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• W3107022653 endingPage "117592" @default.
• W3107022653 startingPage "117592" @default.
• W3107022653 abstract "Previous electrophysiological studies in monkeys and humans suggest that premotor regions are the primary loci for the encoding of perceptual choices during vibrotactile comparisons. However, these studies employed paradigms wherein choices were inextricably linked with the stimulus order and selection of manual movements. It remains largely unknown how vibrotactile choices are represented when they are decoupled from these sensorimotor components of the task. To address this question, we used fMRI-MVPA and a variant of the vibrotactile frequency discrimination task which enabled the isolation of choice-related signals from those related to stimulus order and selection of the manual decision reports. We identified the left contralateral dorsal premotor cortex (PMd) and intraparietal sulcus (IPS) as carrying information about vibrotactile choices. Our finding provides empirical evidence for an involvement of the PMd and IPS in vibrotactile decisions that goes above and beyond the coding of stimulus order and specific action selection. Considering findings from recent studies in animals, we speculate that the premotor region likely serves as a temporary storage site for information necessary for the specification of concrete manual movements, while the IPS might be more directly involved in the computation of choice. Moreover, this finding replicates results from our previous work using an oculomotor variant of the task, with the important difference that the informative premotor cluster identified in the previous work was centered in the bilateral frontal eye fields rather than in the PMd. Evidence from these two studies indicates that categorical choices in human vibrotactile comparisons are represented in a response modality-dependent manner." @default.
• W3107022653 created "2020-12-07" @default.
• W3107022653 creator A5009949867 @default.
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• W3107022653 date "2021-02-01" @default.
• W3107022653 modified "2023-10-11" @default.
• W3107022653 title "Response modality-dependent categorical choice representations for vibrotactile comparisons" @default.
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• W3107022653 doi "https://doi.org/10.1016/j.neuroimage.2020.117592" @default.
• W3107022653 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33248258" @default.
• W3107022653 hasPublicationYear "2021" @default.
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