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Unformatted text preview: of the brain's excess synapses will be pruned and which
will be maintained -synapses that are frequently activated are preserved 1. Experience-Expectant Processes
Experience-expectant plasticity is the
process through which the normal wiring of
the brain occurs in part as a result of the kinds of general experiences that every human who inhabits any reasonbly normal envt will have
Is accompanied by vulnerability -if the expected experience is not available, as in the case of congenital cataracts, development will be impaired Sensitive Periods
A key element in experience- expectant
plasticity is timing.
There are a few sensitive periods when the human brain is particularly sensitive to particular kinds of external stimuli 16 5/22/13 Experience-Dependent Processes
is the process
are created and
throughout life as a
function of an
experience. D. Brain Damage and Recovery
Timing and plasticity play
The worst time to suffer brain damage is
when neurogenesis and neuron migration
(during prenatal development and the ﬁrst year after birth) The greatest plasticity is observed when
synapse generation and pruning are
during early childhood
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This note was uploaded on 01/21/2014 for the course PSYCH 302 taught by Professor Whitneyweikum during the Fall '13 term at University of British Columbia.
- Fall '13