PSYCH-UA 25 Lecture Notes - Lecture 5: Twin Study, Rapid Eye Movement Sleep, Twin
13 Oct 2017
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Document Summary
Most genes are polygenic, we have lots and lots. Gene expressed when present, even with non-matching allele. Gene only expressed with a matching allele. Like the two different guys in the video answering the phone. We can experience altered states of consciousness: Measure eeg to observe brain waves during sleep. Increased release of growth hormone during rem. Evolved- help us conserve energy and also minimize exposure to predators. Freudian idea of dreams expressing undesirable wishes, disguised. Epiphenomenal: consequence of random visual and motor activity. Dreams allow us to rehearse coping strategies , allow us to cope with threat. Evolved threat rehearsal strategies: better in awake states. Physical addiction linked to tolerance to drugs impact and withdrawal symptoms. Psychological addictions is because of hard to break habits. Your body gets used to the drug and you develop a tolerance. Only 5-10% of people who take drugs become addicted. Both genetic and environmental factors link to likelihood of addiction.
