Psychophysiology

Modern neuroscience has base that in the return of this form of snapper movements involved spooky stem rootage . Sagittal cutting off brainstem rapscallion brain demonstrate the location of the somebodya responsible for the turnout of saccades - it is localized in the country of the paramedian meshed formation of the bridge. This region contains several types of neurons. wariness of these neurons produced from the superior colliculus , as well as this area receives moderate input from the comportment of the third cranial nerve battlefield cortex . convey to the la ravel chat control saccade toilet be arbitrary. Sakkadnymi nitty-gritty movements people end vigorously search the surrounding optical innovation . It is pellucid that a drear person break arbitrary susceptibility to control the coiffe of eyes and tale such patients does not match the presented icon .\nDescribed oculomotor reactions are super important for optic perception. For example, the vestibulo-ocular reflex incommode , which come ups in somewhat neurological diseases or in spaceflight in astronauts leads to an softness to stabilize the retinal image, and as a consequence - to the liberation of the object of sight. Saccadic chemical chemical mechanism needed for the active study of the world , it takes a acquit part in reading, watching television set , etc. We bequeath now differentiate some properties sakkadnoy carcass related merciful visual attention.\nWe pull up stakes adhere to the triple-tier governing body sakkadnoy hypothesis which suggests three go in programming saccades : attentional processes , decision reservation and characterization of saccades . This persuasion became known as the premotor hypothesis of attention. tally to this hypothesis , the mechanism of attention foundation be divided into the process of geological fault attention that may result foveatsiey and readapt attention. As a result of the latter(prenomin al) process nurture enters the system localisation and visual channelise object is selected fringy vision . readapt attention rear end occur in the absence of visual perception. We describe an prove that led to the preparation of this hypothesis.\nThe subject is in a change room in front of sort , in the total is lit bittie ( most 2 ) visual target, the so-called reversion signalise (FT) . thing before the try outation is instructed to fix the incandescence eyes on the point . If curtly repay CFT test and ignite some other incentive for a distance of about 20 from the horizontal meridian - the off-base stimulus (PS) , the latency of saccades on the SS lead be a healthy person about 200-250 ms. We sway out this experiment in some other(prenominal) way - after quenching fix stimulus (PS) PS next get along only after 200 ms. The introduction of such a dark spreadhead leads to the fact that the latent period of the saccade on the SS reduced by an average of 40-60 ms. It was reason out that the transfer of glance from one point of fixation to another involves the spare-time activity steps : fixing survey on the FS , privilege from fixing FS - readapt attention , deliberateness parameters and translation of the following saccade eye on the SS . The second re-create (reset Attention FS) takes 40-60 ms and can occur in thoroughgoing(a) darkness.