PSY100H1 Lecture Notes - Lecture 5: Behavioral Addiction, Brainstem, Hypothalamus
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PSY100H1 Full Course Notes
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Document Summary
Drugs of abuse commandeer the brain"s natural reward circuitry. Stimulation of this pathway reinforces behavior, ensuring that what you just did you will do again. The vta sits on top of brain stem. As you go from the brain stem to the back to the front-the inside to the brain to outside is old to new. Basic survival functions are old so they are regulated by old brain functions (breathing etc). Now imagination, creativity, divinity is maintained by the front. basic physiology to higher cognition. The vta gets dopamicetic activity and feeds info forwards to: Nucleus acundum gives us pleasure response amygdala-emotional response indicates significance. This activates affect of motor and attentional systems (how you feel) The thumb is your unconscious-stuff you are not aware of. Thalamus: takes sensory input and feeds it to appropriate brain area. Cerebellum: involved in higher feelings of emotion like empathy, involved in motor function and balance, interpersonal perception.
