Eliminating The Suppression of Image Displacement
If a target which is displaced during a saccade is not present at the end of the saccade, but reappears a short time later after a blank interval, subjects are able to regain the ability to successfully detect whether the target has moved. In these studies it was discovered that as the gap between the end of the saccade and the presentation of the shifted target increases, subjects become much more accurate at detecting displacement, and that with a gap of 150 ms participants had reached ceiling in their performance. Deubel and colleagues termed this the ‘blanking effect’ (Deubel et al., 1996; Deubel et al., 2004).
These results suggest that while extra-retinal information is present, and contains accurate localization information, it is only used when other information is not available – specifically retinal scene information. According to this model, three sources of information must be present in order to maintain visual constancy and successfully determine the direction of a target displacement: the target position prior to the saccade, extra retinal information, and a retinal error signal from the corrective saccade to determine the actual direction of target movement by comparing it to the efference copy and proprioceptive inflow (Deubel et al., 1996).
Read more about this topic: Saccadic Suppression Of Image Displacement
Famous quotes containing the words eliminating the, eliminating, suppression and/or image:
“Technology as the knack of eliminating the world as resistance,... the technologist’s worldlessness.... My mistake lay in the fact that we technologists try to live without death.”
—Max Frisch (1911–1991)
“A favorite of outdoor alcoholics, connoisseurs and Fundamentalists, these pills turn water into wine. In 10 minutes the most fetid swamp scum in the forest can become modest red, elusive and light on first taste, yet playful—one might say a trifle impudent—on the afterbite. Saves pack space by eliminating need for bulky corkscrew, decanter and bottles. Store pills on their sides in a cool dark place.”
—Alfred Gingold, U.S. humorist. Items From Our Catalogue, “Wine Pills,” Avon Books (1982)
“... peace produced by suppression is neither natural nor desirable.”
—Anna Julia Cooper (1859–1964)
“Who can wonder that the world is known
So well by man, since himself is one?
The same composure in his form is shewed,
And man’s the little image of the God.”
—Marcus Manilius (10 B.C.–A.D. 30)