PSYC 1000 Chapter Notes - Chapter 4.2: Temporal Lobe, Optic Chiasm, Interposition

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Benjamin Giguere

Document Summary

Convert radiation from the visual light spectrum to neural impulses. Light waves are perceived as specific colours based on wavelength. Hue refers to the colour of the light. Saturation refers to the density (dim or vibrant) Cornea is the clear layer that covers the front of the eye. Pupil regulates the amount of light entering the eye by changing size. Iris is a round muscle that adjusts the size of the pupil: also gives eye colour. Lens is a clear structure that focuses light to the back of the eye: changes shape to make sure light is refracted properly on back of eye, known as accommodation. Transduction occurs when light reaches receptors on the back of the eye: receptors are part of complex structure called retina. Ratio of cones to ganglion cells in fovea is 1:1. Ratio of rods to ganglion cells is 10:1.