Ch 5 6 7 NOTES

Ch 5 6 7 NOTES - Chapter 5: Physical Development in Infancy...

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Chapter 5: Physical Development in Infancy and Toddlerhood During the first few years, babies grow a lot. They gain a lot of weight, and then they lose a lot of weight and after this weight loss, they start to grow again, and lose baby fat. Skeletal Development : a babies head is soft when they are born so that the head can get through. if the fontanelles on the skull overlap, the brain cannot grow and develop. you would know within 6 months old and you would need to get surgery. There are 2 kinds of brain cells: neurons-10% of the brain. and glial cells- 90% of the brain. they are fat cells that take the toxins away from the brain. We can monitor the brain by cat scans, mris, pet scan (you get injected with glutamate and look at the activity of the brain). Brain plasticity - if one part of your brain isn't working 100% well, other parts of the brain will take over and make up for it. it is very strong for babies. Tania's Notes for day i was absent Ch 5 NOT ON quiz on Tuesday Neurons are ten percent, motor neurons in the brain In the middle of the neuron is the cell body Dendrites: when were born we have really little Dendrite are receiving messages Through axon terminal receive messages Dendrites and neurons don’t touch each other, they send
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messages thru synapses If you don’t use ur synapses or dendrites, you lose them (pruning) Einstein's brain weighed 6 pounds b/c of dendrites. Born with few, branch out after first few years, synapse prune Over the axon there MYELIN sheet= glial/fat cells send messages to body Parkinson’s = people shake. Speech is effected, movements choppy b/c of breakdown of myelin Electrical and chemical messages will be sent through the synapse NEUROTRANSMITTERS: need a certain amount to function properly, they are for all purposes Dopamine too much= shiksco, too little = Parkinson's Serotonin related to: mood SSRI: selective serotonin ex prozac. Can take for anxiety, created for depression, more serotonin Endorphins= body’s natural opiates, make you feel good, exercising, volunteering boosts endorphins, feel of being productive hormones that go through blood system Various things running thru system, neurons help in the delivery All or nothing rule: you either get charged up enough to go or you DON’T go We are not born with all neurons we produce some here. 100-200 billion neurons per person The brain in book: lateralization: means we have 2 hemispheres of the brain Corpus callosum: when brain is connected Sever corpus callosum = very hard 90 percent of people are right handed!
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Classical Pavlov and Watson, stimulus response learning always used in advertising b/c you compare something positive with something neutral Operant: skinner reinforcement pigeons wanted food pellets, more aware than classical (biscuit dog and kid wants sticker= reinforcement clear about why your doing sthing) know avoid getting punished and want to be
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This note was uploaded on 08/06/2011 for the course PSYCH 133B taught by Professor Gross during the Fall '10 term at UCLA.

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Ch 5 6 7 NOTES - Chapter 5: Physical Development in Infancy...

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