PSYCH 7A Lecture Notes - Lecture 5: Basilar Membrane, Cochlea, Afterimage

• School: UC-Irvine
• Department: Cognitive Sciences
• Course: PSYCH 7A
• Professor: John Hagedorn

Document Summary

Converting stimulus energies (sights, sounds, etc), into neural impulses that our brain can interpret: wavelength- the distance from one wave peak to the next. Short wavelength = bluish colors, high- pitched sounds. Horizontal measurement: amplitude (intensity)- affects the brightness of a color. Vertical measurement: the eye (cornea, pupil, iris, lens, retina, cornea- where light enters the eye. It helps to protect the eye and bends light to help focus: pupil- small, adjustable opening c, lens- focuses incoming rays onto the retina. Can change shape (accommodation: retina- light sensitive inner surface onto which light rays focus. Adjust the amount of light entering the eye: accommodation- process by which the lens changes shape, rods and cones- photoreceptors that react to the light waves, rods- black and white (achromatic) vision. They contain more visual pigment than cones and they converge onto a single bipolar cell: cones- color vision. They will send their information to their own bipolar cell.