PSY210H5 Chapter Notes - Chapter 4: Tactile Signing, Biological Motion, Depth Perception
Document Summary
Newborns have well-developed reflexes and sensory response, and they can respond and adapt to the environment from the first moment after birth. Reflexes a human"s involuntary response to external stimulation: these many reflexes help ensure the newborn"s survival. Abnormalities in reflexes during the first days or weeks after birth can be useful indicators for identifying visual and hearing problems. Can also help predict abnormal functions that do not appear until months or years later. At birth, physicians often test newborns for certain reflexes to evaluate the baby"s cns as exposed to harmful substances in utero offer neurological defects. There are two states walking (and the variation of crying behaviour) and sleeping. Infants spend 50% of their sleep in rem whereas adults spend 20%. Starts arrhythmically and at low intensity; gradually become louder and more rhythmic; sequence is cry-rest-inhale- rest. Same as basic pattern except that segments of crying, resting, and inhaling vary in length, and crying segments are longer.
