PSY 323 test 2 - PERCEPT ION EXAM KEY EXAM 2 1. Light is...

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Unformatted text preview: PERCEPT ION EXAM KEY EXAM 2 1. Light is best described as a)electromagnetic rays that travel through the ether b) electromagnetic waves whose energy is emitted and absorbed in discrete amounts called photons(ANSWER) c)photon waves that propagate by molecular collisions d)particles of small mass called photons 2. One does not normally see the veins and arteries that supply the retina with blood because a) they are so small that they dont cast shadows b)there are no red blood cells in the retinal veins and arteries c) they are just behind the retina and so dont cast their shadows on the retina d) their shadows are stabilized on the retina and stabilized images are disregarded by the visual system (ANSWER) 3.When combining colors, blue and yellow create white with _____ color mixture but create green with___ color mixture. a)additive;subtractive (ANSWER) b)subtractive;additive c)additive; multiplicative d) multiplicative 4. An ON-center ganglion cell is best activated by a a) drifting sine wave b)shadow in the center of the receptive field c)ring of light covering the surround of the receptive field d)spot of light covering both the center and surround portions of the receptive field e)spot of light in the center of the receptive field (ANSWER) 5. Accommodation is the process in which the ___ of the eye changes in shape a) lens (ANSWER) b) pupil c)iris d)cornea e) sclera 6. In reaching the photopigment light passes through the structures of the eye in which of the following sequences? a)cornea-> lens-> ganglion cells->receptors (ANSWER ) b)cornea-> lens>receptors> ganglion cells c)lens> cornea>ganglion cells>receptors d)lens> cornea> receptors> ganglion cells 7. A shirt which appears red under white light is ____ the long wavelength (500-750mm) along the light spectrum a) absorbing b) polarizing c) reflecting (ANSWER) d)refracting 8. If both eyes are looking straight ahead, an object that is in the viewers left visual field a) be projected to the left hemisphere of the brain b) be projected to the r ight hemisphere (ANSWER) c) be projected to both hemispheres d) be projected between the two hemispheres 9. The axons of most retinal ganglion cells synapse at the a) optic nerve b) optic chiasma c) lateral geniculate nucleus (ANSWER) d) visual cortex 10. Rod photoreceptors are ___ in the fovea and are ____ in the periphery. Cone photoreceptors are ___ in the fovea and ____ in the periphery. a) present, concentrated, absent, present b)absent, present, present, concentrated c)present, concentrated, concentrated, absent d) absent, concentrated, concentrated, present (ANSWER) e) concentrated, present, absent, concentrated 11. What is the fundamental physical principle which allows a lens to form an image?11....
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This note was uploaded on 06/24/2011 for the course PSY 323 taught by Professor Staff during the Spring '08 term at University of Texas at Austin.

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PSY 323 test 2 - PERCEPT ION EXAM KEY EXAM 2 1. Light is...

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