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A Similarity-Based Process for Human Judgment in the Parietal Cortex [Elektronisk resurs]

Karlsson Wirebring, Linnea, 1979- (författare)
Stillesjö, Sara (författare)
Eriksson, Johan (författare)
Juslin, Peter (författare)
Nyberg, Lars, 1966- (författare)
Umeå universitet Samhällsvetenskapliga fakulteten (utgivare)
Umeå universitet Medicinska fakulteten (utgivare)
Umeå universitet Medicinska fakulteten (utgivare)
Umeå universitet Medicinska fakulteten (utgivare)
Publicerad: Frontiers Media S.A. 2018
Engelska.
Ingår i: Frontiers in Human Neuroscience. - 1662-5161. ; 12
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  • One important distinction in psychology is between inferences based on associative memory and inferences based on analysis and rules. Much previous empirical work conceive of associative and analytical processes as two exclusive ways of addressing a judgment task, where only one process is selected and engaged at a time, in an either-or fashion. However, related work indicate that the processes are better understood as being in interplay and simultaneously engaged. Based on computational modeling and brain imaging of spontaneously adopted judgment strategies together with analyses of brain activity elicited in tasks where participants were explicitly instructed to perform similarity-based associative judgments or rule-based judgments ( n = 74), we identified brain regions related to the two types of processes. We observed considerable overlap in activity patterns. The precuneus was activated for both types of judgments, and its activity predicted how well a similarity-based model fit the judgments. Activity in the superior frontal gyrus predicted the fit of a rule-based judgment model. The results suggest the precuneus as a key node for similarity-based judgments, engaged both when overt responses are guided by similarity-based and rule-based processes. These results are interpreted such that similarity-based processes are engaged in parallel to rule-based-processes, a finding with direct implications for cognitive theories of judgment. 

Ämnesord

Medical and Health Sciences  (hsv)
Basic Medicine  (hsv)
Neurosciences  (hsv)
Medicin och hälsovetenskap  (hsv)
Medicinska och farmaceutiska grundvetenskaper  (hsv)
Neurovetenskaper  (hsv)

Genre

government publication  (marcgt)

Indexterm och SAB-rubrik

judgment and decision-making
fMRI
exemplar model
multiple-cue judgment
cognitive model
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