Randomized trial shows hebb-type dynamics explains inverse magnification rule in cortical somatotopy, suggesting implications for understanding sensory processing.
The inverse magnification rule in cortical somatotopy is the experimentally derived inverse relationship between cortical magnification (area of somatotopic map representing a unit area of skin surface) and receptive field size (area of restricted skin surface driving a cortical neuron). We show by computer simulation of a simple, multilayer model that Hebb-type synaptic modification subject to competitive constraints is sufficient to account for the inverse magnification rule.
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Grajski et al. (1990) studied this question.
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