It is a function of the brain that protects us from suffering from the blurry images that arise when we move our eyes. The perception works in the face of Saccadian eye movements, that is, when the eye is in a state of “Sackadian” movement, not in a state of normal “normal” eye movements. Acceding is the movement of an eye beyond the place where it rests, called the fixation point. When the motion is optimized for speed, the image inevitably blurs on the retina as it swings across the visual field. So why do we not normally experience this far-reaching retina image of our retina, which occurs in a phenomenon called saccadic omission? By using the ability to move stimuli quickly but evenly across a screen, we find that we are more sensitive to what is seen in rapid eye movements than in normal eye movements.
Blurred retinal images are not very useful, and our eyes have a mechanism that interrupts the processing of these images when they become blurred. Masking is supposed to protect our limited brain processing capacity from having to deal with otherwise useless blurred images. This does not mean that our vision is crippled by the Akkadian movement itself, but it does mask the blur. The functional mechanisms that normally prevent intrasaccadian activity from being perceived seem to be based on induced temporal mask effects. There are some nice experiments showing that the Saccadian masking is not completely related to saccade – saccades.
Previous studies have shown that short stimuli (1 ms) that minimize the lubrication of retinal photo receptors perceive sharp images, while 1 – 3 ms appear as blurred or blurred images. Intrasaccadic vision shows that static stimuli are effective in the dark, which is darkened by saccades. The fact that a static environment is perceived as moving when saccadic eye movements are made does not mean that we are blind due to saccades. One of the amazing things about perception is that the brain often perceives information that is not there. Spatial updating occurs when we see an object just before a saccade, although the saccade is no longer visible. This spatial update allows us to bring saccades back into the picture, even if the information is “not there.”
Neurologists believe that perception memory is updated because information collected during fixation can be compared and produced, which researchers say is a widely held false assumption that information passes from the saccade to the brain via the optic nerve. This type of visual working memory is the result of a combination of spatial and spatial actualization and the presence or absence of an object. This phenomenon, known as saccadic masking or saccadic suppression, is known to occur in the time before an Akkadian eye movement, which implies the presence or absence of an object in the field of vision of the eye at the same time. If the low spatial frequency is attenuated by “blurred” parts, the fine details of the image, which would otherwise be blurred by eye movements, remain unaffected.
The brain prevents this momentary blindness from being noticed by replacing it with an image of the next object seen. A person can observe saccadic mask effects by standing in front of a mirror and looking from one eye to the next. Saccadic masking is also the reason why at first glance the movements of the first and second hands of a watch seem to be longer than their next movement. Try looking in a mirror and watching your own eyes move from one point to the next while your brain masks them. When one tries to observe them as they move, one sees the movements of the eyes, but the spectator sees the movements of the eye.
It is thought that the brain does this by temporarily recording a copy of the eye movement of the command and comparing it to a remembered image of a target. It has been shown that our brain is able to take into account the eye movements in between, and it is also thought that it updates our perceptual memory so that the information collected during fixation can be compared and synthesized. The eye movement is clearly seen by external observers, but the eyes can never be observed in motion. Scientists believe this is the same as visual working memory, and that the spatial actualization of eye movements results from the brain’s ability to actualize our spatial eye movement.
This phenomenon is often used to explain the chronostasis that occurs after rapid eye movements. Since saccades are fast eye movements and are movements optimized for speed, movement over the visual field inevitably causes a blurring of the image on the retina. Blurring the retinal image is not very helpful, but the eye has a mechanism that interrupts processing of retinal images when they become blurred.