Facial blindsight

Blindsight denotes unconscious residual visual capacities in the context of an inability to consciously recollect or identify visual information. It has been described for color and shape discrimination, movement or facial emotion recognition. The present study investigates a patient suffering from cortical blindness whilst maintaining select residual abilities in face detection. Our patient presented the capacity to distinguish between jumbled/normal faces, known/unknown faces or famous people's categories although he failed to explicitly recognize or describe them. Conversely, performance was at chance level when asked to categorize non-facial stimuli. Our results provide clinical evidence for the notion that some aspects of facial processing can occur without perceptual awareness, possibly using direct tracts from the thalamus to associative visual cortex, bypassing the primary visual cortex.


Published in:
Frontiers in human neuroscience, 9, 522
Year:
2015
Publisher:
Lausanne, Frontiers Research Foundation
ISSN:
1662-5161
Keywords:
Laboratories:




 Record created 2015-10-21, last modified 2018-09-13


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)