PSYC 317 Lecture Notes - Lecture 7: Behavioral Enrichment, Major Trauma, Rhesus Macaque
11 May 2016
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Molecular basis of epigenetics (laura stone guest lecture) Lamarck: the environment and challenges that we experience can be passed to the next generation but not through genetics. Giraffe example: each generation would grow a longer neck because they have to adapt to leaves that were higher and higher. Ridiculed but there may be truth to it. Something that happens early in life can change your behaviour as an adult. And remember: glucocorticoid receptors = feed(cid:271)a(cid:272)k - resilien(cid:272)e. Implies that maternal care programs something in the brain that changes how we respond at the cellular/biological level to something in our environment. Biochemical ability of brain to respo(cid:374)d to stress (cid:894)(cid:272)ellular/(cid:373)ole(cid:272)ular(cid:895) . Learned behaviour passed across generations (other example: language) Early environmental exposure alters seemingly unrelated adult behaviour (would not expect grooming to affect anxiety and stress in adulthood) There are two different ways that things can become inherited transgenerationally: environmental programming: prenatal, postnatal, adolescent, adult.
