The area on S1 associated with the thumb is as large as the area for the forearm. This is an example of cortical magnification.
Cortical magnification refers to the fact that the number of neurons in the visual cortex accountable for processing the visible stimulus of a given length varies as a function of the place of the stimulus within the visual field.
Cortical magnification happens when a disproportionately large place on the cortex is activated via stimulation of a small region on the receptor surface. One instance of cortical magnification is the pretty huge area of the visual cortex which is activated by means of stimulation of the fovea. Cortical magnification describes what number of neurons in a place of the visual cortex is 'responsible' for processing a stimulus of a given size, as a function of the visual field location.
The magnification element of the retina is the linear extent of the visual striate cortex to which each degree of the retina projects. It has been recommended that the magnification factor is directly proportional to visible acuity, but the magnification factor measured in monkeys was compared with visible acuity in guys.
Learn more about neurons here brainly.com/question/13439505
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