Timing continuous or discontinuous movements across effectors specified by different pacing modalities and intervals
Timing continuous or discontinuous movements across effectors specified by different pacing modalities and intervals
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DOI：
10.1007/s00221-012-3142-4
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发表时间：
2012-08-01
影响因子：
2
通讯作者：
Stensdotter, A. K.
中科院分区：
文献类型：
--
作者：
Loras, H.;Sigmundsson, H.;Stensdotter, A. K.
感觉运动同步被认为是通过两个不同的过程产生的，与连续或不连续的节奏运动有关。本研究考察了连续和不连续运动对不同起搏信号（听觉或视觉）、起搏间隔（500、650、800、950 ms）和跨效应器（非优势手和非优势手）的同步性。结果表明，与连续运动相比，不连续运动的平均误差和变异性始终较小。此外，与视觉节奏相比，听觉节奏对两种运动类型的计时更准确，而优势手的计时更准确。缩短起搏间隔也提高了连续和不连续运动的感觉运动同步精度。这些结果表明，运动的时间控制依赖于运动任务的性质、外在感觉信息的类型和速率以及运动执行器的感觉整合效率。
Sensorimotor synchronization is hypothesized to arise through two different processes, associated with continuous or discontinuous rhythmic movements. This study investigated synchronization of continuous and discontinuous movements to different pacing signals (auditory or visual), pacing interval (500, 650, 800, 950 ms) and across effectors (non-dominant vs. non-dominant hand). The results showed that mean and variability of asynchronization errors were consistently smaller for discontinuous movements compared to continuous movements. Furthermore, both movement types were timed more accurately with auditory pacing compared to visual pacing and were more accurate with the dominant hand. Shortening the pacing interval also improved sensorimotor synchronization accuracy in both continuous and discontinuous movements. These results show the dependency of temporal control of movements on the nature of the motor task, the type and rate of extrinsic sensory information as well as the efficiency of the motor actuators for sensory integration.