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Title: Why do you think a large part of the primary somatic sensory area of the cerebra Post by: tenyba on Jul 17, 2014 Why do you think a large part of the primary somatic sensory area of the cerebral cortex is devoted to the face and hands?
Title: Re: Why do you think a large part of the primary somatic sensory area of the cerebra Post by: padre on Jul 17, 2014 The amount of primary motor cortex devoted to a body part is not proportional to the absolute size of the body surface, but, instead, to the relative density of cutaneous motor receptors on said body part. The density of cutaneous motor receptors on the body part is generally indicative of the necessary degree of precision of movement required at that body part. For this reason, the human hands and face have a much larger representation than the legs.
Title: Re: Why do you think a large part of the primary somatic sensory area of the cerebra Post by: tenyba on Jul 17, 2014 Thank you so much!!!! :)
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