Tibialis anterior stretch reflex in early stance is suppressed by repetitive transcranial magnetic stimulation
作者： Abraham T. Zuur , Mark S. Christensen , Thomas Sinkjaer , Michael J. Grey , Jens Bo Nielsen
DOI: 10.1113/JPHYSIOL.2009.169367
关键词:
摘要: A rapid plantar flexion perturbation in the early stance phase of walking elicits a large stretch reflex tibialis anterior (TA). In this study we use repetitive transcranial magnetic stimulation (rTMS) to test if response is mediated through transcortical pathway. TA reflexes were elicited step cycle during treadmill walking. Twenty minutes 1 Hz rTMS at 115% resting motor threshold (MT(r)) significantly decreased (P < 0.05) magnitude later component latency approximately 100 ms up 25 min after rTMS. Control experiments which sitting showed no effect on spinally short and medium (SLR MLR) while long (LLR) motor-evoked potential (MEP) significant decrease 10 MT(r) This demonstrates that applied leg area cortex can suppress These results are line with hypothesis by An alternative explanation for observed subcortical structures affected also shows may be used neural control
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