Neuroscience 2001 Abstract
| Presentation Number: | 80.1 |
|---|---|
| Abstract Title: | CORTICAL REGIONS ASSOCIATED WITH DEDUCTIVE REASONING A FUNCTIONAL MAGNETIC RESONANCE IMAGING STUDY. |
| Authors: |
Rodriguez Moreno, D. V.*1
; Kim, K. H. S.1,2
; Hirsch, J.1,2
1Dept Neurosc, Cornell Univ Weill Med College, New York, NY 2Dept Neurol, Memoial Sloan-Kettering Cancer Center, New York, NY |
| Primary Theme and Topics |
Cognition and Behavior - Human Cognition and Behavior -- Executive function: Reasoning & problem solving |
| Secondary Theme and Topics | Cognition and Behavior<br />- Human Cognition and Behavior<br />-- Other higher functions |
| Session: |
80. Human cognition and behavior: executive function--reasoning and problem solving I Poster |
| Presentation Time: | Sunday, November 11, 2001 8:00 AM-9:00 AM |
| Location: | Exhibit Hall SS-51 |
| Keywords: |
A network of cortical regions associated with deductive reasoning tasks, performed either with visual or auditory stimuli, was isolated utilizing fMRI. The hypothesis that some of the identified cortical regions are supra-modal while others are modality-specific was tested. Subjects either read or listened to two statements and indicated if the following conclusion was valid or invalid for each trial. Conclusion images were analyzed by a voxel-by-voxel, multistage statistical analysis and a logical AND operation identified modality-independent voxels. The next stage identified those supra-modal brain regions that were conserved across all subjects. A further logical operation, AND NOT, was applied to identify modality-specific cortical regions.
The pattern of brain regions that subserved reasoning in both sensory modalities consisted of left inferior,medial and middle frontal gyri; and bilateral middle frontal gyri and inferior parietal lobule with a left-hemisphere bias. Further, modality-specific activation was observed in neighboring but not overlapping cortical areas of some of these regions, including inferior frontal gyrus. These patterns of shared and unique loci of activation for visual and auditory reasoning suggest a functional organization of these cortical regions where the modality-independent regions may be responsible for fundamental reasoning processes while the modality-specific regions may be specialized for reasoning in each sensory modality.
The pattern of brain regions that subserved reasoning in both sensory modalities consisted of left inferior,medial and middle frontal gyri; and bilateral middle frontal gyri and inferior parietal lobule with a left-hemisphere bias. Further, modality-specific activation was observed in neighboring but not overlapping cortical areas of some of these regions, including inferior frontal gyrus. These patterns of shared and unique loci of activation for visual and auditory reasoning suggest a functional organization of these cortical regions where the modality-independent regions may be responsible for fundamental reasoning processes while the modality-specific regions may be specialized for reasoning in each sensory modality.
Supported by WT Morris Found Fellowship (DRM, KHSK); NIH MSTP Grant (KHSK); CA Dana Found, J & J Focused Giving Found, MSKCC Support Grant NCI (JH).
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2001 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2001. Online.
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