PSY210H5 Lecture Notes - Lecture 3: Visual Acuity, Central Nervous System Depression, Leg Before Wicket
15 Jan 2017
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Preterm infants = born before 38w gestation; weight appropriate for gestational weight; most common in mothers under 15/over 40. Number/severity of problems increase as birth weight + age at birth decreases. Very lbw (low birth weight) kids have more learning problems + lower achievement levels in reading/math than moderately lbw kids. Infant reflexes = involuntary response to external stimulation; many have survival value + disappear within first year of life; can be combined w tests to gauge health/maturity/capacities. Babinski: stoke heel to toe spread toes + lift hallux; lack indicates lower spine deficit, disappears @12m. Moro/startle: lower head to simulate falling open arms wide + grasp holder/chest; lack indicates cns deficit, disappears @1. 5y. Palmer/grasp: cylindrical item in palm grasp whatever in palm; lack indicates cns depression, disappears @3-4m, replaced w voluntary grasping. Plantar/toe grasp toes curl around object; lack indicates lower spine deficits, disappears @8- Rooting: stroke cheek turn head + start sucking; lack indicates cns depression, disappears.
