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Chapter 7 Part 1 Notes

by: Alex Buckley

Chapter 7 Part 1 Notes 35184

Alex Buckley
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About this Document

These notes cover the first half of Chapter 7
Intro to Physiological Psych
Dr. Bursten
Class Notes
Psychology, Biology, Science




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This 3 page Class Notes was uploaded by Alex Buckley on Thursday October 6, 2016. The Class Notes belongs to 35184 at Santa Barbara City College taught by Dr. Bursten in Fall 2016. Since its upload, it has received 15 views. For similar materials see Intro to Physiological Psych in Psychology (PSYC) at Santa Barbara City College.

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Popular in Psychology (PSYC)


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Date Created: 10/06/16
Chapter 7 Sequences of Movement  - Central pattern generators  o Neural mechanisms which generate rhythmic patterns  of motor output  o E.g., wings flapping in birds, fin movements in fish,  larvae, etc. Motor Programs  - Fixed sequence of movement; could be produced by a  central pattern generator or another neural mechanism  - Fentress  o Cephalocaudal (head to tail) grooming in rats & mice o Form of grooming continues in absence of peripheral  input  o Central pattern generator  - Berridge  o Cephalocaudal grooming in diverse rodents  o Destroying an area of the brain does not cause random grooming patterns  o Pattern generator in neostriatum (basal ganglia)  Daniel Wolpert: The Real Reason We Have Brains - Only reason for a brain is adaptable and complex  movement  - Sensory impulses are only important for future movement  - Sea Squirts swim and then plant themselves in a rock and  digest their brain o Once you no longer need to move, you no longer need  a brain - Sensory feedback is noisy  - Movement command is noisy  - Bayesian Inference  o Data import o Prior knowledge   Beliefs  - Plan movements to limit noise  Brain Mechanisms of Movement - Association Cortex o Prefrontal cortex - Secondary motor cortex o Frontal cortex  - Primary motor cortex  o Posterior of the frontal cortex  - Brain stem motor nuclei  - The cerebral cortex helps control complex movement - Primary motor cortex o Sends axons to the basal ganglia, medulla and spinal  cord, which sends its axons to the muscles  - Posterior parietal cortex: responds mainly to visual or  somato­sensory stimuli  o Keeps track of the position of the body relative to the  world o People with damage to the posterior parietal cortex  have trouble converting their visual perceptions into  actions  - Primary somatosensory cortex o Sends sensory information to the primary cortex  - Supplementary (secondary) motor cortex o Most active while preparing for a rapid series of  movements  o E.g. swinging a bat or club - Premotor cortex o Mainly involved in preparations for a movement  rather than the movement itself o Sending info to the primary motor cortex  - Prefrontal cortex Responds to sensory s


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