PS102 Lecture Notes - Lecture 4: Occipital Lobe, Visual Cortex, Trichromacy
Document Summary
Theories of colour: opponent- process theory (hering, 1870, three colour pairs work to inhibit one another (when one colour in the pair can no longer take it, the other takes over, three cone types. Each type responds to two different wavelengths (red or green, blue or yellow, Black or white) explains afterimages: stare at certain colour, neural processes become fatigues, have rebound" effect with receptor responding with its opponent opposite reaction. Vision and the brain (figure 5-12: the optic nerve carries messages from each eye (visual field) to the visual cortex (occipital lobe)- arrangement of crossing is to use both left and right hemispheres of our brain. What and where pathways (figure 5-13: where= occipital cortex, what= temporal cortex, parietal cortex from the temporal cortex. Gestalt principles of perceptual organization: perceptual set: an example of top-down processing where individuals" expectations affect their perceptions (experiences effect our perceptions, governed by our perception set (individuals can interpret things differently)
