PSYC 101 Lecture Notes - Lecture 23: Forebrain, Hindbrain, Synaptic Pruning
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PSYC 101 Full Course Notes
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Psyc 101 week 9 lecture 2: biological psychology. Brain first develops in 3 sections after gestation: prosencephalon forebrain, mesencephalon midbrain, rhombencephalon - hindbrain. The brain at birth: ~86 billion neurons, grows about 5x between birth and adulthood (we are born with giant brains compared to our bodies) Approximately 80% adult size at age 2. Myelination requires fast and cholesterol in the diet. 38 weeks of gestation to end of first year: synaptic pruning. Large scale (all the connections that aren"t essential anatomically as an adult get eliminated quickly) Connections that are not necessary are pruned. Use it or lose it connections are lost based on what we. Neurogenesis neural stem cells need: have the potential to become any of the cells in your nervous system. Mostly found in the hippocampus: may play a role in learning new information, some evidence for an increase with exercise, enriched environments, and.
