THE INFLUENCE OF AGE ON MANUAL ASYMMETRIES IN MOVEMENT PREPARATION AND EXECUTION
THE INFLUENCE OF AGE ON MANUAL ASYMMETRIES IN MOVEMENT PREPARATION AND EXECUTION
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DOI：
10.1080/87565649509540608
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发表时间：
1995-01-01
影响因子：
1.5
通讯作者：
CARNAHAN, H
中科院分区：
文献类型：
--
作者：
CHUA, R;POLLOCK, BJ;CARNAHAN, H
通过实验研究了年龄对动作准备和执行过程中手部不对称表达的影响，并对脑半球差异老化假说的意义进行了探讨。青年、中年和老年受试者在预先的范式下执行一个简单的指向任务（Rosenbaum, 1980）。虽然老年受试者在开始和完成动作时比年轻受试者慢，但他们在动作执行速度和准备速度上表现出与年轻受试者相同的左手优势。这些结果表明，老年受试者表现出与年轻受试者相同的手部不对称模式。此外，老年受试者在运动准备方面比年轻受试者表现出更明显的左手优势。这一发现与右半球视觉空间功能随着年龄的增长而迅速退化的观点不一致。
An experiment was conducted to examine the influence of age on the expression of manual asymmetries in movement preparation and execution and the implication toward the hypothesis of differential hemispheric aging. Young, middle age, and elderly subjects performed a simple pointing task under a precuing paradigm (Rosenbaum, 1980). Although elderly subjects were slower in initiating and completing their movements compared to younger subjects, they demonstrated the same right-hand advantage for the speed of movement execution and exhibited the same left-hand advantage for speed of preparation as the younger subjects. These results indicate that elderly subjects exhibit the same pattern of manual asymmetry as younger subjects. Futhermore, elderly subjects exhibited a more pronounced left-hand advantage than younger subjects for movement preparation. This finding is not consistent with the idea that right-hemisphere visuospatial function deteriorates more rapidly with age.