PSY 302 Lecture Notes - Lecture 3: Allele, Phenotype, Fertility Medication

• School: Ryerson University
• Department: Psychology
• Course: PSY 302
• Professor: Lixia Yang

Document Summary

Newborn reflexes: reflex: involuntary, automatic response to a stimulus. Infant states: regular/quiet sleep (8 hours, irregular/active sleep (8 hours, rem, drowsing (1hour, alert awake (alert inactive) (2. 5 hrs. , active awake (alert activity) (2. 5 hrs. , crying (2 shrs. ) Proportion of rem sleep: 50% of newborn sleep, 25 - 30 % of 6-month-old sleep. Why do newborns spend so much time in rem: to get re-energized and charged up because newborns get tired easily. Summary: newborns: newborn reflexes, infant states: (6 stages, brain development. Structures of the brain: neurons: basic units of the brain and nervous system, synapses: connective spaces between neurons. Psy302/w2016/yang 2: glia: nerve cell that develop and produce myelin to protect and nourish the neurons, the cerebral cortex. B. developmental processes: neurogenesis (proliferation of neurons, synaptogenesis (formation of synapses): overproduction (genetic, synaptic pruning (elimination of excess connections, experience-dependent, myelination (insulation)