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Brain network connections associated with anosognosia identified - Video
Overview
Anosognosia is a condition in which a patient is unaware of their neurological deficit or psychiatric condition. Visual anosognosia, also called Anton syndrome, is associated with complete cortical blindness and unawareness of vision loss.
Researchers from Brigham and Women’s Hospital, a founding member of the Mass General Brigham healthcare system, sought to identify brain network connections associated with anosognosia. The investigators analyzed the connectivity patterns of 267 lesion locations associated with either vision loss (with and without awareness) or weakness (with and without awareness).
Researchers used a recently validated technique termed lesion network mapping to test whether these lesion-induced deficits map to specific brain networks. They were able to identify distinct network connections associated with visual anosognosia and motor anosognosia as well as a shared network for awareness of these deficits.
The visual anosognosia network was defined by connectivity to visual and metacognitive processing regions while the shared network for awareness converged on the hippocampus and precuneus-brain structures that are associated with memory.
Reference:
Network Localization of Awareness in Visual and Motor Anosognosia,Annals of Neurology, DOI 10.1002/ana.26709
Speakers
Isra Zaman
B.Sc Life Sciences, M.Sc Biotechnology, B.Ed