PSYC 2110 Lecture Notes - Lecture 4: Myelin, Puberty, Dysphoria
30 Mar 2014
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Phys growth: body fat inc gradually, muscle development -- longer and thicker, fontanels (soft spots) disappear during 1st 2 years. Breast feeding: vitamins, easier transition to solids, inc immune system. Inc in synapses: growth and multiplication of glial cells. Glial cells - form myelin and provide support and protection for neurons in the brain. Types of brain plasticity: modifiability: cells can be modified, compensation - cells can compensate for defects in other cells. Experience-expectant processes: brain creates circuits based on human: experience-dependent processes: additional growth & refinement of brain due to learning. Maltreatment & the brain: prolonged stress over-produced cortisol, amygdala: tende. Shaken baby syndrome: form of child abuse brain & blood vessels damaged; swelling causes lack of blood and oxygen: gross motor skills, fine motor skills: Malnutrition effects grotth, associated with lower levels of intelligence. Brain development: at 5 yrs 90% of brain is developed.
