在失明中,个体大脑可塑性模式的纵向稳定性
Lénia Amaral1, Peyton Thomas1, Amir Amedi2,3
1Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA.
bioRxiv : the preprint server for biology
|November 21, 2023
概括
失明个体的初级视觉皮层 (V1) 随着时间的推移显示出稳定,独特的功能连接. 这表明V1中的个体特异性重组模式可以作为视力康复的神经标志物.
科学领域:
- 神经科学是一个神经科学.
- 神经可塑性 神经可塑性
- 感官替代 感官替代 感官替代
背景情况:
- 出生失明的人的主要视觉皮层 (V1) 被招募用于各种非视觉功能,包括听觉,触觉,语言和记忆.
- 这引发了关于V1的作用是否灵活和随着时间的推移而适应的问题,或者如果可塑性模式是个体特有的问题.
研究的目的:
- 调查先天盲人的初级视觉皮层 (V1) 中功能连接模式的时间稳定性.
- 要确定V1重组中的个体差异是否随时间变化而稳定,并可以作为唯一标识符.
主要方法:
- 功能性磁共振成像 (fMRI) 用于在两年内测量先天盲人的初级视觉皮层 (V1) 中的功能连接.
- 多维素模式分析 (MVPA) 用于评估单个V1重组模式的独特性和稳定性.
主要成果:
- 出生失明个体的初级视觉皮层 (V1) 中的功能连接模式在两年内被发现非常稳定.
- 在V1中,个别的重组模式足够独特,可以对参与者身份进行解码,表明稳定,个体特定的功能组织.
结论:
- 失明者的初级视觉皮层 (V1) 呈现出稳定的,个体特有的功能连接和重组模式.
- 这些稳定的V1可塑性的个体差异可能代表开发个性化视力康复和辅助策略的潜在神经标志物.
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