Loss and enhancement of layer-selective signals in geniculostriate and corticotectal pathways of adult human amblyopia

• DOI: 10.1016/j.celrep.2021.110117
• Publication Date: 2021-12-14T16:21:49Z
• Authors: Wen Wen; Yue Wang; Jiawei Zhou; Sheng He; Xinghuai Sun; Hong Liu; Chen Zhao; Peng Zhang
• Keywords: Parvocellular cell; Superior colliculus; Lateral geniculate nucleus; Stimulus (psychology); Geniculate; Superior Colliculi

How abnormal visual experiences early in life influence human subcortical pathways is poorly understood. Using high-resolution fMRI and pathway-selective stimuli, we investigate the of amblyopia on response properties effective connectivity adult brain. Compared to normal fellow eyes, stimuli presented amblyopic eye show selectively reduced parvocellular layers lateral geniculate nucleus weaker V1. eye, chromatic stimulus decreases superficial superior colliculus, while robustly increases deep SC with stronger from cortex. Therefore, leads selective alterations geniculostriate corticotectal pathways. These findings provide neural basis for deficits acuity, ocular motor control, attention.