Bradley Review Questions Flashcards
The inability to recognize faces is referred to as
Prosopagnosia
Which of the following does not describe the visual pathway that processed motion
Temporal processing stream
Optic ataxia may result from damage in which cortical processing stream?
Dorsal-dorsal
This form of attention alerts you when another vehicle swerves into your lane is
Bottom up
Which of the following clinical conditions may be caused by abnormal connections between cortical modules
Synaesthesia
Damage to inferotermporal cortex May result in deficits in analyzing
Form
Akinetopsia May results from damage to which area of the brain?
V5
In preattentive processing, as the number of distractions increases, the ability to detect the salient objects generally
Remains the same
Shifts in attention have been demonstrated to alter the responses of cells located in
V4
Which of the following is an example of top down attention
Looking for a friend in a crowd of people
Searching for quarters in a drawer full of loose change
Prosopagnosia is most likely be accompanied by
Achromatopsia
Which of the following cortical areas is not part of the ventral processing stream
V5
A patient with which of the following conditions manifests an inability to perceive two objects simulataneously
Simultagnosia
The visual hallucinations experienced in Charles bonnet syndrome
Have been compared to phantom limb syndrome
Perceptual learning has been
Used in elderly people and used to treat amblyopia
A subject views two patches of ligh. One patch consists of an additive mixture of 475 and 510nm, and the other patch consists of an additive mixture of 490 and 520nm. By adjusting the intentisited of each wavelengths thatconstitute these patches, the subject is able to perfectly match the two patches. The subjects vision must be
Could be either monochromatic, dichromatic, or trichromatic
Which of the following cone photopigment evolved most recently?
Chlorolabe
Which of the following is not a perceptual attribute of color
Radiance
A monochromatic stimulus of which of the following wavelgnth is least saturated?
570
The five pairs of wavelgnth listed below are viewed by a person with trichromatic vision. Which pair contains wavelgnth that appear most similar to each other
640nm and 645nm
A sample has chromaticity coordinate of y=0.6 and z=0/1. The dominant wavelgnth of this sample is closest to
550
The dominant wavelength of a mixture that consists of 66% of 490nm and 33% of 580nm is closest to
500
A mixture of equal amounts of 490 and 560nm has a dominant wavelength of
510
When viewed by a monchromat I, two patches of light look identical to each other, we can conclude that the two patches
Result in the same number of quantal absorptions
The excitation of a purity of a mixture that consists of 75% of 500nm and 25% of 560nm is closest to
0.75
Will be the closest to 500
The complement of 580nm is closest to
480
THE EXCITATION PURITY THAT CONSISTS of 50% of 490nm and 50% of 580nm is closest to
0.2
Which of the following hues cannot be produced by monochromatic white
Purple
A rod monochromat views two patches of light. One patch consist of a single wavelgnth 450nm, and the other patch consists of an additive mix of three wavelengths (425, 475, 510). If the subject is allowed to adjust independently based on intensity, what will happen?
The subject will be able to match the two patches after adjusting the intensity of the wavelgnth
As the intensity of a stimulus of 540nm decreases, it appears more
Green
In the primate retina, which of the following are the most distal color opponent color cells
Bipolar
The M cone opsin gene is located on which chromosome
X
According to the color opponent theory, the red green channel is able to encode which colors?
Red and green
Which neurons manifest blue-yellow opponency
Konio
As lighting conditions, chance the colors of illuminated objects tend to
Remain constant
A yellow background is used when performing short wavelgnth automated perimetry because this background
Supresses the M and L cones de
According to Kollners rule ARMD is most likely to result in which type of color vision defect
Tritan
A patient with deutanamolous trichromacy adjusts the nagel anomaloscope so that the mixture and test fields match each othe. He subsequently stares at a large green light and then views his original match. He most likely will report that
The two fields remain perfectly matched to each other
Screening for RG color vision anomalies in children bc such defects could
Affect performance on color coded school lessons
Which of the following pairs of colors is least likely o be confused in someone with a duetan anomaly
Red and blue
A patient with protanopia outs trichromacy makes a match on the nagel anamosloce. When viewed by a normal trichromat, the mixture field may appear
Red
A pt with which of the following color vision definceic is most likely to have recent history of color naming errors?
Tritan
Which of the following pair of wacvebngltns seem the most similar in protanopia
540-545nm
As the mixture field of the nagel anamolascope is adjusted
Luminance remains constant
For a patient with deuteranomalous trichromacy our best guess as to the location of the peak of his her abnormal M cone absorption is
540
A women’s mother has a deutan colro vision anomaly, and her father and husband have a normal colro vision. What percentage of their sons are expected to have a color vision anomaly?
50%
The fovea of a person with RG dichromacy contains how many types of photopigments
One
A person with a monchromacy compares his vision when looking through a red filter to his vision without a red filter. Using the red filter in this way, this individual will function as is he has
Two photogpiohments
A person with protanopia is presented with two patches of light. One patch consists of 560nm and the other of 600nm. By proper adjustment of the intensities, this individual can match these two patches so that they appear to have the same
Brightness, hue, and saturation
A patient with protanopia matches 670nm to 590nm in an anomaloscope. When viewed by a person with normal color vision, the 590nm will appear
Dimmer than the 670nm
The expected VA for an adult with deuteranopia (inherited) is closest to
20/20
Pseudoisochromatic plate tests do not differentiate between which type of color vision anomalies
Deuteranopia and deuteranomalous
Protanopia and protanomaly
Which of the following color vision tests is best suited to assess a patient suspected of having outer retinal disease
D-15
A child with normal VA fails a PIP test. The most likely diagnosis
Anamalous trichromacy
Whic etype of color visio anomaly is least likely to be the same in each eye
Tritan
