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lecture3outline_neuroscience__revised[1] - PSY120-Carol...

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PSY120—Carol Donnelly Lecture 3—August 31, 2006 NEUROSCIENCE Neuroscience – Understanding the brain & its relation to behavior I. Bio-Psycho-Social model II. Nervous System – Electro Chemical Communication System A. Central Nervous System – Brain and Spinal Cord 1. Neurons – Building blocks (cells) of the nervous system that receive and transmit (send) information. a. Sensory Neurons – receive b. Inter Neurons – transfer information from one neuron to another c. Motor Neurons – transmit (send to react) 2. Neurotransmitters – Chemical messengers that relay information from one neuron to the next. a. Dopamine – inhibitory effects; linked to Parkinson’s disease & schizophrenia. b. Serotonin – Linked to sleep, dreaming, arousal, depression, eating disorders, OCD. c. GABA – Linked to anxiety d. Acetylcholine – Linked to Alzheimer’s e. Endorphins – Morphine, chemical painkillers. 3. Stages of brain evolution a. Brain Stem – Survival (hind brain) i. Oldest and innermost part; central core; (Old Brain) ii.
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