1 Department of Ophthalmology and Visual Sciences, University of British Columbia, 2550 Willow St., Vancouver, V5Z 3N9, British Columbia, Canada. swindale@interchange.ubc.ca
A remarkable new technique, two-photon confocal fluorescence microscopy, has revealed an extraordinarily precise organization in the visual cortex. The methodology seems set to become the tool of choice for studying cortical maps.