Motor plasticity induced by synchronized thumb and foot movements

We used focal transcranial magnetic stimulation to examine the effects of 120 synchronized thumb and foot movements on the motor output map of the right abductor pollicis brevis muscle (APB) (experiment 1). To evaluate the performance, the latencies between the onset of the electromyographic activit...

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Bibliographic Details
Published in:Experimental brain research 1999-04, Vol.125 (4), p.435-439
Main Authors: LIEPERT, J, TERBORG, C, WEILLER, C
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Electromagnetic Fields
Electromyography
Female
Foot - physiology
Fundamental and applied biological sciences. Psychology
Gravity Sensing
Humans
Male
Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration
Motor Cortex - physiology
Movement - physiology
Muscle, Skeletal - physiology
Neuronal Plasticity - physiology
Physical Stimulation
Psychomotor Performance - physiology
Sensory Thresholds
Space life sciences
Thumb - physiology
Vertebrates: nervous system and sense organs
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Summary:We used focal transcranial magnetic stimulation to examine the effects of 120 synchronized thumb and foot movements on the motor output map of the right abductor pollicis brevis muscle (APB) (experiment 1). To evaluate the performance, the latencies between the onset of the electromyographic activity (EMG) of the two muscles were measured. As control, 120 asynchronous thumb and foot movements were performed (experiment 2). Exclusively in experiment 1, the center of gravity (CoG) of the output map moved medially in the direction of the foot representation area (mean 7 mm, P
ISSN:0014-4819
1432-1106
DOI:10.1007/s002210050700