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解码声音内容在早期的视觉皮质的phantasic参与者
Belén M Montabes de la Cruz1, Clement Abbatecola2, Roberto S Luciani3
1Centre for Cognitive Neuroimaging, School of Psychology and Neuroscience, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QB, UK.
Current biology : CB
|October 17, 2024
概括
患有阿芬塔西亚的个体在早期视觉皮层 (EVC) 中表现出减少的听觉处理. 这表明受损的反通路可能会影响声音解码和视觉图像.
科学领域:
- 神经科学是一个神经科学.
- 感官处理 感官处理
- 认知科学 认知科学
背景情况:
- 自然的听觉场景在蒙眼的可视和先天盲人个体的早期视觉皮层 (EVC) 中引起了明显的神经活动.
- 在EVC中,这种听觉处理是以异常度组织的,准确度越来越接近外围视觉区域.
- 灵长类动物的解剖连接性表明,从非视觉区域到早期视觉区域外围的偏好反.
研究的目的:
- 为了调查是否视觉反途径受损的阿芬塔西亚影响听觉信息传输到EVC.
- 为了在EVC中比较有幻觉症的个体之间的声音解码,蒙着眼睛的视力控制和盲人个体.
主要方法:
- 听觉场景被呈现给23个蒙着眼睛的参与者.
- 异常效应在来自蒙眼对照组,盲人和幻想参与者的数据集中建模.
- 整个大脑搜索灯分析被用来探索声音解码的差异.
主要成果:
- 与对照组和盲人组相比,Aphantasic参与者在EVC中显示出声音解读总体下降.
- 建模显示,在非幻的个体中,听觉内容对EVC的反减少.
- 研究结果表明,减少自上而下的投影,减少声音解码和视觉图像受损之间存在联系.
结论:
- 在阿芬塔西亚中,受损的反通路与早期视觉皮层中的听觉信息处理减少有关.
- 这种降低自上而下的投影可能是声音解码减少和视觉图像缺失的基础.
- 这项研究强调了反机制在大脑内的交叉模式感官处理中的作用.
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