Citation
Lurie, Lucy A.; Rosen, Maya L.; Weissman, David G.; Machlin, Laura; Lengua, Lilliana; Sheridan, Margaret A.; & McLaughlin, Katie A. (Online ahead of print). Cognitive Stimulation as a Mechanism Linking Socioeconomic Status and Neural Function Supporting Working Memory: A Longitudinal FMRI Study. Cerebral Cortex.Abstract
Childhood experiences of low socioeconomic status are associated with alterations in neural function in the frontoparietal network and ventral visual stream, which may drive differences in working memory. However, the specific features of low socioeconomic status environments that contribute to these disparities remain poorly understood. Here, we examined experiences of cognitive deprivation (i.e. decreased variety and complexity of experience), as opposed to experiences of threat (i.e. violence exposure), as a potential mechanism through which family income contributes to alterations in neural activation during working memory. As part of a longitudinal study, 148 youth between aged 10 and 13 years completed a visuospatial working memory fMRI task. Early childhood low income, chronicity of low income in early childhood, and current income-to-needs were associated with task-related activation in the ventral visual stream and frontoparietal network. The association of family income with decreased activation in the lateral occipital cortex and intraparietal sulcus during working memory was mediated by experiences of cognitive deprivation. Surprisingly, however, family income and deprivation were not significantly related to working memory performance, and only deprivation was associated with academic achievement in this sample. Taken together, these findings suggest that early life low income and associated cognitive deprivation are important factors in neural function supporting working memory.URL
https://doi.org/10.1093/cercor/bhad545Reference Type
Journal ArticleYear Published
Online ahead of printJournal Title
Cerebral CortexAuthor(s)
Lurie, Lucy A.Rosen, Maya L.
Weissman, David G.
Machlin, Laura
Lengua, Lilliana
Sheridan, Margaret A.
McLaughlin, Katie A.
Article Type
RegularContinent/Country
United StatesState
WashingtonRace/Ethnicity
AsianWhite
Black
Hispanic