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Columbia UniversityThe President's Report 2002-2007
Groundbreaking Work

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Norma Graham (Psychology)

Mathematical Models of Visual Processes

Graham’s research attempts to uncover and describe the hidden stages of visual processing, the many stages now known to intervene between the light acting on the eye and human conscious perception. The neural substrate of these stages is known to be in the back part of the brain, but little is known about what these stages do. Graham and her team derive predictions from theories about these hidden stages, embodied in mathematical models, then compare these predictions to the perceptions that human observers report when they see carefully chosen visual patterns.
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