Meadmore Katie L, Exell Timothy A, Burridge Jane H, Hughes Ann-Marie, Freeman Christopher T, Benson Valerie
a Psychology, Faculty of Social, Human and Mathematical Sciences , University of Southampton , Southampton , UK.
b Centre for Innovation and Leadership in Health Sciences, Faculty of Health Sciences , University of Southampton , Southampton , UK.
Disabil Rehabil. 2018 Oct;40(20):2424-2432. doi: 10.1080/09638288.2017.1336649. Epub 2017 Jun 9.
To enhance understanding of the relationship between upper limb and eye movements during reaching tasks in people with stroke.
Eye movements were recorded from 10 control participants and 8 chronic stroke participants during a visual orienting task (Experiment 1) and a series of reaching tasks (Experiment 2). Stroke participants completed the reaching tasks using (i) their less impaired upper limb, (ii) their more impaired upper limb without support, and (iii) their more impaired upper limb, with support (SaeboMAS gravitational support and/or electrical stimulation). Participants were tested individually and completed both experiments in the same session.
Oculomotor control and the coordination between the upper limb and the oculomotor system were found to be intact in stroke participants when no limb movements were required, or when the less impaired upper limb was used. However, when the more impaired upper limb was used, success and accuracy in reaching decreased and patterns of eye movements changed, with an observed increase in eye movements to the limb itself. With upper limb support, patterns of hand-eye coordination were found to more closely resemble those of the control group.
Deficits in upper limb motor systems result in changes in patterns of eye movement behavior during reaching tasks. These changes in eye movement behavior can be modulated by providing upper limb support. Implications for Rehabilitation Deficits in upper limb motor systems can result in changes in patterns of eye movement behavior during reaching tasks. Upper limb support can reduce deficits in hand-eye coordination. Stroke rehabilitation outcomes should consider motor and oculomotor performance.
增强对中风患者在伸手够物任务中上肢与眼球运动之间关系的理解。
在视觉定向任务（实验1）和一系列伸手够物任务（实验2）中，记录了10名对照参与者和8名慢性中风参与者的眼球运动。中风参与者使用以下方式完成伸手够物任务：（i）他们受损较轻的上肢；（ii）他们受损较重且无支撑的上肢；（iii）他们受损较重且有支撑（SaeboMAS重力支撑和/或电刺激）的上肢。参与者单独接受测试，并在同一会话中完成两个实验。
发现在不需要肢体运动时，或者使用受损较轻的上肢时，中风参与者的眼球运动控制以及上肢与眼球运动系统之间的协调性是完好的。然而，当使用受损较重的上肢时，伸手够物的成功率和准确性下降，眼球运动模式发生改变，观察到向肢体本身的眼球运动增加。使用上肢支撑时，手眼协调模式被发现更接近于对照组。
上肢运动系统的缺陷导致伸手够物任务期间眼球运动行为模式的改变。这些眼球运动行为的改变可以通过提供上肢支撑来调节。对康复的意义上肢运动系统的缺陷可导致伸手够物任务期间眼球运动行为模式的改变。上肢支撑可减少手眼协调方面的缺陷。中风康复结果应考虑运动和眼球运动表现。
