cortical magnification factor

the population density of the neurons in a cortical map with respect to degrees of visual angle. Visuotopical maps in the brain contain topographical representations of the visual field. Earlier maps of this kind preserved point-to-point correspondence with the retina and are therefore called retinotopic maps. In such maps the cortical magnification factor can be expressed in terms of the number of square millimeters of cortical surface needed to represent each degree of visual angle. At the center of gaze, the retinal fovea centralis (2°–4° of visual angle) has a high cortical magnification factor compared to the periphery. Also called magnification factor.

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Psychology term of the day

May 9th 2024

anorectant

n. see appetite suppressant. Also called anorexiant.