HarrisonIntro2007-BioBases

HarrisonIntro2007-BioBases - BIOLOGICAL BASES OF BEHAVIOR...

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1 BIOLOGICAL BASES OF BEHAVIOR “NEUROSCIENCE” THE NEURONAL DOCTRINE Waldeyer NEURON BASIC UNIT OF THE NERVOUS SYSTEM 100 + BILLION (?) LENGTH: WHALE: UP TO 30 FEET LONG
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2 A Motor Neuron From Myers, 1992
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3 The Neuronal Doctrine Neuron = Basic Unit of the Nervous System
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4 Photograph of Neuron (Simon & Schuster,1989)
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5 Electron Microscope Magnified 20,000 Times Seymour Simon, 1997
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6 Synaptic Buttons Electron Microscope Seymour Simon, 1997
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7 HOW DO NEURONS COMMUNICATE? I. GRADED POTENTIALS 1. EXCITATORY (+) = EPSP DEPOLARIZE CELL 2. INHIBITORY (-) = IPSP HYPERPOLARIZE CELL II. ACTION POTENTIALS “ALL OR NONE”
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8 AXON MEMBRANE
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9 Resting Potential = about -70mV -70
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10 Resting Potential; Threshold; Graded Potentials; & Action Potential
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11 How Does Communication Cross the Synapse? Otto Loewi Discovers “Vagustuf”
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12 NEUROTRANSMITTERS AN “ON – OFF SYSTEM” ACETYLCHOLINE (ACh) = “ON” ACETYLCHOLINESTERASE (AChE) = “OFF”
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13 HOW DRUGS WORK MAY ALTER: STORAGE RELEASE REUPTAKE BLOCK RECEPTOR SITE STIMULATE RECEPTOR SITE OTHER MECHANISMS
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14 CHOLINERGIC DRUGS AND TOXINS CURARE BLOCKS ACh RECEPTORS ON MUSCLE SCOPOLAMINE BLOCKS ACh RECEPTORS ON BRAIN ATROPINE BLOCKS ACh RECEPTORS ON GLANDS BOTULISM BLOCKS ACh RELEASE NERVE GAS (DFP) BLOCKS ACHE
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15 OTHER NEUROTRANSMITTERS DOPAMINE (DA) NOREPINEPHRINE (NE) SERATONIN ENDORPHINS OR NEUROPEPTIDES
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16 CRAWFORD LONG UNIVERSITY OF GEORGIA AN ETHER FROLIC DISCOVERY OF A NEW ANAESTHETIC
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17 “How The Brain Works” Neuropsychology A Brief Introduction
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18 From Myers, 1995
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19 Technological Advances Real Time Imaging PET fMRI
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20 PET Scans Showing Brain Activity in a Subject Resting & Listening to Music Myers, 1992
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Pet Scan (From Carlson, 2002) Noun/Verb Processing
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This note was uploaded on 04/16/2008 for the course PSYC 2004 taught by Professor Dmharris during the Fall '06 term at Virginia Tech.

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HarrisonIntro2007-BioBases - BIOLOGICAL BASES OF BEHAVIOR...

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