Rods and cones synapse with _____ cells, which then synapse with ____ cells.
Choose correct answer/s
ganglion; bipolar
bipolar; ganglion
amacrine; unipolar
amacrine; bipolar
To unlock the question
Question 42
Multiple Choice
Converging circuits with excitation and inhibition are associated most closely with which step of the perceptual process
Choose correct answer/s
recognition
attention
neural processing
the environmental stimulus
To unlock the question
Question 43
Multiple Choice
If we compare how the rods and cones converge onto other retinal neurons, we find that _____ .
Choose correct answer/s
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
To unlock the question
Question 44
Multiple Choice
Convergence results in _____ sensitivity and _____ acuity.
Choose correct answer/s
increased; increased
increased; decreased
decreased; decreased
decreased; increased
To unlock the question
Question 45
Multiple Choice
Reading the eye chart in an optometrist's office is used to measure _____ .
Choose correct answer/s
acuity?
sensitivity
receptive fields
creativity
To unlock the question
Question 46
Multiple Choice
Acuity is better in the _____ than in the _____ .
Choose correct answer/s
periphery; fovea
optic disk; fovea
optic disk; cornea
fovea; periphery
To unlock the question
Question 47
Multiple Choice
The difficulty of reading under dim light conditions can be explained by _____ .
Choose correct answer/s
the increased sensitivity of cones under low light conditions
the increased acuity of cones under low light conditions
the fact that rod functioning predominates during dark adaptation, resulting in poor acuity
the fact that cone functioning predominates during dark adaptation, resulting in poor acuity
To unlock the question
Question 48
Multiple Choice
The stimuli used in the preferential looking technique of testing infant acuity are _____ .
Choose correct answer/s
geons
gratings?
greebles
graftings
To unlock the question
Question 49
Multiple Choice
Acuity develops to almost 20/20 vision by the time the infant is _____ .
Choose correct answer/s
one month old
two months old
one year old
two years old
To unlock the question
Question 50
Multiple Choice
Which of the following is a reason for the poor acuity of newborns
Choose correct answer/s
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.
To unlock the question
Question 51
Essay
Name and define three kinds of focusing problems.
To unlock the question
Question 52
Essay
Discuss the major differences between the rods and the cones. (b) Describe two retinal disorders that differentially affect the rods and the cones.
To unlock the question
Question 53
Essay
What is the "blind spot" (b) Discuss two reasons why we are not usually aware of the blind spot.
To unlock the question
Question 54
Essay
Draw a graph (with appropriate axis labels) of the dark adaptation curve. (b) Describe the methodology used to isolate the rod component of the curve, and the cone component.
To unlock the question
Question 55
Essay
What are the basic properties of action potentials
To unlock the question
Question 56
Essay
Describe the process of synaptic transmission. Include in this description the differences between excitatory and inhibitory transmitters.
To unlock the question
Question 57
Essay
Using words and/or diagrams, describe circuits with (a) no convergence and (b) convergence.
To unlock the question
Question 58
Essay
In words and/or diagrams, discuss why convergence of the rods results in increased sensitivity, but decreased acuity. (b) In words and/or diagrams, discuss why the lack of convergence in the foveal cones results in decreased sensitivity, but increased acuity.
To unlock the question
Question 59
Essay
Describe how preferential looking and visual evoked potentials technique have been used to study infant perception.