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

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.

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Publication Details

Journal
Cerebral Cortex
Published
2024-11-27
DOI
https://doi.org/10.1093/cercor/bhae456
Citations
9
Primary Topic
Neural and Behavioral Psychology Studies
Type
article
Field-Weighted Citation Impact
3.08

Funders

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article

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

Nicholas Humphrey, Béatrice de Gelder, Alan J. Pegna
9 citations
Cerebral Cortex
Neural and Behavioral Psychology Studies
3.08
article

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

Nicholas Humphrey, Béatrice de Gelder, Alan J. Pegna
article en
9 citations

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.

Cerebral CortexVol. 35(1)
The University of Queensland (AU), Maastricht University (NL), Ida Darwin hospital (GB)
Horizon 2020 Framework Programme
Reduced inequalities
Openalex Percentile: Top 8%
Neural and Behavioral Psychology Studies
3.08
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