1. Sensation & Perception Third Week

2. How we see, hear, taste, and smell things, it requires that the mind actively process the information it receives. Our senses process the information unconsciously or consciously. Our perceptions of that information are key to how we relate ourselves to the surroundings.

3. Understanding the function, helps us to recognize human behavior where sensation and perception are faulty.

4. Stimuli - Receptor Cell - Transmit to Brain

5. Your interpretation of sensation may also change with time. Your senses need time to adapt the surrounding. I.e. the sound of AC, dogs hear siren earlier/faster than human.

6. Senses

7. Vision The perception of color, shape, light, and dark, and other details allow human t perceive beauty, appreciate nature, create things, and enjoy life more. Two theories of color vision: trichromatic theory and the opponent-process theory.

8. Trichromatic Theory Thomas Young in 1802 Revised by Hermann von Helmholtz All color is the result of the mixing of 3 primary colors: red, yellow, and blue.

9. The Opponent Process Theory Ewald Hering, 1870. The Afterimages, determined by cones in our eyes.

10. Taste The primary tastes: sweet, sour, bitter, salty, and umami (not yet decided), the taste produced by MSG. The taste buds (receptor cells on tongue). The older the age, the lesser it gets.

11. Smell It is perceived as a certain smell when the receptor transmit the message in to the base of the brain. Two functions of smell: detecting odors and communicate aggression (i.e. pheromones).

12. Touch Temperature, pressure, and pain. 3 receptors: thermoreceptors, mechanoreceptors, and nocireceptors. Create different individual pain tolerance. The Gate Control theory (Ronald Melzack & Patrick Wall in 1965)

13. Perception

14. Our perceptions determine how we interpret our surroundings.

15. Constancy Distance / depth Movement How do we make sense of what we’ve sensed?

16. Constancy 3 ways to measure constancy: size, shape, and brightness. Constancy stabilize our perception of the world. Test: walking towards an object.

17. Distance / Depth Binocular and Monocular create different perspectives in interpreting the surroundings. The difference is: precision. The key to perceiving world in 3D: Stereoscopic Vision.

18. Movement Apparent movement and Real movement. The illusions: phi phenomenon and stroboscopic movement.

19. Deception between sensation and perception?