Improvement in visual sensitivity by changes in local context: Parallel studies in human observers and in V1 of alert monkeys

@article{Kapadia1995ImprovementIV,
  title={Improvement in visual sensitivity by changes in local context: Parallel studies in human observers and in V1 of alert monkeys},
  author={Mitesh K. Kapadia and Minami Ito and Charles D. Gilbert and Gerald Westheimer},
  journal={Neuron},
  year={1995},
  volume={15},
  pages={843-856}
}
To explore the role of primary visual cortex in contour integration, we measured the contextual sensitivity of human contrast thresholds and of superficial layer complex cells in monkey V1. An observer's contrast detection was 40% improved by a second suprathreshold bar; the effect was decreased as the two bars were separated along their axis of orientation, were displaced from colinearity, and had their relative orientation changed. Recordings from V1 showed that 42% of complex cells… CONTINUE READING