Parkkonen , E , Laaksonen , K , Piitulainen , H , Parkkonen , L & Forss , N 2015 , ' Modulation of the similar to 20-Hz motor-cortex rhythm to passive movement and tactile stimulation ' , Brain and Behavior , vol. 5 , no. 5 , 00328 . https://doi.org/10.1002/brb3.328
Title: | Modulation of the similar to 20-Hz motor-cortex rhythm to passive movement and tactile stimulation |
Author: | Parkkonen, Eeva; Laaksonen, Kristina; Piitulainen, Harri; Parkkonen, Lauri; Forss, Nina |
Contributor organization: | Neurologian yksikkö Department of Neurosciences Clinicum |
Date: | 2015-05 |
Language: | eng |
Number of pages: | 11 |
Belongs to series: | Brain and Behavior |
ISSN: | 2162-3279 |
DOI: | https://doi.org/10.1002/brb3.328 |
URI: | http://hdl.handle.net/10138/166370 |
Abstract: | Background: Integration of afferent somatosensory input with motor-cortex output is essential for accurate movements. Prior studies have shown that tactile input modulates motor-cortex excitability, which is reflected in the reactivity of the similar to 20-Hz motor-cortex rhythm. similar to 20-Hz rebound is connected to inhibition or deactivation of motor cortex whereas suppression has been associated with increased motor cortex activity. Although tactile sense carries important information for controlling voluntary actions, proprioception likely provides the most essential feedback for motor control. Methods: To clarify how passive movement modulates motor-cortex excitability, we studied with magnetoencephalography (MEG) the amplitudes and peak latencies of suppression and rebound of the similar to 20-Hz rhythm elicited by tactile stimulation and passive movement of right and left index fingers in 22 healthy volunteers. Results: Passive movement elicited a stronger and more robust similar to 20-Hz rebound than tactile stimulation. In contrast, the suppression amplitudes did not differ between the two stimulus types. Conclusion: Our findings suggest that suppression and rebound represent activity of two functionally distinct neuronal populations. The similar to 20-Hz rebound to passive movement could be a suitable tool to study the functional state of the motor cortex both in healthy subjects and in patients with motor disorders. |
Subject: |
Beta rebound
beta rhythm magnetoencephalography motor-cortex excitability proprioception sensorimotor integration EVENT-RELATED DESYNCHRONIZATION SIGNAL SPACE SEPARATION TRANSCRANIAL MAGNETIC STIMULATION PROGRESSIVE MYOCLONUS EPILEPSY 2ND SOMATOSENSORY CORTEX UNVERRICHT-LUNDBORG TYPE PACED FINGER MOVEMENTS CENTRAL BETA-RHYTHMS CORTICAL RHYTHMS ELECTROPHYSIOLOGICAL CORRELATE 3124 Neurology and psychiatry |
Peer reviewed: | Yes |
Rights: | cc_by |
Usage restriction: | openAccess |
Self-archived version: | publishedVersion |
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