Abstract
Voluntary muscle relaxation is an "active process" requiring cortical activation. However, cortical activation during motor imagery of muscle relaxation has not been well understood. The purpose of this study was to clarify time-dependent changes in corticospinal excitability during the imagery of muscle relaxation. Ten participants imagined volitional muscle relaxation from an imagined pinching with their right index finger and thumb in response to an auditory cue. Transcranial magnetic stimulation was applied at the left primary motor area of the first dorsal interosseous (FDI) muscle at different time intervals after the auditory cue. Motor evoked potentials (MEPs) were recorded from the right hand and forearm muscles. The MEP amplitudes of the FDI and the synergist temporally decreased after the auditory cue as compared with those present in the resting condition. Our finding indicates that motor imagery of muscle relaxation induces a temporal reduction of the corticospinal excitability related to the targeted muscle.
| Original language | English |
|---|---|
| Pages (from-to) | 39-45 |
| Number of pages | 7 |
| Journal | Neuroscience Research |
| Volume | 92 |
| DOIs | |
| Publication status | Published - 2015 Mar 1 |
Fingerprint
Keywords
- Inhibition
- MEP
- Motor imagery
- Relaxation
- TMS
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Motor imagery of voluntary muscle relaxation induces temporal reduction of corticospinal excitability. / Kato, Koki; Watanabe, Jun; Muraoka, Tetsuro; Kanosue, Kazuyuki.
In: Neuroscience Research, Vol. 92, 01.03.2015, p. 39-45.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Motor imagery of voluntary muscle relaxation induces temporal reduction of corticospinal excitability
AU - Kato, Koki
AU - Watanabe, Jun
AU - Muraoka, Tetsuro
AU - Kanosue, Kazuyuki
PY - 2015/3/1
Y1 - 2015/3/1
N2 - Voluntary muscle relaxation is an "active process" requiring cortical activation. However, cortical activation during motor imagery of muscle relaxation has not been well understood. The purpose of this study was to clarify time-dependent changes in corticospinal excitability during the imagery of muscle relaxation. Ten participants imagined volitional muscle relaxation from an imagined pinching with their right index finger and thumb in response to an auditory cue. Transcranial magnetic stimulation was applied at the left primary motor area of the first dorsal interosseous (FDI) muscle at different time intervals after the auditory cue. Motor evoked potentials (MEPs) were recorded from the right hand and forearm muscles. The MEP amplitudes of the FDI and the synergist temporally decreased after the auditory cue as compared with those present in the resting condition. Our finding indicates that motor imagery of muscle relaxation induces a temporal reduction of the corticospinal excitability related to the targeted muscle.
AB - Voluntary muscle relaxation is an "active process" requiring cortical activation. However, cortical activation during motor imagery of muscle relaxation has not been well understood. The purpose of this study was to clarify time-dependent changes in corticospinal excitability during the imagery of muscle relaxation. Ten participants imagined volitional muscle relaxation from an imagined pinching with their right index finger and thumb in response to an auditory cue. Transcranial magnetic stimulation was applied at the left primary motor area of the first dorsal interosseous (FDI) muscle at different time intervals after the auditory cue. Motor evoked potentials (MEPs) were recorded from the right hand and forearm muscles. The MEP amplitudes of the FDI and the synergist temporally decreased after the auditory cue as compared with those present in the resting condition. Our finding indicates that motor imagery of muscle relaxation induces a temporal reduction of the corticospinal excitability related to the targeted muscle.
KW - Inhibition
KW - MEP
KW - Motor imagery
KW - Relaxation
KW - TMS
UR - http://www.scopus.com/inward/record.url?scp=84923599781&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84923599781&partnerID=8YFLogxK
U2 - 10.1016/j.neures.2014.10.013
DO - 10.1016/j.neures.2014.10.013
M3 - Article
C2 - 25448688
AN - SCOPUS:84923599781
VL - 92
SP - 39
EP - 45
JO - Neuroscience Research
JF - Neuroscience Research
SN - 0168-0102
ER -