Developmental trajectories of the components of DLPFC
circuitry altered in schizophrenia
Given that both working memory performance and associated patterns
of DLPFC activity continue to mature through late adolescence (Luna
et al., 2010), and that working memory impairments are detectable in
individuals with schizophrenia years before the onset of psychosis
(Reichenberg et al., 2010), how might the schizophrenia-associated
alterations in DLPFC circuitry arise during postnatal development?
Although opportunities to directly study circuitry development at the
cellular level in humans are quite limited, macaque monkeys provide
an excellent model system. Similar to humans, monkeys progressively
improve in working memory ability from early childhood through late
adolescence (Goldman-Rakic, 1987), and this improvement is associated
with an increased engagement of DLPFC circuitry in task
performance (Alexander & Goldman, 1978; Alexander, 1982).
Developmental trajectories of the components of DLPFCcircuitry altered in schizophreniaGiven that both working memory performance and associated patternsof DLPFC activity continue to mature through late adolescence (Lunaet al., 2010), and that working memory impairments are detectable inindividuals with schizophrenia years before the onset of psychosis(Reichenberg et al., 2010), how might the schizophrenia-associatedalterations in DLPFC circuitry arise during postnatal development?Although opportunities to directly study circuitry development at thecellular level in humans are quite limited, macaque monkeys providean excellent model system. Similar to humans, monkeys progressivelyimprove in working memory ability from early childhood through lateadolescence (Goldman-Rakic, 1987), and this improvement is associatedwith an increased engagement of DLPFC circuitry in taskperformance (Alexander & Goldman, 1978; Alexander, 1982).
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