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