A processing stream in mammalian visual cortex neurons for non-Fourier responses
- 2 July 1993
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 261 (5117) , 98-101
- https://doi.org/10.1126/science.8316862
Abstract
Mammalian striate and circumstriate cortical neurons have long been understood as coding spatially localized retinal luminance variations, providing a basis for computing motion, stereopsis, and contours from the retinal image. However, such perceptual attributes do not always correspond to the retinal luminance variations in natural vision. Recordings from area 17 and 18 neurons of the cat revealed a specialized nonlinear processing stream that responds to stimulus attributes that have no corresponding luminance variations. This nonlinear stream acts in parallel to the conventional luminance processing of single cortical neurons. The two streams were consistent in their preference for orientation and direction of motion but distinct in processing spatial variations of the stimulus attributes.Keywords
This publication has 16 references indexed in Scilit:
- Serial spatial filters in visionVision Research, 1993
- The coding of spatial position by the human visual system: Effects of spatial scale and contrastVision Research, 1992
- Form-Cue Invariant Motion Processing in Primate Visual CortexScience, 1992
- Drift-balanced random stimuli: a general basis for studying non-Fourier motion perceptionJournal of the Optical Society of America A, 1988
- Distortion products in geniculate X-cells: A physiological basis for masking by spatially modulated gratings?Vision Research, 1986
- Separate detectors for simple and complex grating patterns?Vision Research, 1985
- Visual Cortical Neurons: Are Bars or Gratings the Optimal Stimuli?Science, 1980
- Some experiments bearing on the hypothesis that the visual system analyses spatial patterns in independent bands of spatial frequencyVision Research, 1975
- Visual resolution in the catVision Research, 1974
- Evidence for non-linear response processes in the human visual system from measurements on the thresholds of spatial beat frequenciesVision Research, 1973