盲人的视觉皮层,而不是聋人的听觉皮层,成为多重需求的区域
Hasan Duymuş1,2, Mohini Verma3,4, Yasemin Güçlütürk5
1Department of Psychology, Bilkent University, Ankara, 06800, Türkiye.
Brain : a journal of neurology
|June 12, 2024
概括
失明者的视觉皮层缺失成为多重需求 (MD) 网络的一部分,处理认知控制需求. 聋人的听觉皮层没有表现出这种跨模态可塑性.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经可塑性 神经可塑性
背景情况:
- 感官剥夺可能导致跨模态可塑性,其中大脑区域适应处理来自其他感官的信息.
- 以前的研究表明,被剥夺的感觉皮层可能会处理新的感觉模式.
- 多重需求 (MD) 网络位于额头和顶区域,参与域一般的认知控制.
研究的目的:
- 调查被剥夺的感觉皮层,特别是盲人的视觉区域和聋人的听觉区域,是否融入多重需求 (MD) 网络.
- 为了确定这些被剥夺的区域是否会响应各种认知控制需求而激活,类似于正规的MD网络.
主要方法:
- 功能性磁共振成像 (fMRI) 用于评估盲人和聋人的大脑活动,与视力和听力控制相比.
- 参与者执行了涉及各种控制需求的任务,包括工作记忆,决策和感觉运动速度.
- 进行了功能连接分析,以检查缺少的感觉区域与前对对对面的MD网络之间的关系.
主要成果:
- 在失明个体中,双边头 (视觉) 区域在多个控制需求中显示出激活,与视力正常的人不同.
- 在盲人中,这些尾区域与前面对面的MD区域具有更高的功能连接.
- 早期聋人个体的听觉区域在响应各种控制要求时没有激活,表明它们没有成为MD网络的一部分.
结论:
- 盲人的视觉皮层被招募到多重需求 (MD) 网络中,这表明它在域一般认知控制中的作用,而不是新的感官处理作用.
- 这种融入MD网络似乎是盲人视觉皮层的独特特征,而不是所有被剥夺的感觉皮层的普遍现象.
- 聋人的听觉皮层没有表现出这种形式的跨模式招募到MD网络中.
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