PSYB57H3 Chapter Notes - Chapter 4: Visual Cortex, Akinetopsia, Visual Perception
Document Summary
Visual perception involves the processing of information conveyed by light energy that enters the eye. Light energy enters the eye through the cornea, which is the outer transparent tissue of the eye. After passing through the cornea, the light makes its way through a small opening called the pupil. The size of the pupil is controlled by the iris, the coloured tissue that surrounds it. Next, light is refracted through the lens, which focuses the light on the tissue at the back of the eye known as the retina. The retina contains light receptors called photoreceptors, which are most densely packed in the small region of the retina known as the fovea. Photoreceptors ! cells that capture light energy and transduce it into a neural signal. Fovea ! the region of the retina where photoreceptors are most densely packed. Neural signals are transmitted by neurons through the optic nerve to the brain.
