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- W2009121567 abstract "Abstract The Wisconsin Card Sorting Test (WCST) is a commonly used neuropsychological test that assesses abstract reasoning, particularly the ability to conceptualize abstract categories and to shift cognitive set. Although it has been clinically used for evaluating frontal lobe function, there is some controversy as to the specificity of the WCST for detecting frontal lobe damage, and it has been unclear whether different regions of the human prefrontal cortex carry out different subcomponent processes of the WCST. We investigated the detailed functional anatomy in the human brain related to the performance of the WCST. We used positron emission tomography (PET) to explore the neurophysiological changes that accompany decreased WCST performance in aging, and demonstrated that the neural activity in the antero-dorsal prefrontal cortex (area 46) and postero-ventral prefrontal cortex (area 44) during the WCST was attenuated with advancing age in a different way. Moreover, we revealed in a recent functional MRI study that these two prefrontal subregions showed dissociable neural activations in the two different levels of response selection: “attentional set shift” and “reversal shift”. These facts suggest that the antero-dorsal prefrontal cortex and the postero-ventral prefrontal cortex have different neurophysiological roles in the process of shifting behavior in humans." @default.
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- W2009121567 date "2002-04-01" @default.
- W2009121567 modified "2023-09-23" @default.
- W2009121567 title "Dissociable mechanisms of attentional shifts within the human prefrontal cortex" @default.
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- W2009121567 doi "https://doi.org/10.1016/s0531-5131(01)00794-4" @default.
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