在人类成年人视觉皮层中,感觉眼睛占主导地位的可塑性
Ka Yee Kam1, Dorita H F Chang1,2
1Department of Psychology, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
Frontiers in neuroscience
|September 25, 2023
概括
感知训练可以改变成年人的感觉眼睛主导地位. 双眼训练,而不是双眼训练,重塑了视觉皮层的反应,这表明初级视觉皮层的重权机制用于视觉康复.
科学领域:
- 神经科学是一个神经科学.
- 视觉感知 视觉感知 视觉感知
- 认知科学 认知科学
背景情况:
- 感官眼睛主导,视觉皮层优先考虑一只眼睛的输入,在成年人中表现出可塑性.
- 用二光学刺激进行感知训练可以改变视力受损和正常视力的眼睛主导地位.
- 这些训练引起的变化背后的精确神经机制仍然不清楚.
研究的目的:
- 为了研究在感知训练后视觉级联中的神经塑性变化.
- 为了确定学习驱动的感觉眼睛主导感觉眼睛主导感觉眼睛主导感觉眼睛主导感觉眼睛主导感觉眼睛主导感觉眼睛主导感觉眼睛主导.
主要方法:
- 50名视觉正常的参与者接受了为期五天的培训方案,涉及二光学或双眼运动歧视.
- 功能磁共振成像 (fMRI) 用于测量训练前和训练后的大脑活动.
- 在视觉区域V1和hMT+进行了fMRI反应的模式分析.
主要成果:
- 只有在二光学训练后才观察到感官眼睛主导地位的显著变化.
- 在V1和hMT+中的fMRI反应预测了两组训练前眼睛的主导地位.
- 在二眼镜训练后,V1反应发生了显著的变化,不再预测眼睛的主导地位.
结论:
- 视觉训练驱动的眼睛主导的变化是由于初级视觉皮层 (V1) 中视觉输入的重量调整造成的 (V1).
- 这些发现凸显了有针对性的视觉康复策略的潜力,特别是对于双眼视力缺陷的个体.
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