Abstract

The borders of human visual areas V1, V2, VP, V3, and V4 were precisely and noninvasively determined. Functional magnetic resonance images were recorded during phase-encoded retinal stimulation. This volume data set was then sampled with a cortical surface reconstruction, making it possible to calculate the local visual field sign (mirror image versus non-mirror image representation). This method automatically and objectively outlines area borders because adjacent areas often have the opposite field sign. Cortical magnification factor curves for striate and extrastriate cortical areas were determined, which showed that human visual areas have a greater emphasis on the center-of-gaze than their counterparts in monkeys. Retinotopically organized visual areas in humans extend anteriorly to overlap several areas previously shown to be activated by written words.

Keywords

Extrastriate cortexFunctional magnetic resonance imagingVisual cortexVisual fieldGazeNeuroscienceMagnetic resonance imagingComputer visionComputer scienceArtificial intelligencePsychologyMedicine

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Publication Info

Year
1995
Type
article
Volume
268
Issue
5212
Pages
889-893
Citations
2730
Access
Closed

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Cite This

Martin I. Sereno, Anders M. Dale, J.B. Reppas et al. (1995). Borders of Multiple Visual Areas in Humans Revealed by Functional Magnetic Resonance Imaging. Science , 268 (5212) , 889-893. https://doi.org/10.1126/science.7754376

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DOI
10.1126/science.7754376