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Psyc 2010 Notes 1-11-16

by: Lauren Fleming

Psyc 2010 Notes 1-11-16 Psyc 2010 sec 3- Taylor

Lauren Fleming
GPA 3.76

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About this Document

These class notes contain information for our first exam
Intro to Psyc
Dr. Taylor
Class Notes
PSYC, Psychology
25 ?




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This 2 page Class Notes was uploaded by Lauren Fleming on Friday January 15, 2016. The Class Notes belongs to Psyc 2010 sec 3- Taylor at Clemson University taught by Dr. Taylor in Spring 2016. Since its upload, it has received 102 views. For similar materials see Intro to Psyc in Psychlogy at Clemson University.

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Date Created: 01/15/16
PSYC Ch 2 Part 1    I. Neuron ­ structure & function  1. dendrite ( old term means tree) ­ picks up impulses and transmits them to   2. cell body or soma with nucleus at center  3. axon ​­ takes impulse away from the cell body (electrical)  and transmits  4. Myelin sheath ­ on certain but not all axons­ serves as insulation­ reflexive  actions ­ if hardens lose muscular control (diseasfatty substance  covering axon  5. terminal branches of axon  part of axon which releases info into gap btwn  neurons  6. synapse ­ the cleft along with the axon of 1 neuron & the dendrite of  another ­ synaptic cleft: gap btwn neurons  7. glial cells: provide support & nutrition to neurons  ● within the nerve cell, passage of info is electrical  ● btwn cells, its chemical  ● dendrites listen axons talk  ● these chem are called neurotransmitters & are contained isynaptic vesicles   ● Types of neurotransmitters KNOW​ :  II. Neurotransmitters  1) acetylcholin ⇨ allows voluntary muscle contractions, facilitates memory ( low in  those with alzheimer’s)  2) serotonin ⇨ important in moods & sleep ­ critical in major depression­­­ it is low  for depressed people; increasing it can cause sleep issues/ drowsiness  3) endorphins ⇨ make you feel better when experiencing pain ­­ block pain  receptors in brain short term ­­ called “endogenous morphine or opiate” ­­  function like morphine ­­ chemically, endorphins resemble morphinKosterlitz  ⇝ over 70 ⇝ discovered that receptors for endorphins may be identical to those in  morphine  4) dopamine ​⇨ produces pleasure in brain ­­ stimulation to dopamine rich areas was  used at 1 time for depression (crude way) ­­ circuits in the “old brain” or limbic  system are closely associated with pleasure ­­ crude bc there was no limit ­­ is  both excitatory(causes symptoms of schizophrenia) &inhibitor(inhibits  muscular tremors)  ● Olds (***) found that rats would press levers to provide stimulation to this  pt of the brain  ● associated with inhibition of tremor (smooth muscle motion), production of  schizophrenia, & production of pleasure  ● brain parts song­ aaron wolf      III.   the brain  A. the old brain  1. brain stem ­ most primitive  medulla­ automatic functions  pons ­ sleeping, waking        2. thalamus (overstudy) ­ sensory relay center ­ everything but smell passes through  here        3. reticular formation ­ system of arousal; consciousness­ a NETWORK        4. cerebellum ­ on top of brainstem ­ motor movement (drawing dates to 1543) ­  smooth muscle movement    B. the new brain    


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