PSYC 271 Chapter Notes - Chapter 7: Vestibulocochlear Nerve, Tectorial Membrane, Cochlear Nucleus
19 Nov 2012
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Chapter 7 mechanisms of perception: hearing, touch, smell, taste, and attention. Exteroceptive sensory systems interpret stimuli from outside the body. Primary sensory cortex secondary sensory cortex association cortex. Interaction among these three types of sensory cortex and among other sensory structures are characterized by 3 major principles. Hierarchical organization, functional segregation, and parallel processing. Specific levels and ranks in relation to one another. Moves through a sensory system from receptors, to thalamic nuclei, to primary sensory cortex, to secondary sensory cortex, to association cortex. Neurons respond optimally to stimuli of greater and greater specificity. Each level of a sensory hierarchy receives most of its input from lower levels and adds another layer of analysis before passing it on. The higher the damage, the more specific and complex the deficit. Perception higher-order process of integrating, recognizing, and interpreting complete patterns of sensations. It was believed that the primary, secondary, and association acted together to perform the same function (homogeneous)
