Variation in Performance Strategies of a Hand Mental Rotation Task on Elderly
Variation in Performance Strategies of a Hand Mental Rotation Task on Elderly
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DOI：
10.3389/fnhum.2019.00252
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发表时间：
2019-07-19
影响因子：
2.9
通讯作者：
Mochizuki, Hideki
中科院分区：
文献类型：
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作者：
Nagashima, Izumi;Takeda, Kotaro;Mochizuki, Hideki
手心理旋转任务（HMRT）是其中人判断旋转的手的图像是右手还是左手的任务。两个性能策略，预计将发挥作用时，执行这些任务：视觉意象（VI）的战略，其中一个图像是精神上旋转，和运动想象（MI）的战略，其中一个人自己的手的运动是模拟的。虽然老年人通常需要一些时间来完成这些任务，但个人之间的能力差异很大。本研究假设任务执行策略的差异与执行能力之间存在关系，并将老年人分为心理旋转时间短和心理旋转时间长的两组，比较其任务执行策略的差异。在对手掌图像的反应中，两组都表现出了内外侧效应，其中第三根手指向身体中线旋转的图像比向相反方向旋转的图像反应更快，我们推断主要采用了MI策略。同时，在手背的图像，内侧-外侧效应也观察到在组与长的心理旋转时间，而不是在组与最短的心理旋转时间（VI策略）。这些结果表明，心理旋转时间短的老年人和心理旋转时间长的老年人在执行HMRT任务时使用不同的策略。
A hand mental rotation task (HMRT) is a task wherein a person judges whether an image of a rotated hand is of the right or left hand. Two performance strategies are expected to come into play when performing these tasks: a visual imagery (VI) strategy, in which an image is mentally rotated, and a motor imagery (MI) strategy, in which the movement of a person's own hand is simulated. Although elderly people generally take some time to perform these tasks, ability differs greatly between individuals. The present study hypothesizes that there is a relationship between differences in task performance strategy and performance ability, and it compares performance strategy among elderly people divided into groups with a short mental rotation time and a long mental rotation time. In response to images of the palm, both groups displayed a medial-lateral effect in which responses were faster for images where the third finger was rotated toward the midline of the body than images rotated in the opposite direction, and we inferred that an MI strategy was primarily employed. Meanwhile, in response to images of the back of the hand, a medial-lateral effect was also observed in the group with a long mental rotation time and not in the group with the shortest mental rotation time (VI strategy). These results suggest that different strategies for performing HMRT task are used by elderly people with a short mental rotation time and those with a long mental rotation time.