在视觉运动追踪期间有意识但不思考-脑空:对内源性注意力缺陷的fMRI研究
Mohamed H Zaky1,2,3,4, Reza Shoorangiz1,2,5, Govinda R Poudel1,6
1Christchurch Neurotechnology Research Programme, New Zealand Brain Research Institute, Christchurch, New Zealand.
Human brain mapping
|July 18, 2024
概括
注意力缺陷 (ALs) 是短暂的响应能力丧失. 这项研究发现,视觉运动任务期间的AL是非自愿的思维空白,而不是思维漫游,由神经活动模式表明.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 人类表现的人类表现.
背景情况:
- 注意力缺陷 (ALs) 是打开眼睛的表现中出现的干扰.
- 导致ALS的根本原因仍然不清楚,在思想流浪和思想空白理论之间进行辩论.
研究的目的:
- 在连续视觉运动任务期间研究内源性ALS的神经基质.
- 为了确定ALS是否是由思维漫游或思维空白引起的.
主要方法:
- 结合了17名健康成年人执行视觉运动任务的fMRI,眼睛跟踪和性能数据.
- 在使用voxel-wise和ROI-based方法确定ALs期间分析神经活动和功能连接.
- 将ALS的神经特征与已知的心灵流浪生物标志物进行比较.
主要成果:
- 在AL恢复期间,背部前带带皮层/补充运动区域活动增加.
- 没有增加默认模式网络活动,这是心灵漫游的生物标志物.
- 在ALS之前,前面双关节网络活动减少,网络之间的功能连接性发生变化.
结论:
- 在这个视觉运动任务期间的AL是非自愿的思维空白,而不是极端的思维游荡.
- 神经发现支持非自愿的注意力脱和随后的恢复过程.
- 这项研究提供了第一个神经成像证据,证明头脑空白是ALS的原因.
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