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Psychophysiology and imaging of visual cortical functions in the blind: a review

Stephanie L Simon-Dack1, P Dennis Rodriguez, Wolfgang A Teder-Sälejärvi

  • 1North Dakota State University, Faigo, ND 58108-6050, USA. stephanie.simondack@ndsu.edu

Behavioural Neurology
|July 31, 2009
PubMed

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Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Motor and Sensory Areas of the Cortex

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Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
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