Ocular dominance in anterior visual cortex in a child demonstrated by the use of fMRI.
Publication/Presentation Date
3-1-2001
Abstract
Negative signal changes in the visual cortex have been observed during visual stimulation when performing functional magnetic resonance imaging (fMRI) in children. This report investigated whether the ocular dominance, which has been demonstrated in the contralateral anterior visual cortex in adults, could be observed in a child by the use of fMRI. A 5-year-old child was studied using fMRI at 1.5 T during alternating monocular visual stimulation under sedation with morphine and pentobarbital. The functional images were motion corrected, and statistical parametric maps were made by contrasting the left or right eye stimulation conditions vs the right or left eye stimulation conditions, respectively, at each voxel. Areas with negative signal changes were found on the left anterior visual cortex during monocular visual stimulation of the right eye and vice versa. There was no area with negative or positive signal change on the ipsilateral visual cortex to the stimulated eye and no area with positive signal change on the contralateral visual cortex. Contralateral ocular dominance of anterior visual cortex similar to that of adults was demonstrated in this child with a negative correlation with the visual stimulus. This finding suggests that peripheral visual fields are represented in the anterior visual cortex of 5-year-old children.
Volume
24
Issue
3
First Page
232
Last Page
234
ISSN
0887-8994
Published In/Presented At
Miki, A., Liu, G. T., Fletcher, D. W., Hunter, J. V., & Haselgrove, J. C. (2001). Ocular dominance in anterior visual cortex in a child demonstrated by the use of fMRI. Pediatric neurology, 24(3), 232–234. https://doi.org/10.1016/s0887-8994(00)00260-5
Disciplines
Diagnosis | Medicine and Health Sciences | Other Analytical, Diagnostic and Therapeutic Techniques and Equipment | Radiology
PubMedID
11301228
Department(s)
Department of Radiology and Diagnostic Medical Imaging
Document Type
Article