Responses of cells in monkey visual cortex during perceptual filling-in of an artificial scotoma. Deweerd, P.; Gattass, R.; Desimone, R.; and Ungerleider, L. G. Nature, 377:731-734, October, 1995.
abstract   bibtex   
WHEN we view a scene through one eye, we typically do not see the scotomas created by the optic disc and the blood vessels overlying the retinal surface. Similarly, when a texture field containing a hole is steadily viewed in peripheral vision (artificial scotoma), the hole appears to fill in with the surrounding texture in a matter of seconds, demonstrating that the visual system fills in information across regions where no information is available(1-5). Here we show that, in monkeys viewing a similar texture field with a hole, the responses of extrastriate visual neurons with receptive fields covering the hole increase gradually to a level comparable to that elicited by the same texture without a hole. The time course of these dynamic changes in activity parallels the time course of perceived filling-in of the hole by human observers, suggesting that this process mediates perceptual filling-in.
@article{ deWeerd_etal95,
  author = {Deweerd, P. and Gattass, R. and Desimone, R. and Ungerleider, L.
	G.},
  title = {Responses of cells in monkey visual cortex during perceptual filling-in
	of an artificial scotoma},
  journal = {Nature},
  year = {1995},
  volume = {377},
  pages = {731-734},
  month = {October},
  abstract = {WHEN we view a scene through one eye, we typically do not see the
	scotomas created by the optic disc and the blood vessels overlying
	the retinal surface. Similarly, when a texture field containing a
	hole is steadily viewed in peripheral vision (artificial scotoma),
	the hole appears to fill in with the surrounding texture in a matter
	of seconds, demonstrating that the visual system fills in information
	across regions where no information is available(1-5). Here we show
	that, in monkeys viewing a similar texture field with a hole, the
	responses of extrastriate visual neurons with receptive fields covering
	the hole increase gradually to a level comparable to that elicited
	by the same texture without a hole. The time course of these dynamic
	changes in activity parallels the time course of perceived filling-in
	of the hole by human observers, suggesting that this process mediates
	perceptual filling-in.},
  en_number = {3.3.4:52}
}
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