PSYC 1F90 Chapter Notes - Chapter 2: Schizophrenia, Aphasia, Frontal Lobe

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29 Sep 2016
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Neurons and neurotransmitters (a) neuron - specialized cell that conducts impulses through the nervous system. 1. 2. dendrites receive the message (primary receiver of impulses) Glial cells help to make the brain more efficient by : holding neurons together, removing dead neurons, making myelin coating. Synapse junction where the axon sending neuron communicates with a receiving neuron across the synaptic cleft (b) neurotransmitters - chemical substances that contain the message . Manufactured in the brain, spina cord, glands . Movement, learning, memory, rem sleep undersupply --- alzheimer"s disease. Black window spider bite > ach increases > violent muscle contractions & convulsions. Drugs that block ach > muscle paralysis. Antipsychotics > block da cocaine, amphetamines > increase activity of da. *this is a monoamine eating habits, sleep, fight-or-flight response undersupply --- depression amphetamines > increase activity of ne fight-or-flight response, metabolism of glucose, energy release during exercise.

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