When planning fails: individual differences and error-related brain activity in problem solving |
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Authors: | Unterrainer J M Rahm B Kaller C P Ruff C C Spreer J Krause B J Schwarzwald R Hautzel H Halsband U |
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Institution: | Neuropsychology, Department of Psychology, University of Freiburg, Germany. josef.unterrainer@psychologie.uni-freiburg.de |
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Abstract: | The neuronal processes underlying correct and erroneous problem solving were studied in strong and weak problem-solvers using functional magnetic resonance imaging (fMRI). During planning, the right dorsolateral prefrontal cortex was activated, and showed a linear relationship with the participants' performance level. A similar pattern emerged in right inferior parietal regions for all trials, and in anterior cingulate cortex for erroneously solved trials only. In the performance phase, when the pre-planned moves had to be executed by means of an fMRI-compatible computer mouse, the right dorsolateral prefrontal cortex was again activated jointly with right parahippocampal cortex, and displayed a similar positive relationship with the participants' performance level. Incorrectly solved problems elicited stronger bilateral prefrontal and left inferior parietal activations than correctly solved trials. For both individual ability and trial-specific performance, our results thus demonstrate the crucial involvement of right prefrontal cortex in efficient visuospatial planning. |
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Keywords: | individual performance neuroimaging planning problem solving Tower of London trial correctness |
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