PSYC 2410 Study Guide - Cranial Nerves, Glossopharyngeal Nerve, Neuropathic Pain
6 Apr 2013
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Exteroceptive sensory systems: auditory (hearing), somatosensory (touch), olfactory (smell) and gustatory (taste) Sensory areas of the cortex are of 3 fundamental types: Primary sensory cortex: receives most of the its input directly from the thalamic relay nuclei of that system. Secondary sensory cortex: areas of the sensory cortex that receive most of their input from the primary sensory cortex or from other areas of secondary sensory cortex of the same system. Association cortex: receive input from more than one sensory system. The higher the level of damage, the more specific and complex the deficit. Thus, psychologists divide the general process of perceiving into 2 general phases: sensation: process of detecting the presence of stimuli, perception: higher-order process of integrating, recognizing and interpreting complete patterns of sensations. Functional segregation: each of the 3 levels of cerebral cortex: primary, secondary and association, in each sensory system contains functionally distinct areas that specialize in different kinds of analysis.
