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Working memory for sound identity (What) and sound location (Where) has been associated with increased neural activity in ventral and dorsal brain regions, respectively. To further ascertain this domain specificity, we measured fMRI signals during an n-back (n=1, 2) working memory task for sound identity or location, where stimuli selected randomly from three semantic categories (human, animal, and...
Rationale Dopamine is abundant in the prefrontal cortex and striatum, regions implicated in working memory processes. Monkey studies suggest that subpopulations of prefrontal neurons are sensitive to component processes of working memory, and that dopaminergic actions at D1 and D2 receptors differentially affect these neurons. However, it is not known to what extent the effects of dopaminergic stimulation...
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