Contrast normalization and a linear model for the directional selectivity of simple cells in cat striate cortex.

@article{Tolhurst1997ContrastNA,
  title={Contrast normalization and a linear model for the directional selectivity of simple cells in cat striate cortex.},
  author={Dr. D. J. Tolhurst and David Heeger},
  journal={Visual neuroscience},
  year={1997},
  volume={14 1},
  pages={19-25}
}
Previous tests of the linearity of spatiotemporal summation in cat simple cells have compared the responses to moving sinusoidal gratings and to gratings whose contrast was modulated sinusoidally in time. In particular, since a moving grating can be expressed as a sum of modulated gratings, the response to a moving grating should be predictable (assuming linearity) from the responses to modulated gratings. However, these simple linear predictions have shown varying degrees of failure (e.g. Reid… CONTINUE READING

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