Blindsight
Blindsight is a phenomenon in which individuals with certain types of brain damage can respond to visual stimuli that they do not consciously see. The term was coined by Lawrence Weiskrantz in 1974.
Pronunciation
- IPA: /ˈblaɪndsaɪt/
Etymology
The term "blindsight" is a combination of the words "blind" and "sight", indicating the paradoxical nature of the condition. It was first used by psychologist Lawrence Weiskrantz in 1974.
Definition
Blindsight is a condition in which an individual can respond to visual stimuli without consciously perceiving it. This typically occurs after damage to the primary visual cortex, the part of the brain responsible for conscious visual perception. Despite the damage, individuals with blindsight can still respond to visual information due to the functioning of other visual pathways in the brain.
Related Terms
- Visual Cortex: The part of the brain responsible for processing visual information.
- Visual Perception: The ability to interpret the surrounding environment by processing information contained in visible light.
- Brain Damage: Injury or damage to the brain that impairs its functions, often permanently.
- Visual Pathways: The pathways by which visual information from the environment reaches the brain.
See Also
- Akinetopsia: A condition in which the individual cannot perceive motion.
- Prosopagnosia: A condition in which the individual cannot recognize faces.
- Cortical Blindness: A total or partial loss of vision in a normal-appearing eye caused by damage to the brain's occipital cortex.
References
- Weiskrantz, L. (1986). Blindsight: A case study and implications. Oxford: Clarendon Press.
External links
- Medical encyclopedia article on Blindsight
- Wikipedia's article - Blindsight
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