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- W3141572503 abstract "The dorsolateral prefrontal cortex (dlPFC) plays a critical role in spatial working memory and its activity predicts behavioral responses in delayed response tasks. Here, we addressed if this predictive ability extends to other working memory tasks and if it is present in other brain areas. We trained monkeys to remember the location of a stimulus and determine whether a second stimulus appeared at the same location or not. Neurophysiological recordings were performed in the dorsolateral prefrontal cortex and posterior parietal cortex (PPC). We hypothesized that random drifts causing the peak activity of the network to move away from the first stimulus location and toward the location of the second stimulus would result in categorical errors. Indeed, for both areas, in nonmatching trials, when the first stimulus appeared in a neuron's preferred location, the neuron showed significantly higher firing rates in correct than in error trials; and vice versa, when the first stimulus appeared at a nonpreferred location, activity in error trials was higher than in correct. The results indicate that the activity of both dlPFC and PPC neurons is predictive of categorical judgments of information maintained in working memory, and neuronal firing rate deviations are revealing of the contents of working memory." @default.
- W3141572503 created "2021-04-13" @default.
- W3141572503 creator A5005622064 @default.
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- W3141572503 date "2021-04-05" @default.
- W3141572503 modified "2023-10-16" @default.
- W3141572503 title "Drifts in Prefrontal and Parietal Neuronal Activity Influence Working Memory Judgments" @default.
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- W3141572503 doi "https://doi.org/10.1093/cercor/bhab038" @default.
- W3141572503 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8258436" @default.
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