Psych-5-3 lecture

Psych-5-3 lecture - Click to edit Master subtitle style...

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Unformatted text preview: Click to edit Master subtitle style 2/21/11 CH APTERS Reward Rhythmic behavior (biological clocks) 12 & 13 3rd edition PowerPoints adapted from Kevin Peters, Trent University, Department of 2/21/11 Control of Nonregulatory Behavior • In addition to the amygdala and hypothalamus, the cortex must also have a role in controlling sexual behavior • However, the role of the cortex in sexual behavior is poorly understood • Damage to the frontal lobes can result in a loss of inhibition about sexual behavior or a loss of libido (sexual Kolb & Whishaw, An 2/21/11 • Reward may be a mechanism that evolved to help increase the adaptive fitness both of the entire species and of individual members of a species – Maintain contact with some stimuli but not others • Olds and Milner (1954) Reward 2/21/11 Reward • Evidence that mesolimbic system is involved in reward – Dopamine is released during intracranial self- stimulation – Drugs that enhance dopamine release increase self-stimulation, whereas drugs that decrease dopamine decrease self-stimulation – Levels of dopamine increase when animals engage in behaviors such as feeding and sexual activity – Highly addictive drugs such as nicotine and Kolb & Whishaw, An 2/21/11 Reward •...
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This note was uploaded on 02/20/2011 for the course MUS 107 taught by Professor Reynolds during the Spring '11 term at CUNY Hunter.

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Psych-5-3 lecture - Click to edit Master subtitle style...

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