blindsight


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blindsight

(blīnd′sīt′)
n.
The ability of a blind person to sense the presence of a light source.

blindsight

A clinical condition caused by occipital lobe injury, in which a person is functionally blind in part of their visual field, yet are capable of responding in part to visual stimuli.

Blindsight types
Type 1—subjects are completely unaware of any visual stimulus, but capture some features of the visual stimulus—e.g., location, or type of movement.

Type 2—subjects have some awareness (e.g., movement within the blind area), but no visual perception.

blindsight 

A term used to indicate someone who is totally blind but yet is able, unconsciously, to locate an object on the basis of visual cues. It indicates a lesion which has destroyed the visual cortex but in which the retinotectal pathway to the superior colliculus remains unaffected. This pathway is not involved in conscious vision but receives some information from the retina. See retinotectal pathway.
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References in periodicals archive ?
En fenomenos como la vision ciega o blindsight, al estar danada la via comun que permite la experiencia visual [6], resulta extrana la presencia en algunas personas de reactividad respecto a estimulos, lo que permite concluir la existencia de vias distintas de asociacion visual, que permiten, en un grado mayor o menor, la conciencia de estimulos externos, en ausencia de experiencias visuales complejas.
Repression of unconscious information by conscious processing: Evidence from affective blindsight induced by transcranial magnetic stimulation.
Her collection of poems is entitled Blindsight (Carnegie Mellon UP).
Externalists stretch the term to cover blindsight and chicken-sexer believers, even independently of whatever track-record inductive justification these may eventually amass.
Scientists investigating TN's blindsight ability constructed an obstacle course consisting of randomly arranged boxes.
The film, Blindsight, was released in 2006 and since then has won many awards for it depiction of the lives of six exceptional students in Tibet, as they joined world class blind mountain climber, Erik Weihenmayer, in an attempt to summit Lhakpa Ri, the 23,000 foot peak which rises spectacularly beside Mount Everest.
He has previously directed the short films Adam and Eve, Blindsight, Kiss me, god damn it
The BlindSight handset has its keypad on the back - meaning people can use its functions even when they are on a call.
The most extensively studied blindsight patient has frequently reported being aware of "something" in his blind visual field, Merker notes.
Other examples of findings that were easily described with an appeal to consciousness have been neuropsychological syndromes such as blindsight and agnosia, where patients prove to be informed about worldly happenings even though they are unconscious of them.