Question

Briefly discuss, in terms of physical sensation, how a visual object in the environment travels through the visual system to finally end up in the occipital lobe of the brain. Include the stops along the way (the parts of the visual system). How does the concept of perceptual constancy provide stability and consistency in our own individual worlds?

Answer 1

ANSWER :

We are able to see only that objects, from which reflected light enters into the eye and fall at the retina. In this process reflected light from object enters via cornea of eye then passes from pupil followed by lens and ends to fall on the yellow spot of retina (innermost sensitive layer). From where action potential generated in the photosensitve cells (rod cells) and conducts to occipital lobe of brain via optic nerves and understood the visible object.

The perceptual constancy of vision familiar us with actual shape, size and texture of objects regardless change in the light and distance. Hence, individuals become adaptive to live in the world.