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Bio-Psych: Categories of Neurotransmitters.doc

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Department
Psychology
Course
PSYC 280
Professor
Neil Watson
Semester
Fall

Description
Categories Subcategories, Definitions & Examples Receptors Brain Pathway Implications of the of N.T Neurotrans mitters Amine: Have modifications of a single amino acid nucleus Quaternary Acetylcholine (Ach) Nicotinic (Ionotropic: Cholinergic Muscle contractions Amines: excitatory) (antagonists = cause paralysis) Muscarinic Cholinergic transmission (Metabotropic: in the brain: learning & Inhibitory or memory (Lack of Ach Excitatory) neurons = Alzheimer’s) (antagonists that block receptors = changes in cognition: drowsiness, confusion, memory prob, blurred vision) Monoamines: Catecholamines: Norephinephrine (NE) α1, α2, 1 ,2β Noradrenergic Mood, overall alertness/ (amino acid: (metabotropic) arousal, sexual tyrosine) behaviour; key in ‘fight or flight’ response Epinephrine Dopamine (DA) D 1 D2, D3, D4, D5 Dopaminergic: Motor control (loss of Mesostriatal neurons = Parkinson’s Pathway Disease & Mesolimbo- Reward & cortical Pathway reinforcement; higher cognition (abnormalities = Schizophrenia) Indoleamines: Serotonin (5-HT)
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