Loose, Rainer and Kaufmann, Christian and Auer, Dorothee P. and Lange, Klaus W. (2003) Human prefrontal and sensory cortical activity during divided attention tasks. HUMAN BRAIN MAPPING, 18 (4). pp. 249-259. ISSN 1065-9471, 1097-0193
Full text not available from this repository. (Request a copy)Abstract
In our natural environment, the ability to divide attention is essential since we attend simultaneously to a number of sensory modalities, e.g., to visual and auditory stimuli. In this study, functional magnetic resonance imaging (fMRI) was used to study brain activation while a divided attention task was performed. Brain activation was also assessed under selective attention. Fourteen healthy male subjects aged between 19 and 28 years underwent fMRI studies using gradient EPI sequences. Cingulate activation was evident in all attention tasks. Focusing attention on one modality (visual or auditory) increased the activity in the corresponding primary and secondary sensory area. When attention is divided between both modalities, the activation in the sensory areas is decreased, possibly due to a limited capacity of the system for controlled processing. Left prefrontal activation, however, was evident selectively during the divided attention task. The present results suggest that this area may be important in the execution of controlled processing when attention is divided between two sources of information, These results support the view that the prefrontal cortex is involved in the central executive system and controls attention and information flow. Hum. Brain Mapping 18:249-259, 2003. (C) 2003 Wiley-Liss, Inc.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POSITRON-EMISSION-TOMOGRAPHY; PRIMARY VISUAL-CORTEX; AUDITORY SELECTIVE ATTENTION; FUNCTIONAL-ANATOMY; SPATIAL ATTENTION; WORKING-MEMORY; NONSPATIAL ATTENTION; EPISODIC MEMORY; BRAIN ACTIVITY; PET-RCBF; attention; divided attention; selective attention; focused attention; fMRI; prefrontal cortex; cingulate cortex; visual cortex; auditory cortex |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie III (Biologische, Klinische und Rehabilitationspsychologie) - Prof. Dr. Klaus W. Lange |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Aug 2021 12:17 |
| Last Modified: | 17 Aug 2021 12:17 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39150 |
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