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Numerical processing in the human parietal cortex during experimental and natural conditions.
Numerical processing in the human parietal cortex during experimental and natural conditions. Nature communications Dastjerdi, M., Ozker, M., Foster, B. L., Rangarajan, V., Parvizi, J. 2013; 4: 2528-?Abstract
Human cognition is traditionally studied in experimental conditions wherein confounding complexities of the natural environment are intentionally eliminated. Thus, it remains unknown how a brain region involved in a particular experimental condition is engaged in natural conditions. Here we use electrocorticography to address this uncertainty in three participants implanted with intracranial electrodes and identify activations of neuronal populations within the intraparietal sulcus region during an experimental arithmetic condition. In a subsequent analysis, we report that the same intraparietal sulcus neural populations are activated when participants, engaged in social conversations, refer to objects with numerical content. Our prototype approach provides a means for both exploring human brain dynamics as they unfold in complex social settings and reconstructing natural experiences from recorded brain signals.
View details for DOI 10.1038/ncomms3528
View details for PubMedID 24129341
View details for PubMedCentralID PMC3826627