Abstract：
:Post-mortem histological and in vivo neuroimaging findings both reveal frontal lobe development that extends beyond the adolescent years. Few studies have examined whether this protracted neurodevelopment coincides with improvements in adolescent performance on putative frontal lobe tasks. An instrumental function supported by the frontal lobes is working memory, the ability to maintain and manipulate information online. This study investigated the performance of typically developing children and adolescents on a battery of working memory tasks. Findings revealed an improvement in performance on most working memory tasks across the adolescent years. In contrast, no improvement was observed on tasks largely supported by more posterior neural substrates. Current findings indicate a similar unfolding of the executive aspects of verbal working memory as previously demonstrated with spatial working memory. Factor analysis revealed a grouping of working memory tasks based largely on task demands, irrespective of working memory domain, adding support for process-specific models of prefrontal organization. Important implications for typical and atypical frontal lobe development are discussed.
journal_name
Dev Neuropsycholjournal_title
Developmental neuropsychologyauthors
Conklin HM,Luciana M,Hooper CJ,Yarger RSdoi
10.1207/s15326942dn3101_6subject
Has Abstractpub_date
2007-01-01 00:00:00pages
103-28issue
1eissn
8756-5641issn
1532-6942journal_volume
31pub_type
杂志文章abstract：:We report a Principal Component Analysis (PCA) and the scalp distribution of the normalized peak amplitude values for speech-related auditory Event-related Potentials (ERP) P150-250 and N250-550 in 7-, 11-, and 20-month-old American infants learning English and in 10-13-month-old Mexican infants learning Spanish. Afte...
journal_title：Developmental neuropsychology
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pub_type： 杂志文章,随机对照试验
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doi：10.1207/s15326942dn2901_6
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