PSY 336 Lecture Notes - Lecture 7: Jerky, Habituation, Local Anesthesia
Document Summary
First adaptations in context reflexes a variety of sensory capacities preadaptations to attend certain stimuli preadaptations for social interaction. Newborns comes into the world prepared in many ways for the developmental tasks they face. Environment, in turn, provides experiences that help shape brain development, motor skills, perceptual abilities, & learned behavior. Infant brain at birth is of its adult weight. By 1 yr , the brain has tripled(3x) in weight. 1 measure of this growth is head circumference, starting at 13. 5 inches & growing in spurts to its avg adult size of 20. 5 inches. Low-intensity fussing / higher-intensity crying (3% of time while alone) Eyes open but unfocused, isolated fussing, body movements (3%) Little mot/ activity, eyes closing & opening (7%) Quiet sleep: babies lie still, breathing slowly & regularly. Active sleep: they stir often, move arms & legs, crinkle faces, breathe faster & more irregularly, & sometimes show rapid eye movements (rems) behind closed eyelids.
