PSYC 221 Lecture Notes - Lecture 3: Incus, Neon Lighting, Quattron

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 221
• Professor: Richard Wright

Document Summary

Good understanding before we learn perception next week: processing stages - stimulus energy for seeing (stages in canvas, electromagnetic radiation that stimulates photoreceptors in eyeballs. Transduction: one form converted to another form, light energy converted to neural code, transducers - photoreceptors, e. g. hair in your ear. Iconic storage/memory: short term visual memory, e. g. waving plastic green neon light at night. Longer term memory: eyeball, contralateral organization - crossover, photoreceptors on our left eyeball are processed on our right cortex, vice versa. Inversion of retinal image (like camera: 3 layers of cells in our eye - most important is photoreceptors, photoreceptors embedded back of eyeball - rods & cones. Bipolar & retinal ganglion cells block photoreceptors. Embedded in the back because of blood. Night vision - rods -> not as clear. Colour sensitive, don"t work very well in the dark - cones c) bipolar & retinal ganglion cells. Sensitive to shorter wavelengths of light b) green c) red.