] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Transcranial magnetic stimulation is a non-invasive method used to assess motor function in humans; however, some reports suggest it may cause internal ear damage (cochlear). Eighteen patients with normal auditory function (ages 2 months to 16 years, mean 6.8 years), two medical doctors and two technicians who performed the studies were tested with brain stem auditory evoked potentials, otoacoustic emissions, acoustic reflex and a pure tone audiometric and logoaudiometric test when possible, before and after transcranial magnetic stimulation for central motor conduction studies in different neurological conditions. All the tests were repeated two weeks and two months later. Patients had no auditory protection nor history of seizures. Motor evoked potentials and silent periods were recorded from the right abductor pollicis brevis and the first dorsal interosseous muscles at rest and during weak voluntary contraction when possible. A mean of 48 transcranial magnetic stimulations with 50%-75% Tesla intensity were used. Natural logarithmic transformation of latency and amplitude data had a normal distribution. There were no significant differences in auditory function testing.
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Affiliation(s)
- M A Collado-Corona
- Department of Clinical Neurophysiology and Research, Instituto Nacional de Pediatria and Instituto Nacional de la Comunicación Humana S.S., Mexico City, Mexico.
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Foerster A, Schmitz JM, Nouri S, Claus D. Safety of rapid-rate transcranial magnetic stimulation: heart rate and blood pressure changes. ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1997; 104:207-12. [PMID: 9186235 DOI: 10.1016/s0168-5597(97)00016-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We examined the influence of rapid-rate transcranial magnetic stimulation on heart rate and blood pressure in 13 healthy volunteers. In a first series three different cortical magnetic stimuli were applied: over C3, C4 and Fz (10/20 system), in a second series additionally over Pz. We also used a stimulus over the brachial plexus and a sham stimulus. Five stimuli of each location were applied with a Cadwell high speed magnetic stimulator using a focal point circular coil. Stimulus train duration was 500 ms, stimulus frequency 20 Hz. Stimulus strength was 70-90% of maximum stimulator output, 20% of maximum stimulator output above subjects' individual motor threshold. The subjects assessed stimulus inconvenience immediately after stimulation. ECG and blood pressure (Finapres) were recorded continuously during the 1 h test. In all subjects there was a clearly marked autonomic response with heart rate acceleration and decrease in blood pressure after all stimuli. There was no difference in responses between cortical stimuli. Blood pressure decrease after sham stimulation was significantly smaller than after cortical stimulation, it was more marked after brachial plexus stimulation. Autonomic reaction correlates well with subjective estimation of stimulus inconvenience. We conclude the observed effect of rapid-rate transcranial magnetic stimulation to be associated to rather an unspecific arousal reaction than to a direct stimulation of autonomic cortex areas. We did not observe any clinically relevant side-effects.
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Affiliation(s)
- A Foerster
- Department of Neurology, Friedrich-Alexander-Universität Erlangen, Germany
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Nezu A, Kimura S, Uehara S, Kobayashi T, Tanaka M, Saito K. Magnetic stimulation of motor cortex in children: maturity of corticospinal pathway and problem of clinical application. Brain Dev 1997; 19:176-80. [PMID: 9134188 DOI: 10.1016/s0387-7604(96)00552-9] [Citation(s) in RCA: 130] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The developmental profile of the electromyographic responses to transcranial magnetic stimulation (TMS) was studied in 46 neurologically normal children aged from one to 14 years, compared with data in 10 normal control adults. To obtain motor evoked potentials (MEPs) from the first dorsal interosseous muscle in the resting state, the motor cortex was stimulated through a circular coil with the stimulus intensity set at 10% above the threshold intensity for eliciting MEPs. Reproducible MEPs were obtained in all but the children aged below 2 years, and the threshold intensity and central motor conduction time (CMCT) showed a linear decrease with maturation. The MEP amplitude changed little until 9 years of age, but it tended to increase between 10 years and adulthood. The MEP duration, which was not influenced by age, was less than 16 ms over the ages studied. The present data suggest that maturity of the corticospinal motor pathway that controls the intrinsic hand muscles is electrophysiologically complete at 13 years of age. Among the parameters of MEPs, CMCT and MEP duration may be useful for evaluating impairment of the corticospinal tracts in children aged 2 years and older.
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Affiliation(s)
- A Nezu
- Department of Pediatrics, Urafune Hospital, Yokohama City University, Japan
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