TRENDS IN CNS DEVELOPMENT

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Presentation transcript:

TRENDS IN CNS DEVELOPMENT Increasing complexity with new structures added The size of an area reflects the importance of sensory input from that area Many areas are arranged in topological maps.

Tools for Brain Study CT Scan PET Scan MRI EEG

Waves -- alpha 10-12 cps from parietal and occipital when awake beta -- 13-15 cps in frontal lobes stimulated by perceptual activity theta --5-8 cps in temporal and occipital lobes. Common in newborns, high stress in adults Delta --1-5 cps during sleep

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