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Decoding of standard and non-standard visuomotor associations from parietal cortex.
Journal of Neural Engineering ( IF 4 ) Pub Date : 2020-08-13 , DOI: 10.1088/1741-2552/aba87e
M Filippini 1 , A P Morris , R Breveglieri , K Hadjidimitrakis , P Fattori
Affiliation  

Objective. Neural signals can be decoded and used to move neural prostheses with the purpose of restoring motor function in patients with mobility impairments. Such patients typically have intact eye movement control and visual function, suggesting that cortical visuospatial signals could be used to guide external devices. Neurons in parietal cortex mediate sensory-motor transformations, encode the spatial coordinates for reaching goals, hand position and movements, and other spatial variables. We studied how spatial information is represented at the population level, and the possibility to decode not only the position of visual targets and the plans to reach them, but also conditional, non-spatial motor responses. Approach. The animals first fixated one of nine targets in 3D space and then, after the target changed color, either reached toward it, or performed a non-spatial motor response (lift hand from a button). Spiking activity of parietal neurons was recorde...

中文翻译:

从顶叶皮层解码标准和非标准视觉运动关联。

目的。神经信号可被解码并用于移动神经假体,以恢复行动不便患者的运动功能。这类患者通常具有完整的眼球运动控制和视觉功能,表明皮质视觉空间信号可用于引导外部设备。顶叶皮层中的神经元介导感觉运动转换,对达到目标,手的位置和动作以及其他空间变量的空间坐标进行编码。我们研究了如何在人口水平上表示空间信息,以及不仅解码视觉目标的位置和达到目标的计划,而且还解码有条件的非空间运动响应的可能性。方法。这些动物首先在3D空间中固定了9个目标中的一个,然后在目标改变颜色之后,要么朝着它移动,或执行了非空间运动响应(从按钮上抬起手)。记录了顶神经元的刺突活性。
更新日期:2020-08-14
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