Lecture(CH - Neurotransmitters Acetylcholine(ACh • Effect excitatory • Function muscle movement cognitive functioning Glutamate • Effect

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Chapter 2 Continued The Neuron Nerve cells, the basic elements of the nervous system Structure: Dendrites- receive messages from other neurons Nucleus- directs messages Axon- carries messages destined for other cells Terminal Buttons- send messages to next neuron Myelin Sheath- wrap themselves around the axon providing a protective coating Synapse- a space that forms a gap between two neurons Neurotransmitters- chemicals that carry messages across the synapse to the dendrites of a receiver neuron Excitatory messages- a neurotransmitter that makes it more likely that a receiving neuron will receive and fire an action potential which will travel down its axon Inhibitory Message- a neurotransmitter that blocks an action potential and prevents the message from firing Reuptake- the reabsorption of neurotransmitters by a terminal button
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Unformatted text preview: Neurotransmitters: Acetylcholine (ACh) • Effect- excitatory • Function- muscle movement; cognitive functioning Glutamate • Effect- excitatory • Function- memory Dopamine • Effect- inhibitory or excitatory • Functions-♦ Muscle disorders, mental disorders, Parkinson’s disease ♦ ADHD: too little ♦ Schizophrenia: too much ♦ Regulates reward – (action after something good (high five)) ♦ Keeps anticipatory pleasure Serotonin • Effect- inhibitory • Function-♦ Sleeping, eating, mood, pain, depression ♦ Production stimulated by anti-depressants ♦ SSRI’s (selective serotonin reuptake inhibitors) prevent re-uptake Endorphins • Effect- primarily inhibitory, except in hippocampus • Function- pain suppression, pleasurable feelings, appetites, placebos...
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This note was uploaded on 04/29/2008 for the course PSYC 1000 taught by Professor Handron during the Spring '08 term at East Carolina University .

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