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Neural basis of implicit motor sequence learning: Modulation of cortical power
journal contribution
posted on 2023-02-10, 05:07 authored by Jarrad LumJarrad Lum, Gillian ClarkGillian Clark, Pam BarhounPam Barhoun, Aron HillAron Hill, Christian HydeChristian Hyde, PH WilsonImplicit sequence learning describes the acquisition of serially ordered movements and sequentially structured cognitive information, that occurs without awareness. Theta, alpha and beta cortical oscillations are present during implicit motor sequence learning, but their role in this process is unclear. The current study addressed this gap in the literature. A total of 50 healthy adults aged between 19 and 37 years participated in the study. Implicit motor sequence learning was examined using the Serial Reaction Time task where participants unknowingly repeat a sequence of finger movements in response to a visual stimulus. Sequence learning was examined by comparing reaction times and oscillatory power between sequence trials and a set of control trials comprising random stimulus presentations. Electroencephalography was recorded as participants completed the task. Analyses of the behavioral data revealed participants learnt the sequence. Analyses of oscillatory activity, using permutation testing, revealed sequence learning was associated with a decrease in theta band (4–7 Hz) power recorded over frontal and central electrode sites. Sequence learning effects were not observed in the alpha (7–12 Hz) or beta bands (12–20 Hz). Even though alpha and beta power modulations have long been associated with executing a motor response, it seems theta power is a correlate of sequence learning in the manual domain. Theta power modulations on the serial reaction time task may reflect disengagement of attentional resources, either promoting or occurring as a consequence of implicit motor sequence learning.
History
Journal
PsychophysiologyVolume
60Article number
ARTN e14179Location
United StatesPublisher DOI
ISSN
0048-5772eISSN
1469-8986Language
EnglishPublication classification
C1 Refereed article in a scholarly journalIssue
2Publisher
WILEYUsage metrics
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Social SciencesScience & TechnologyLife Sciences & BiomedicinePsychology, BiologicalNeurosciencesPhysiologyPsychologyPsychology, ExperimentalNeurosciences & Neurologyalphabetaelectroencephalography (EEG)implicit motor sequence learningneural oscillationsserial reaction time (SRT) taskthetaREACTION-TIME-TASKTHETA-OSCILLATIONSPREFRONTAL CORTEXSPECTRAL DYNAMICSWORKING-MEMORYALPHA-GAMMAEEGFREQUENCYLANGUAGEEXPLICITAdultHumansYoung AdultReaction TimeElectroencephalographyLearningNeurodegenerativeMental HealthClinical ResearchBrain DisordersBasic Behavioral and Social ScienceBehavioral and Social ScienceMental healthNeurologicalBiological SciencesMedical and Health SciencesPsychology and Cognitive Sciences
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