Psych 3 Midterm Set #6

Abiltiy to detect presence of dimly lit objects

Ability to see details of objects

Eye muscles that control the shape of lenses

Process of adjusting configuration of lenses to bring images into focus on retina

Difference in position of retinal image of same object on the two retinas

Receptors-cells that are specialized to receive chemical, mechanical, or radiant signals from the environment; also proteins that contain binding site for particular NT horizontal cells-type of retinal neurons whose specialized function is lateral communication amacrine cells-type of retinal neuron whose specialized function is lateral communication retinal ganglion cells-retinal neurons whose axons leave the eyeball and form the optic nerve

Area on retina where bundle of axons of retinal ganglion cells penetrates receptor layer and leaves the eye as the optic nerve.

Central indentation of retina, which is specialized for high-acuity vision

Visual systems automatic use of information obtained from receptors around the blind spot, or scotoma, to create perception of missing portion of retinal image

Rods-visual receptors in retina that mediate achromatic, low-acuity vision under dim light cones-visual receptors in retina that mediate high acuity color vision in good lighting

Theory that cones and rods mediate photopic and scotopic vision, respectively

Photopic vision-cone-mediated vision, which predominates when lighting is good scotopic vision-rod-mediated vision, which predominates in dim light

Nasal-half of each retina next to the nose temporal-half of each retina next to the temple

Photopic-graph of sensitivity of cone-mediated vision to different wavelengths of light scotopic-graph of sensitivity of rod-mediated vision to different wavelengths of light

In intense light, red and yellow wavelengths look brighter than blue or green wavelengths of equal intensity; in dim light, blue and green wavelengths look brighter than red and yellow wavelengths of equal intensity