Abstract

The present study investigated whether the duration of the first tapping bout, which could also be considered ‘the priming’, would play a role for the occurrence of the behavioral phenomenon termed repeated bout rate enhancement. Eighty-eight healthy individuals were recruited. Sixty-three of these demonstrated repeated bout rate enhancement and they were assigned to two different groups, which performed either active or passive tapping as priming. The durations of the first tapping bouts, which acted as priming, were 20, 60, 120, and 180 s. Following the first bout there was a 10 min rest and a subsequent 180 s tapping bout performed at freely chosen tapping rate. Vertical displacement and tapping force data were recorded. Rate enhancement was elicited independently of the duration of the first bout in both groups. Rate enhancement occurred without concurrent changes of the magnitude of vertical displacement, time to peak force, and duration of finger contact phase. The peak force was reduced when 180 s of tapping had been performed as priming. The increased tapping rate following priming by as little as 20 s active or passive tapping, as observed here, is suggested to be a result of increased net excitability of the nervous system.

摘要

本研究调查了第一次攻丝的持续时间，也可以被认为是“启动”，是否会对称为重复发作率增强的行为现象的发生起作用。招募了八十八名健康个体。其中 63 人表现出重复的发作率提高，他们被分配到两个不同的组，分别进行主动或被动敲击作为启动。作为启动的第一次敲击的持续时间为 20、60、120 和 180 秒。在第一场比赛后休息 10 分钟，随后以自由选择的敲击速度进行 180 秒的敲击比赛。记录垂直位移和敲击力数据。两组中第一次发作的持续时间无关地引起速率增强。发生速率增强时，垂直位移的幅度、达到峰值力的时间和手指接触阶段的持续时间没有同时发生变化。当敲击 180 秒作为启动时，峰值力会降低。正如此处所观察到的，在启动后仅 20 s 主动或被动敲击就会增加敲击率，这被认为是神经系统净兴奋性增加的结果。