Presentation on theme: "Unit 4(C): Vision Mr. McCormick A.P. Psychology. Do-Now (Discussion) Raise your hand if you are either nearsighted or farsighted. What causes Nearsightedness."— Presentation transcript:
Do-Now (Discussion) Raise your hand if you are either nearsighted or farsighted. What causes Nearsightedness (Myopia) and Farsightedness (Hyperopia)?
Transduction Transduction: Conversion of one form of energy into another Transformation of stimulus energies, such as sights, sounds, and smells into neural impulses the brain can interpret
The Stimulus Input: Light Energy Visible Spectrum
The Stimulus Input: Light Energy Wavelength: The distance from the peak of one light or sound wave to the peak of the next Hue: Dimension of color that is perceived Determined by the wavelength of light E.g. green, blue
Wavelength (Hue) 400 nm 700 nm Long wavelengths Short wavelengths Violet IndigoBlue Green Yellow OrangeRed Different wavelengths of light result in different colors.
The Stimulus Input: Light Energy Intensity: The amount of energy in a light or sound wave Determined by the wave’s amplitude E.g. brightness (vision), loudness (hearing)
Intensity (Brightness) Blue color with varying levels of intensity. As intensity increases or decreases, blue color looks more “washed out” or “darkened.”
Accommodation Accommodation: The process by which the eye’s lens changes shape to focus near or far objects on the retina
Demonstration: Test Your Blind Spot Directions: Looking at your sheet, close your left eye, and fixate your right eye on the black dot. Move the page towards your eye and away from your eye. At some point the car on the right will disappear due to a blind spot.
Review When looking at an object, what determines the color and brightness that we perceive? Discuss the path in which light travels between entering the eye and reaching the brain. What is parallel processing? Differentiate between the Young-Helmholtz Trichromatic Theory and the Opponent- Process Theory of vision.
Homework Research Study Response #5: “Take a Long Look” (Pgs. 36-42) Unit 4 FRQ Unit 4 Quiz: “Sensation and Perception” (W) 11/16/11