brain and physical development

brain and physical development - 9/28/10...

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Click to edit Master subtitle style 9/28/10 Physical Development PSY 336
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 9/28/10 Brain Development Neurons : Cells specialized for sending and receiving  messages between the brain and all parts of the body All neurons have 3 main components Cell body : contains basic biological mater that keeps the  neuron functioning Dendrites : … Axon : … Synapses : …
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 9/28/10
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 9/28/10 Brain Development Glial Cells : cells in the brain that provide a variety of  critical support functions Myelin Sheath : a fatty sheath (cover) that forms  around certain axons and increases the speed and  efficiency of information transmission  Cerebral Cortex : considered the “most human part of  the human brain” (e.g., seeing, hearing, emotions, etc).
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 9/28/10 Cerebral Cortex Major areas of the cortex Occipital Lobe   visual information Temporal Lobe   memory, visual recognition,  auditory info
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 9/28/10 Cerebral Cortex
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 9/28/10 Cerebral Lateralization Cerebral cortex divided into two separate halves    cerebral hemispheres Sensory input from one side of the body goes to the  opposite side of the brain and vice versa
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 9/28/10 Developmental Processes Neurogenesis : prenatal proliferation of neurons though  cell division Migration : after birth neurons travel to their destination : once at destination, neurons  Myelination  begins after birth and continues into 
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 9/28/10 Developmental Processes Synaptic Pruning : elimination of excess connections
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 9/28/10 Brain Growth Infant brain at birth is ¼ of its adult weight.  By one year, the brain has tripled in weight.  One measure of this growth is head  circumference, starting at 13.5 inches and  growing in spurts to its average adult size of 20.5  inches.
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Click to edit Master subtitle style 9/28/10 Early Physical Adaptations in  Infancy
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 9/28/10 First Adaptations in Context Newborns come into the world prepared in many  ways for the developmental tasks they face. They  have: a variety of sensory capacities preadaptations to attend certain stimuli preadaptations for social interaction reflexes
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 9/28/10 Sensory Systems in the Newborn:  n For young infants to hear a noise, it must be 10-20 decibels louder than for adults. n It takes 12-13 years to equal adult hearing n Sound discrimination: n Babies good at detecting small changes by 5-8 months; high frequency better than low n Newborns able to discriminate and attend to sounds from all languages
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 9/28/10 Sensory Systems in the Newborn:  n Infants senses of taste and smell are more fully developed at birth than their vision and hearing
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This note was uploaded on 09/27/2010 for the course PGY 166214 taught by Professor Hudson during the Fall '10 term at SUNY Buffalo.

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brain and physical development - 9/28/10...

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