PSY 265 Chapter Notes - Chapter 3: Visual Perception, Psy, Agnosia
Document Summary
Light waves enter the eye, are focused and inverted by the lens, and are projected onto the retina. The retina has three layers of neurons: rods and cones, bipolar cells, and ganglion cells. The rods and cones are neurons stimulated by light beginning the process of vision. Patterns of neural firing from these are passed on to a second layer, the bipolar cells, which collect the messages and move them along to a third layer (the ganglion cells). The axons of the ganglion cells converge at the rear of the eye, forming the bundle of fibers that makes up the optic nerve. This signal exits the eye and continues through various structures, eventually projecting to the visual cortex of the occipital love, in the lower rear portion of the brain. The right visual field projects to the left half of the retina in both eyes, and this is then transmitted to the left hemisphere.
