Ch 3 Quiz.pdf

Question 1 1 / 1 pts The blind spot is located in the fovea. in the vitreous. where the optic nerve leaves the eye. at the optic chiasm. Question 2 1 / 1 pts In what condition are the peripheral rod receptors destroyed, leading to poorer peripheral vision? Macular degeneration Retinitis pigmentosa P...

Question 1 1 / 1 pts The blind spot is located in the fovea. in the vitreous. where the optic nerve leaves the eye. at the optic chiasm. Question 2 1 / 1 pts In what condition are the peripheral rod receptors destroyed, leading to poorer peripheral vision? Macular degeneration Retinitis pigmentosa Presbyopia Retinal hypopolarization Question 3 1 / 1 pts A receptor array in the Limulus is connected by the lateral plexus. Receptor “A” is located 5 receptors to the left of Receptor “B.” What stimulation will result in the greatest firing rate recorded from “A”? Stimulating A with 10 units of illumination Stimulating A with 10 units of illumination and stimulating B with 10 units Stimulating A with 10 units of illumination and stimulating B with 20 units Stimulating A with 5 units of illumination and stimulating B with 20 units Question 4 1 / 1 pts The stimuli used in the preferential looking technique of testing infant acuity are geons. gratings. greebles. graftings. Question 5 1 / 1 pts Which chemical reacts to light to start the process of transduction? Opsin Retinal Choroid Thyric acid Question 6 Which of the following is a reason for the poor acuity of newborns? The rods are not developed at birth. Newborns have too much visual pigment in the cones. A newborn’s rods have very narrow inner segments. The visual cortex of the newborn is only partially developed. 1 / 1 pts Question 7 1 / 1 pts Acuity develops to almost 20/20 vision by the time the infant is one month old. two months old. one year old. two years old. Question 8 1 / 1 pts Human lateral inhibition is most likely accomplished by end-stopped cells. extrastriate cells. bipolar cells. dissociative cells. Question 9 The isomerization of a single pigment molecule triggers what is best described as a chain reaction. ballistic expansion. hyperactive potential. hypopolarization wave. 1 / 1 pts Question 10 1 / 1 pts In what condition is the eyeball is too long, resulting in difficulty seeing far away objects? Axial myopia Refractive myopia Axial hyperopia Refractive hyperopia Question 11 1 / 1 pts Reading the eye chart in an optometrist’s office is a way to measure acuity. sensitivity. receptive fields. creativity. Question 12 A retinal condition that destroys the cones in the fovea is macular degeneration. retinitis pigmentosa. presbyopia. retinal hypopolarization. 1 / 1 pts Question 13 1 / 1 pts Our perception of the environment begins with energy. the proximal stimulus. the distal stimulus. cognition. Question 14 1 / 1 pts Convergence results in what changes in sensitivity and acuity? Both increased sensitivity and acuity Increased sensitivity and decreased acuity Both decreased sensitivity and acuity Decreased sensitivity and increased acuity Question 15 To isolate the rod portion of the dark adaptation curve, researchers use rod monochromats as the participants. present the stimulus foveally. present the stimulus in the periphery. use cone monochromats as participants. 1 / 1 pts Question 16 1 / 1 pts If we compare how the rods and cones converge onto other retinal neurons, we find that foveal cones converge more than the peripheral rods. rods and cones converge equally. rods converge more than foveal cones. horizontal cells converge onto the peripheral cones. Question 17 1 / 1 pts What has a wavelength of 10,000 meters on the electromagnetic spectrum? X-rays Radio wave Infrared rays Gamma rays Question 18 Cone spectral sensitivity is measured by having the observer look up and blink. look straight forward without blinking. look directly into a light. look to the side of a flashing light. 1 / 1 pts Question 19 1 / 1 pts The Purkinje shift occurs when reds appear brighter than blues in well-lit conditions, but blues appear brighter than reds in dim conditions. occurs when blues appear brighter than reds in well-lit conditions, and blues also appear brighter than reds in dim conditions. occurs when details that are easily seen in well-lit conditions become more difficult to see in low-light conditions. demonstrates the importance of eye movements in visual pigment regeneration. Question 20 Converging circuits with excitation and inhibition are associated most closely with which step of the perceptual process? Recognition Attention Neural processing The environmental stimulus 1 / 1 pts