隐约出现
上丘
碰撞
神经科学
被盖腹侧区
弹道
认知心理学
瞎眼
心理学
计算机科学
视觉感受
听力学
计算机视觉
感知
物理
医学
计算机安全
多巴胺能
天文
多巴胺
作者
Fanhua Guo,Jiezhong Zou,Ye Wang,Boyan Fang,Huanfen Zhou,Dajiang Wang,Sheng He,P Zhang
出处
期刊:PLOS Biology
[Public Library of Science]
日期:2024-01-18
卷期号:22 (1): e3002375-e3002375
标识
DOI:10.1371/journal.pbio.3002375
摘要
Detecting imminent collisions is essential for survival. Here, we used high-resolution fMRI at 7 Tesla to investigate the role of attention and consciousness for detecting collision trajectory in human subcortical pathways. Healthy participants can precisely discriminate collision from near-miss trajectory of an approaching object, with pupil size change reflecting collision sensitivity. Subcortical pathways from the superior colliculus (SC) to the ventromedial pulvinar (vmPul) and ventral tegmental area (VTA) exhibited collision-sensitive responses even when participants were not paying attention to the looming stimuli. For hemianopic patients with unilateral lesions of the geniculostriate pathway, the ipsilesional SC and VTA showed significant activation to collision stimuli in their scotoma. Furthermore, stronger SC responses predicted better behavioral performance in collision detection even in the absence of awareness. Therefore, human tectofugal pathways could automatically detect collision trajectories without the observers’ attention to and awareness of looming stimuli, supporting “blindsight” detection of impending visual threats.
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