PSYCH 100 Lecture Notes - Lecture 4: Acetylcholine, Schizophrenia, Haloperidol

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PSYCH 100 Full Course Notes
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PSYCH 100 Full Course Notes
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Dendrites receive signals from other neurons or sensory structures. Axon sends signals to other neurons/effector cells (muscles) Myelin sheath fatty substance encasing axon to increase the speed of signal transmission. Axon terminals stores/releases neurotransmitters (nts) and enzymes. Synapse space between axons where nts and enzymes are released. Receptor sites locations on dendrites on next neuron where nts bind. Action potential: neuron @ rest = -70 mv, dendrite is stimulated and + ions flow into the cell in one section of axon, threshold = -55 mv. Acetylcholine movement, learning, memory: too little = alzheimer"s, dementia. Endorphins pain relief, released during exercise/stress/eating chocolate. Serotonin mood, sleep, hunger, arousal: too little = depression. Dopamine movement, learning, attention, emotion: too little = parkinson"s, too much = schizophrenia. Gaba eating, sleeping (inhibitory rather than excitatory like the rest on this list: too little = anxiety (these neurotransmitters, their functions, and their associated disorders will be on the exam!)

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