PSYC 3250 Lecture Notes - Lecture 8: Semicircular Canals, Stretch Reflex, Grey Matter
14 Oct 2016
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Document Summary
Main advantage to this organization is that the higher levels are left free to perform more complex tasks. Uses parallel pathways in which signals can flow between levels over multiple paths: parallel structure enables the association cortex to exert control over the lower levels. Also characterized by functional segregation each level of the sensorimotor tends to be composed of different units (neural structures), each performing a different function. In sensory systems the information flows up, in the sensorimotor system the information mainly flows down. Monitors the effects of their own activity, and use that information to fine tune their activities. Many adjustments in motor output are controlled unconsciously by the lower levels without the involvement of higher levels. Learning changes the nature and locus of sensorimotor control. Notice its hierarchical structure, the functional segregation of the levels (e. g. secondary motor cortex), the parallel connections between levels and the numerous feedback pathways.
