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A computational neuroscience account of visual neglect

机译:视觉忽视的计算神经科学说明

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摘要

On the basis of a computational and neurodynamical model, we investigate a cognitive impairment in stroke patients termed visual neglect. The model is based on the "biased competition hypothesis" and is structured in several network modules which are related to the dorsal and ventral pathway in the visual cortex. By damaging the model, visual neglect can be simulated and explained as an unbalanced neurodynamical competition. We predict that acquiring knowledge of objects can increase the frequency of saccades to previously ignored object parts. This prediction is confirmed in a single case study by monitoring eye movements of a neglect patient.
机译:在计算和神经动力学模型的基础上,我们调查了中风患者的视觉损伤,称其为视觉忽视。该模型基于“有偏竞争假设”,并以与视觉皮层的背侧和腹侧路径相关的几个网络模块构建。通过损坏模型,可以忽略视力,并将其解释为不平衡的神经动力竞争。我们预测获得对象的知识会增加扫视到以前忽略的对象部分的频率。通过监视忽略患者的眼球运动,这一预测在单个案例研究中得到了证实。

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