Areas of the body with a high degree of sensory acuity (very sensitive) have SMALL receptor fields. It determines how accurately a stimulus can be located.
Sensory acuity indicates how accurately a given stimulus is located.
Sensory acuity depends on two major factors: the density of sensory receptors, and the size of receptive (neuronal) fields.
These receptors can respond to different stimuli such as, among others, temperature factors (i.e., thermoreceptor), chemical factors (i.e., chemoreceptor), pressure factors (i.e., mechanoreceptor), etc.
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