PSYC 2000 Chapter : Chapter 3
Document Summary
Vision: transduction, the transformation of stimulus energy into neural impulses, photo transduction, conversion of light energy into neural impulses that brain can understand, 1. Color: wavelength: determined by the length of the wave, distance between wave peaks, 2. Brightness: amplitude: determined by the height of the wave, how high or low the wave actually is, 3. Saturation: determined by whether or how much there is a mixture of wavelengths, intensity= amount of energy in a wave determined bu amplitude repeated. The lens: nearsightedness, nearby objects are seen more clearly than distant objects, farsightedness, faraway objects are seen more clearly. Retina: containing photoreceptor rods and cones plus layers of other neurons, bipolar cells receive messages from photoreceptors and transmit them to ganglion cells, which form the optic nerve. Thalamus: optic nerves connect to the thalamus in the middle of the brain and the thalamus to the visual cortex, brain"s sensory switchboard.
