Voluntary motor reactions: does stimulus appearance prolong the actual tremor period?

摘要

Entrainment of voluntary motor responses by ongoing tremors demonstrates the interaction of motor actions simultaneously performed by the same muscle. In the case of physiological tremor, based on experimental data, Kogan (Determining the influence of a bright stimulus on the ultramicrostructure of the movement control process in highly qualified wrestlers, Tesisi 7, Nautschnometoditscheskoi konferenzii respublik Pribaltiki i Belorussi po woprosam sportivnoi trenirovki, Riga, 1978:56-57) postulated a direct and immediate impact of a 'go' stimulus on the actual tremor cycle. This paper represents a critical replication of this investigation, showing that the effect reported can be simply explained as an inherent statistical consequence of the experimental paradigm.