研究棱镜适应后的前运动伸手偏差。

IF 1.7 3区 心理学 Q4 NEUROSCIENCES
Neuropsychological Rehabilitation Pub Date : 2024-07-01 Epub Date: 2023-08-20 DOI:10.1080/09602011.2023.2247153
Jasmine R Aziz, Gail A Eskes
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引用次数: 0

摘要

棱镜适应(PA)既是一项视觉运动学习任务,也是治疗中风后空间忽略的潜在方法。虽然 PA 的后效应可以改善忽视症状,但治疗效果因人而异,这可能是由于忽视亚型的差异造成的。忽视症状可以沿着信息加工路径进行描述,产生知觉(输入)和前运动(输出)忽视亚型。有证据表明,PA 主要有利于前运动性忽视患者。我们通过研究 PA 是否会诱发健康成年人的前运动偏差,来探讨 PA 是否会调节信息处理的前运动阶段。我们使用了一种加速伸手任务来测量知觉偏差和前运动偏差,该任务比较了从不同的手开始位置向左和向右伸手到侧向目标的启动时间。采用随机混合实验设计,30 名右手健康的成年人在左移(n = 15)或右移(n = 15)PA 之前和之后完成了这项加速到达任务。正如假设的那样,无论目标位置如何,左移 PA 都加快了向右伸手的启动时间(p = .02, ηp2 = .18),这表明 PA 诱导了棱镜后效方向的前运动偏差。这些发现对PA的潜在机制有一定的影响,可以为视觉运动学习理论和PA作为空间忽视的治疗方法提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigating premotor reaching biases after prism adaptation.

Prism adaptation (PA) is both a visuomotor learning task and potential treatment for spatial neglect after stroke. While PA's aftereffects can improve neglect symptoms, therapeutic benefits vary across individuals, possibly due to differences in neglect subtypes. Neglect symptoms can be described along an information processing pathway, yielding perceptual (input) and premotor (output) neglect subtypes. There is some evidence that PA mainly benefits persons with premotor neglect. We investigated whether PA modulates the premotor stage of information processing by examining whether PA could induce a premotor bias in healthy adults. We measured perceptual and premotor biases using a speeded reach task that compares the initiation time of leftward and rightward reaches to lateralized targets from different hand start positions. Using a randomized mixed experimental design, 30 right-handed healthy adults completed this speeded reach task before and after either left-shifting (n = 15) or right-shifting (n = 15) PA. As hypothesized, left-shifting PA speeded initiation time specifically for reaches in the rightward direction, regardless of target location (p = .02, ηp2 = .18), suggesting that PA induced a premotor bias in the direction of the prism aftereffect. These findings have implications for PA's underlying mechanisms, which can inform visuomotor learning theories and PA's use as a treatment for spatial neglect.

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来源期刊
Neuropsychological Rehabilitation
Neuropsychological Rehabilitation 医学-神经科学
CiteScore
6.30
自引率
7.40%
发文量
78
审稿时长
>12 weeks
期刊介绍: Neuropsychological Rehabilitation publishes human experimental and clinical research related to rehabilitation, recovery of function, and brain plasticity. The journal is aimed at clinicians who wish to inform their practice in the light of the latest scientific research; at researchers in neurorehabilitation; and finally at researchers in cognitive neuroscience and related fields interested in the mechanisms of recovery and rehabilitation. Papers on neuropsychological assessment will be considered, and special topic reviews (2500-5000 words) addressing specific key questions in rehabilitation, recovery and brain plasticity will also be welcomed. The latter will enter a fast-track refereeing process.
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