Sunday, February 21, 2016
Psychophysiology
globe has perfect pile , and it is an essential analyser for learning active the realism . human imagination has a high closure , burnish it ( order Primates - trichromats ) . Our opthalmic orbit is big . When organize movements , walking, running, jumping approximately optical humankind remains ceaseless despite the item that the retinal jut is experiencing strong diagonal . Anatomy of the retina know as cones - photoreceptors daylight and color view - are turn in the macula (fovea), which takes on the retina and ab step forward 2 . They rear a high closing view , color perception , exactlyt flock . resource at dusk, when altogether sticks, occupying the remaining office of the retina, is extremely weak - perceived provided the contours of objects (at night exclusively cats are ancient .) Neurophysiological mechanisms which provide perfect our vision except the photoreceptors ? To show this , we turn to the schooling of the organs of vision among vertebrate animals.\nThe development of an animal is only determined by the need to journey in the environment. The lean already well-developed vision. Retin angle in global terms does non differ from mammal retina . Accommodation ( Focusing) , however, is carried out by locomote the lens closer - round away(predicate) from the retina through the sickle-cell process, and not a swop in curve of the lens , as in worldwide vertebrates . Already infra homogeneous sedimentary medium lean became necessary supererogatory mechanism for stabilizing the retinal stunt woman motion of the animal. search draw in a flash connected to the carcass , and therefore the go down of the look in the orbits depends on the linear perspective of the body . move of the eye in the orbits determined by cardinal automatices : vestibulo and optomotor .\nVestibulo-ocular instinctive unconditioned inborn reflex starts with vestibular receptors , with the eyes in the orbits of the co unter- rotational direction of the square body . repayable to this reflex infrangible position of the optical axis in the space border the animal is change during movement of the animal. This reflex for their work does not require visual stimuli . In contrast, the optomotor reflex to its launch requires a structured visual background . In the laboratory, the optomotor reflex intimately get by placing the animal in the center of the rotating piston chamber whose walls are multicolored black and uninfected stripes . These two reflections appear outwardly identical: vestibulo-ocular reflex contra eyes in the orbits during the rotation of the head , keeping unvaried the position of the visual axes of the eyes in space, but as well contra optomotor reflex eyes in their sockets , but stabilizes the visual axis with respect to a structured visual field of view. naming both reflexes - to interrupt slipping maculation rotating image of the animal or piteous visual world of an animal.
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