Journal article

Publication year: 1997

Pages: 1061-1072

Journal: Visual Neuroscience

Volume number: 14

Issue number: 6

ISSN: 0952-5238

eISSN: 1469-8714

DOI Link: https://doi.org/10.1017/S0952523800011779

Publisher: Maximum Academic Press

Abstract: 
We recorded from single cells in area V2 of cynomolgus monkeys using standard acute recording techniques. After measuring each cell's spatial and temporal properties, we performed several tests of its chromatic properties using sine-wave gratings modulated around a mean gray background. Most cells behaved Like neurons in area V1 and their responses were adequately described by a model that assumes a linear combination of cone signals. Unlike in V1, we found a subpopulation of cells whose activity was increased or inhibited by stimuli within a narrow range of color combinations. No particular color directions were preferentially represented. V2 cells showing color specificity, including cells showing narrow chromatic tuning, were present in any of the stripe compartments, as defined by cytochrome-oxidase (GO) staining. An addition of chromatic contrast facilitated the responses of most neurons to gratings with various luminance contrasts. Neurons in all three CO compartments gave significant responses to isoluminant gratings. Receptive-field properties of cells were generally similar for luminance and chromatically defined stimuli. We found only a small number of cells with a clearly identifiable double-opponent receptive-field organization.

Harvard Citation style: Kiper, D., Fenstemaker, S. and Gegenfurtner, K. (1997) Chromatic properties of neurons in macaque area V2, Visual Neuroscience, 14(6), pp. 1061-1072. https://doi.org/10.1017/S0952523800011779

APA Citation style: Kiper, D., Fenstemaker, S., & Gegenfurtner, K. (1997). Chromatic properties of neurons in macaque area V2. Visual Neuroscience. 14(6), 1061-1072. https://doi.org/10.1017/S0952523800011779