Short-lasting impairment of tactile perception by 0.9Hz-rTMS of the sensorimotor cortex.
To test whether low-frequency repetitive transcranial magnetic stimulation (rTMS) of sensorimotor cortex (SM1) has prolonged effects on somatosensory function, eight subjects were given 900 TMS pulses over the left hand SM1 (0.9Hz, 90% of the resting motor threshold) or at sites 3 cm anterior or posterior to it. Tactile threshold of the right hand was increased for a short duration after rTMS over SM1, but two-point discrimination and median nerve SEPs were unaffected after rTMS at any sites.
Satow
T
T
Human Brain Research Center, Kyoto University Graduate School of Medicine, Sakyo, Kyoto, Japan.
Mima
T
T
Yamamoto
J
J
Oga
T
T
Begum
T
T
Aso
T
T
Hashimoto
N
N
Rothwell
J C
JC
Shibasaki
H
H
D000328:Adult; D000377:Agnosia / Q000209:etiology* / Q000503:physiopathology; D004192:Discrimination, Psychological; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006801:Humans; D008280:Magnetics; D008297:Male; D009044:Motor Cortex / Q000502:physiology*; D013003:Somatosensory Cortex / Q000502:physiology*; D013997:Time Factors; D014110:Touch / Q000502:physiology*