This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1016/j.neuroimage.2003.09.009 in citations.
Neural mechanisms associated with attention to temporal synchrony versus spatial orientation: an fMRI study
Neural mechanisms associated with attention to temporal synchrony versus spatial orientation: an fMRI study
Previous neuropsychological and functional imaging studies have suggested that the right hemisphere is crucially involved in spatial cognition. By contrast, much less is known about the putative left hemisphere specialization for aspects of temporal cognition. Accordingly, we studied with functional...
Saved in:
Personal Name(s): | Lux, S. |
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Marshall, J. C. / Ritzl, A. / Zilles, K. / Fink, G. R. | |
Contributing Institute: |
Institut für Medizin; IME |
Published in: | NeuroImage, 20 (2003) S. s58 - s65 |
Imprint: |
Orlando, Fla.
Academic Press
2003
|
Physical Description: |
s58 - s65 |
DOI: |
10.1016/j.neuroimage.2003.09.009 |
Document Type: |
Journal Article |
Research Program: |
Neurowissenschaften |
Series Title: |
NeuroImage
20 |
Subject (ZB): | |
Publikationsportal JuSER |
Previous neuropsychological and functional imaging studies have suggested that the right hemisphere is crucially involved in spatial cognition. By contrast, much less is known about the putative left hemisphere specialization for aspects of temporal cognition. Accordingly, we studied with functional magnetic resonance imaging the neural mechanisms underlying attention to stimulus onset synchrony or orientational congruence with identical pairs of geometric figures. In each trial, two rhombuses were presented, each 4degrees peripheral to a central fixation cross, in the left and right visual hemifields. In half of the trials, subjects were asked to judge and indicate via button presses whether the rhombuses appeared simultaneously. In the other half of the trials, subjects indicated whether the orientation of the rhombuses was the same (Factor 1, task, temporal synchrony, orientation). In half of the trials, subjects responded with their right hand and in the other half with their left hand (Factor 2, hand, right, left). Data were analyzed using SPM99 and a random-effects model. Attention to orientation differentially activated right temporo-occipital cortex. Attention to stimulus onset synchrony activated left anterior superior temporal gyrus, left inferior parietal cortex, left medial frontal gyrus, and fight operculum. Activation of fight temporo-occipital cortex for attention to stimulus orientation is in good agreement with previous functional neuroimaging studies of stimulus orientation. More importantly, activation of a predominantly left-hemi spheric network with attention to stimulus onset synchrony extends the results of previous functional imaging, psychophysical, and neuropsychological studies of temporal processing. (C) 2003 Elsevier Inc. All rights reserved. |