PSY100H1 Lecture Notes - Lecture 6: Autonomic Nervous System, Brainstem, Neurotransmitter

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14 Oct 2015
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PSY100H1 Full Course Notes
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PSY100H1 Full Course Notes
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Psy 100 - lecture 5 - brain and its strutures. Excites nervous system, memory and autonomic nervous system reactions. Inhibits brain activity by lowering arousal, anxiety and excitation and facillitating sleep. Found at junctions between nerve cells and skeletal muscles. Involved in varied functions such as mood, control of voluntary movement and processing of rewarding experiences. Involved in regulating stress responses such as increasing arousal, attention and heart rate. Involved in regulating mood, sleep, aggresion and appetite. We respond to what we find pleasurable. Nestler and malenka circuitry, stimulation of this pathway reinforces behavior, ensuring that what you just did you will do again. : drugs of abuse commandeer the brain"s natural reward. Drugs hijack brain system, and give us an unnatural reward which make us feel good and make us want to do more drugs to achieve the feeling again. Learning is strongly affected by reward and the rewarding effects.

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