The neurophysiological correlates of colour and brightness contrast in lateral geniculate neurons

@article{Creutzfeldt2004TheNC,
  title={The neurophysiological correlates of colour and brightness contrast in lateral geniculate neurons},
  author={Otto D. Creutzfeldt and John M. Crook and Sabine Kastner and Chaoyi Li and Xing Pei},
  journal={Experimental Brain Research},
  year={2004},
  volume={87},
  pages={3-21}
}
SummaryThe colour of an object is changed by surround colours so that the perceived colour is shifted in a direction complementary to the surround colour. To investigate the physiological mechanism underlying this phenomenon, we recorded from 260 neurons in the parvo-cellular lateral geniculate nucleus (P-LGN) of anaesthetized monkeys (Macaca fascicularis), and measured their responses to 1.0–2.0° diameter spots of equiluminant light of various spectral composition, centered over their… 

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Examination of mechanisms underlying the contrast effects of chromatic surround illumination on spectral responsiveness of cells in the parvocellular layers of the LGN suggest a two stage model for surround effects, a fast one mediated through horizontal connections controlling the gain of receptorbipolar transmission and a slow one through adaptation by straylight and controlling receptor gain.

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