Saarland University, Germany; Texas A&M University, USA.
Saarland University, Germany.
Hum Mov Sci. 2024 Apr;94:103195. doi: 10.1016/j.humov.2024.103195. Epub 2024 Feb 14.
Across-task binding is defined as the stimulus/response of one task being linked to the response of another task. The purpose of the present experiment was to determine across-task binding in a continuous movement sequence task with an auditory task of high and low pitch tones and the development of a movement sequence representation. According to the two systems theory of sequence learning, we expected that the developed representation in the across-task binding context relies on the multi-dimensional system rather than on the unidimensional system which is restricted to a set of modules where each module processed information along one task/dimension. An inter-manual transfer design was used to disentangle the sequence representations. The mirror transfer test required the same pattern of muscle activation and joint angles (motor coordinates) in the contralateral limb as experienced during the acquisition phase, while in the non-mirror transfer test, the visual-spatial locations (spatial coordinates) of the target waveform were reinstated. The main finding was that consistently combining visual-spatial positions in a sequence and auditory dimensions such as the tone pitch does not rely on a multidimensional system as predicted by the two-systems theory.
跨任务绑定被定义为一个任务的刺激/反应与另一个任务的反应之间的联系。本实验的目的是确定在一个具有高、低音调听觉任务的连续运动序列任务中是否存在跨任务绑定，并发展一种运动序列表示。根据序列学习的双系统理论，我们预计在跨任务绑定的背景下发展起来的表示依赖于多维系统，而不是一维系统，一维系统仅限于一组模块，每个模块沿着一个任务/维度处理信息。采用手动交叉转移设计来区分序列表示。镜像转移测试要求对侧肢体的肌肉激活和关节角度（运动坐标）与习得阶段相同，而在非镜像转移测试中，目标波形的视觉空间位置（空间坐标）被恢复。主要发现是，如双系统理论所预测的那样，在一个序列中始终将视觉空间位置与听觉维度（如音调）结合起来，并不依赖于多维系统。
