PS263 : Lesson 7 Chapter 8 .docx
Document Summary
Three principles of sensorimotor function: functioned hierarchically, parallel organized, association cortex (highest levels, muscles (lowest levels, higher levels of the hierarchy can preform more advanced functions, functional segregation each level of the sensorimotor tends to be composed of different units, so it can preform different function, information mainly flows downward, motor output is guided by sensory input, the sensory feedback plays important roles in directing the responses, ballistic movements brief all or nothing high speed movements a response not normally influenced by feedback like swatting a fly, adjustments are controlled unconsciously on the lower levels of the system, so higher levels aren"t distracted and can focus on their task, learning changes the nature and locus of sensorimotor control, during learning, each individual response is performed under conscious control but after repeated attempts, the action takes place unconsciously, association cortex (cid:224) secondary motor cortex (cid:224) primary motor cortex (cid:224) brain.
