Multi-modal representation of effector modality in frontal cortex during rule switching
| Autor: | Benjamin A. Parris, Ian R. Summers, Timothy L. Hodgson, Abdelmalek Benattayallah |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
C850 Cognitive Psychology
Frontal cortex genetic structures Posterior parietal cortex behavioral disciplines and activities 050105 experimental psychology cognitive G750 Cognitive Modelling 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine executive medicine 0501 psychology and cognitive sciences prefrontal Biological Psychiatry Original Research medicine.diagnostic_test Effector fMRI 05 social sciences Cognition manual saccades C800 Psychology Psychiatry and Mental health Neuropsychology and Physiological Psychology Modal medicine.anatomical_structure Neurology Frontal lobe Cerebral cortex Functional magnetic resonance imaging Psychology B140 Neuroscience Neuroscience 030217 neurology & neurosurgery psychological phenomena and processes |
| Zdroj: | BASE-Bielefeld Academic Search Engine Frontiers in Human Neuroscience |
| ISSN: | 1662-5161 |
| Popis: | We report a functional magnetic resonance imaging (fMRI) study which investigated whether brain areas involved in updating task rules within the frontal lobe of the cerebral cortex show activity related to the modality of motor response used in the task. Participants performed a rule switching task using different effector modalities. In some blocks participants responded with left/right button presses, whilst in other blocks left/right saccades were required. The color of a Cue event instructed a left or right response based upon a rule, followed by a Feedback which indicated whether the rule was to stay the same or "Flip" on the next trial. The findings revealed variation in the locus of activity within the ventrolateral frontal cortex dependent upon effector modality. Other frontal areas showed no significant difference in activity between response epochs but changed their pattern of connectivity with posterior cortical areas dependent upon response. Multivariate analysis revealed that the pattern of activity evoked by Flip rule Feedbacks within an apparently supra modal frontal region (dorsolateral frontal cortex) discriminated between response epochs. The results are consistent with the existence of multi-modal representations of stimulus-response (SR) rules within the frontal cerebral cortex. |
| Databáze: | OpenAIRE |
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