Laboratório de Cognição Motora, Universidade Federal do Pará, Belém, Brazil.
Laboratório de Anatomia Humana Funcional, Universidade Federal do Pará, Belém, Brazil.
Neurocase. 2021 Apr;27(2):169-177. doi: 10.1080/13554794.2021.1905853. Epub 2021 Mar 29.
The present study aims at the cerebellum's role in prediction mechanisms triggered by action observation. Five cerebellar patients and six age-paired control subjects were asked to estimate the occluded end point position of the shoulder's trajectories in Sit-to-Stand (STS) or Back-to-Sit (BTS) conditions, following or not biological rules. Contrarily to the control group, the prediction accuracy of the end point position in cerebellar patients did not depend on biological rules. Interestingly, both groups presented similar results when estimating the vanishing position of the target. Taken together, these results suggest that cerebellar damage affectsthe capacity of predicting upcoming actions by observation.
本研究旨在探讨小脑在动作观察引发的预测机制中的作用。要求五名小脑患者和六名年龄匹配的对照组在遵循或不遵循生物规则的情况下，估计肩部轨迹在坐站（STS）或背坐（BTS）条件下的遮挡端点位置。与对照组不同的是，小脑患者对端点位置的预测准确性不依赖于生物规则。有趣的是，当估计目标的消失位置时，两组都得到了相似的结果。总之，这些结果表明小脑损伤会影响通过观察预测即将发生的动作的能力。
