Motion and vision: why animals move their eyes

  title={Motion and vision: why animals move their eyes},
  author={Michael Francis Land},
  journal={Journal of Comparative Physiology A},
  • M. Land
  • Published 1 October 1999
  • Biology
  • Journal of Comparative Physiology A
Abstract Nearly all animals with good vision have a repertoire of eye movements. The majority show a pattern of stable fixations with fast saccades that shift the direction of gaze. These movements may be made by the eyes themselves, or the head, or in some insects the whole body. The main reason for keeping gaze still during fixations is the need to avoid the blur that results from the long response time of the photoreceptors. Blur begins to degrade the image at a retinal velocity of about 1… 

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