CLD 103 Lecture Notes - Lecture 3: Frontal Lobe, Prefrontal Cortex, Visual Cortex
21 Feb 2016
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They first over connect, but gradually there are less synapse and also more specific. The number of synapse reaches a maximum at about 2 years of age. By 16, only half of the original synapses remain. Hearing and vision is critical; motor develop first. Visual cortex first develops then prefrontal cortex. The process whereby glial cells wrap themselves around axons. Example: kids who like to touch hot oven, they move their hands immediately. Begins before birth in primary motor and sensory areas. Continues into adolescence/adulthood in certain brain regions (ex, frontal lobes) The brain is more mature in adulthood. Adolescence: frontal lobe is the last to by mature, that is why we are reckless. Drugs -> bad influence on the brain. Six months most infants have a regular sleep-wake cycle. By the age of two, most children have spent more time asleep than awake and overall, a child will spend 40 percent of his or childhood asleep.
