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 ?
He has been blind since early childhood and worked for a number of blindness organisations and consumer groups before launching Blind-Sight with Paula Waby in 2013.
A collaboration between scientist Janice Lord, artists Kiri Mitchell and Marion Wassenaar, together with Dave Allen and Paula Waby from Blind-Sight for the Art and Light Exhibition, H.
Built by Motorola, Blind-Sight could go on sale in the UK for around pounds 200.