Work

On the bright side of blindsight. Considerations from new observations of awareness in a blindsight patient

Year: 2024

Type: article

Abstract: Blindsight refers to the ability to make accurate visual discriminations without conscious awareness of the stimuli. In this study, we present new evidence from naturalistic observations of a patient with bilateral damage to the striate cortex, who surprisingly demonstrated the ability to detect colored objects, particularly red ones. Despite the slow and effortful process, the patient reported full awareness of the color aspect of the stimuli. These observations cannot be explained by traditional concepts of type 1 or type 2 blindsight, raising intriguing questions about the boundaries between objective and subjective blindness, as well as the nature of visual experience and epistemic agency. Moreover, these findings underscore the significant role that blindsight could play in future research, especially in understanding how higher cortical functions are involved in emotions and feelings. This highlights the necessity for further exploration to better understand the visual features that contribute to the phenomenon of affective blindsight.

Source: Cerebral Cortex

DOI: 10.1093/cercor/bhae456

Authors: Beatrice de Gelder, Nicholas Humphrey, Alan J Pegna

Institutions: Maastricht University, University of Cambridge, The University of Queensland

Language: English

Topic: Visual perception and processing mechanisms

Subfield: Cognitive Neuroscience

Field: Neuroscience

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $5,189

Funders: European Commission, Horizon 2020 Framework Programme