Human rhythm perception and sensorimotor synchronization are both constrained by temporal thresholds on several levels. The lower limit for durations that allow for entrainment at the level of metric beat subdivision has been estimated at about 100–120 ms (London, 2002; Repp, 2003). Tempos and subdivision durations reported for American jazz and East African xylophone music performance, however, suggest that the perception of shorter subdivisions within a range of 80–100 ms may well be possible. This paper musicologically analyzes and empirically measures the fastest metric subdivisions in two sets of live recordings of vernacular dance music from West Africa. In two recordings of Ewe drumming from Ghana, subdivision durations display mean values within a range of 90–100 ms for extended periods of time. Four recordings of jembe drumming from Mali feature subdivision IOIs of about 80–90 ms during their final and fastest sections. A lower limit for metric subdivision durations is hypothesized to perceptually constrain West African drumming within a threshold range of about 80–100 ms.

中文翻译：

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西非舞蹈鼓的米数下限

人的节奏感知和感觉运动同步都受到几个级别上的时间阈值的限制。允许在节拍节拍细分级别进行训练的持续时间的下限估计为大约100-120 ms（伦敦，2002； Repp，2003）。据报道，美国爵士乐和东非木琴音乐演奏的节奏和细分时长表明，在80-100 ms范围内较短细分的感知是很有可能的。本文对两组来自西非的民族舞蹈音乐的现场录音进行了音乐学上的分析和实证测量，以最快的度量单位进行了细分。在来自加纳的两次母羊鼓击录音中，细分持续时间显示了较长时间段内90–100 ms范围内的平均值。来自马里的四首jembe鼓的录音在其最后和最快的部分具有约80–90 ms的细分IOI。假设度量细分持续时间的下限可感知地将西非击鼓限制在约80-100 ms的阈值范围内。