PSYCH 1XX3 Chapter Notes - Chapter 1: Synaptic Pruning, Neural Development, Neural Plate
5 Apr 2018
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Basic brain regions visible at about 28 days (forebrain, midbrain, hindbrain) Brain looks human after 100 days: does not form sulci and gyri until 7 months (characteristically mammalian) Postnatal development of the nervous system: infancy and childhood: brain development: synaptic development. In few months after birth, rapid increase in number of synapses: increase in synaptic density continues throughout much of the first year of life. Consequences of having extra synapses? (possible: brain development: the role of experience. Increase / decrease of synapses in early development = method of sensory stimulation: necessary for development of sensory systems. If one sense does not receive stimulation, extra connections are left open so that the deprived sense can be supplemented by other senses: ex: blind people have more neural processing through sense of touch. Impoverished" env"t refers to a lack of sensory stimulation (not socioeconomic status: experience expectant / experience dependent.
