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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Decades later, as a business writer, I quoted what I thought was "Don't be blindsighted.
Shortlist 2003 Early One Morning - Robert Ryan (Headline) Blindsighted - Karin Slaughter (Random House) Aftermath - Peter Robinson (MacMillan) Land of Fire - Chris Ryan (Random House) Gone for Good - Harlan Coben (Orion) Without Fail - Lee Child (Transworld) City of Bones - Michael Connelly (Orion) The Straw Men - Mike Marshall Smith (Harper Collins) Maura's Game - Martina Cole (Headline) Previous winners include: 2002 Mo Hayder The Treatment 2001 Jeffery Deaver The Empty Chair 2000 Boris Starling Storm 1999 Douglas Kennedy The Big Picture 1998 Lee Child Die Trying 1997 David Baldacci Absolute Power 1996 Andrew Klaven True Crime 1995 Thomas Edison St Agnes' Stand 1994 Dominick Dunne A Season in Purgatory 1993 Robert Harris Fatherland 1992 Robert Goddard Into the Blue
Another debut, which goes straight for the Patricia Cornwell market, is Karin Slaughter's Blindsighted (Century, pounds 9.