PSYC 3404 Chapter Notes - Chapter 4: Emotional Contagion, Thalamus, Myelin
10 Apr 2018
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Cephalocaudal principle: growth begins at the top (head) then proceeds downwards. Proximodistal principle: growth begins in the middle then proceeds outwards. Teething: growth of teeth (5-9 months) causes discomfort and pain. Something to bite/chew on (cold washcloth), topical pain relievers, etc. Neurotransmitters: chemicals that enable neurons to communicate through synapses. Overproduction/exuberance: burst in production of dendritic connections between neurons. Myelination: process of growth of myelin sheath over axon. Synaptic pruning: dendritic connections that are used become faster and stronger, and those who aren"t wither away. Thalamus: receiving and transfer center for sensory information. Infants have high plasticity (highly responsive to environmental stimuli) Infants sleep for longer periods; rem decreased. American infants have diff. amount of sleep than other cultures b/c others have less energy expenditure (held by adults, cultural importance of sleeping) Sids: death within the first year of life, without apparent reason.
