Health Sciences 2700A/B Lecture Notes - Synaptic Pruning, Synaptogenesis, Neuroplasticity
1 Oct 2022
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Today"s discussion: physical, sensory, perceptual, cognitive, sensorimotor, language, social, Physical changes to make the nervous system more efficient. In year 1, infants grow 25-30cm & body weight triples. Two year olds have proportionally larger skulls, as they need to hold their nearly full- Synaptogenesis (creation of synapses): is followed by a period of synaptic pruning. As things become less useful, they get pruned to make way for other info. Neuroplasticity: the brain"s ability to reorganize neural pathways & connections. Related to piaget"s schemes, assimilation, & accommodation. Myelinization: myelin gradually covers individual axons & electrically insulates. Adaptive reflexes born with, help survival. Rooting: soft cheek touch; causes infants to turn toward the touch & open the. Primitive reflexes controlled by primitive parts of the brain. Can indicate if an infant is on-track for development or not. Moro: sudden noise or loss of support causes the infant to arch the back &
