Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Momentary reward induce changes in excitability of primary motor cortex
Clinical Neurophysiology, Volume 122, No. 9, Year 2011
Notification
URL copied to clipboard!
Description
ObjectiveTo investigate the human primary motor cortex (M1) excitability changes induced by momentary reward. MethodsTo test the changes in excitatory and inhibitory functions of M1, motor-evoked potentials (MEPs), short-interval intracortical inhibition (SICI) and short-latency afferent inhibition (SAI) were tested in the abductor pollicis brevis (APB) muscle of non-dominant hand in 14 healthy volunteers by transcranial magnetic stimulation (TMS) during a behavioral task in which subjects were pseudorandomly received either reward target or non-target stimuli in response to a cue. To control sensorimotor and attention effects, a sensorimotor control task was done replacing the reward target with non-reward target. ResultsThe SICI was increased, and the SAI was decreased significantly during the presentation of the reward target stimuli. Those changes were not evident during non-reward target stimuli in the sensorimotor control task, indicating that this change is specific to momentary reward. ConclusionsMomentary rewarding is associated with change in intracortical inhibitory circuits of M1. Significance: TMS may be a useful probe to study the reward system in health and in many diseases in which its dysfunction is suspected. © 2011 International Federation of Clinical Neurophysiology.
Authors & Co-Authors
Thabit, Mohamed Nasreldin
Japan, Kyoto
Graduate School of Medicine
Egypt, Sohag
Faculty of Medicine
Nakatsuka, Masahiro
Japan, Kyoto
Graduate School of Medicine
Koganemaru, Satoko
Japan, Kyoto
Graduate School of Medicine
Fawi, Gharib
Egypt, Sohag
Faculty of Medicine
Fukuyama, Hironori
Japan, Kyoto
Graduate School of Medicine
Mima, Tatsuya
Japan, Kyoto
Graduate School of Medicine
Statistics
Citations: 55
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1016/j.clinph.2011.02.021
ISSN:
13882457
e-ISSN:
18728952