Psychology 2040A/B Chapter Notes - Chapter 4: Phrase (Music), Color Vision, Stereopsis

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Chapter four: infancy: early learning, motor skills & perceptual capacities. A reflex is an inborn, automatic response to a particular form of stimulation. Other reflexes probably helped babies survive in the evolutionary past (moro) Several reflexes help parents establish an interaction & can also help parents comfort the baby. A few reflexes form the basis for complex motor skills that will develop later (tonic neck, palmar grasp, swimming, stepping all motor functions involved are renewed later) Most newborn reflexes disappear after 6 months due to gradual increase in voluntary control as cerebral cortex develops. Doctors test reflexes to see if the baby"s nervous system is healthy. During the 1st month, these states alternate frequently mostly sleeping. These changing arousal patterns are due to brain development and cultural practices. Sleeping declines as they get older and conforms to a circadian rhythm (24h schedule: working parents usually get their infants to sleep during the night.

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