Neuroscience 2001 Abstract
| Presentation Number: | 71.27 |
|---|---|
| Abstract Title: | Functional MRI mapping of parietal and cingular activity during voluntary saccades. |
| Authors: |
Milea, D.*1
; Lobel, E.1
; Lehericy, S.1
; Berthoz, A.1
; Pierrot-Deseilligny, C.1
1Collège de France, Hopital de la Salpêtrière, PARIS, France |
| Primary Theme and Topics |
Motor Systems - Oculomotor -- Saccadic eye movement |
| Session: |
71. Oculomotor: saccades Poster |
| Presentation Time: | Sunday, November 11, 2001 10:00 AM-11:00 AM |
| Location: | Exhibit Hall LL-7 |
| Keywords: | saccade, functional mri, parietal cortex, cingulate |
The frontal and the supplementary eye fields (FEF and SEF) play a major role in the cortical control of the voluntary saccades in humans but little is known about anatomical location of the parietal and cingular eye fields (PEF and CEF) in functional MRI. The aim of this study was to obtain detailed information of PEF and CEF activation during voluntary saccades. We investigated the cerebral activation during a horizontal self-paced voluntary saccade task versus central fixation in seven young adult healthy volunteers, using echo-planar fMRI in a 1.5 T scanner. Data were analyzed with SPM99. In addition to FEF and SEF activation, both individual and group analysis disclosed significant activation in two anatomically distinct areas within the cingular cortex (posterior cingular sulcus, anterior cingular sulcus) and bilaterally in three anatomically distinct areas within the parietal cortex (anterior part of the intraparietal sulcus (IPS), posterior part of the IPS, precuneus in the interhemispheric fissure). This pattern of eye movements activation suggests that at least two cingulate and three parietal areas may be involved in the control of voluntary saccades. Further functional studies are needed to determine the specific roles played by the cingular and parietal areas.
Supported by Fondation de France
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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