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Thursday_Oct6th - Psychology 320 Dr Higley I Development...

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Psychology 320 Dr. Higley I. Development and growth a. Baby facts a.i. Initial formation of neural connections begin at about 56 days gestation a.ii. Synaptic and neural connections peak from 34 weeks gestation through 24 months after birth a.iii. During epochs of peak development neural connections form at a rate as high as 40,000 synapses per second a.iv. Adjacent areas dictate what structures will be built next a.v. 40% more synapses are produced compared with the final density archived in adulthood b. Brain maturation b.i. Synaptic pruning (increased efficiency of local computations) b.ii. Myelination (increased speed of neuronal transmission) c. Methods for measuring c.i. Electroencephalogram EEG c.ii. Event-related potentials ERPs c.iii. Functional magnetic resonance imaging fMRI c.iv. Positron emission tomography PET c.v. Near-infrared optical topography NIROT d. Lateralization and plasticity of the cerebral cortex d.i. The left and right hemispheres of the brain control different functions d.ii.
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