Deck 14: Vision and Perception

Question 1

Rods and cones respond to

A)visible light energy.
B)magnetic energy.
C)kinetic energy.
D)gamma energy.

Answer 1

visible light energy.

Question 2

Specialized cells of the retina convert the visual image to

A)the perceived image.
B)aqueous humor.
C)nervous impulses.
D)light.

Answer 2

nervous impulses.

Question 3

Scotopic vision is controlled by the

A)rods.
B)iris.
C)cones.
D)pupil.

Answer 3

rods.

Question 4

The ____ nerve transmits visual neurological information to the brain.

A)trigeminal
B)sciatic
C)auditory
D)optic

Question 5

To view the human body in the three dimensions, at least ____ image(s) is/are required.

A)one
B)two
C)three
D)four

Question 6

Select the TRUE statement from the choices given.

A)Because of the boundary effect, a 10-12% density change is visually perceptible.
B)An AP projection of the knee demonstrates the patella posterior to the femur.
C)Visual acuity is improved in low-light conditions.
D)Pattern recognition is very intensely studied as part of a radiologist's education.

Question 7

The art of controlling the image in space involves correct

A)part positioning.
B)central ray angle.
C)image placement.
D)all of the above

Question 8

The visual phenomenon involving the perception of extremely small or faint details is termed the

A)Adler effect.
B)boundary effect.
C)threshold detection.
D)Mach effect.

Question 9

Which effect occurs because the visual system has difficulty in perceiving contrast differences that are distant from one another?

A)Conklin effect
B)boundary effect
C)threshold detection
D)Mach effect

Question 10

In the human eye, the area of sharpest vision is located

A)in the cornea.
B)in the iris.
C)at the fovea centralis.
D)through the pupil.

Question 11

The phenomenon that occurs when the intensely bright light from a view box floods the eye directly is termed

A)eye motion.
B)veil glare.
C)viewing distance.
D)pattern recognition.

Question 12

All radiographic images are missing the critical diagnostic element of

A)depth.
B)length.
C)width.
D)none of the above

Question 13

Pattern recognition involves comparing mental images of ____ patterns to arrive at a diagnostic opinion.

A)histological
B)pathological
C)anatomical
D)all of the above

Question 14

The brightness of light intensity is expressed in

A)Roentgens.
B)Lamberts.
C)Seiverts.
D)Teslea.

Question 15

Which type of specialized photoreceptor cells are found in the retina?

A)lens
B)corneal
C)pupil
D)cones

Question 16

Which effect occurs when the eye perceives a change in density?

A)Ellis effect
B)boundary effect
C)threshold detection
D)Mach effect

Question 17

The radiographic image is a ____-dimensional object.

A)one
B)two
C)three
D)four

Question 18

The human body is

A)a three-dimensional object.
B)composed of countless structural lines.
C)composed of anatomy always in motion.
D)all of the above

Question 19

Photopic vision is controlled by the

A)rods.
B)iris.
C)cones.
D)pupil.

Question 20

Rods function best in which type of light?

A)yellow wavelength light
B)dim light levels
C)red wavelength light
D)bright, intense light levels

Question 21

Match the following terms with the correct statement or choice as they relate to vision and perception.
commonly used in forensic radiography

A)rods
B)veil glare
C)retina
D)Mach effect
E)scotopic vision
F)cones
G)edge enhancement
H)Grenz rays

Question 22

Match the following terms with the correct statement or choice as they relate to vision and perception.
occurs when intense, bright light floods the eye and reduces contrast perception

A)rods
B)veil glare
C)retina
D)Mach effect
E)scotopic vision
F)cones
G)edge enhancement
H)Grenz rays

Question 23

Match the following terms with the correct statement or choice as they relate to vision and perception.
responsible for vision in low light conditions

A)rods
B)veil glare
C)retina
D)Mach effect
E)scotopic vision
F)cones
G)edge enhancement
H)Grenz rays

Question 24

The skills of a quality radiologist are a combination of education, experiences, and a thorough understanding of disease and disease conditions as they are presented in diagnostic studies.Their ability to provide an accurate interpretation is premised on the assumption that all radiographers are performing procedures according to established protocols and procedures.If two technologists perform the same x-ray study differently, the impact upon the radiologist would be what?

Question 25

Match the following terms with the correct statement or choice as they relate to vision and perception.
occurs when the eye perceives a boundary

A)rods
B)veil glare
C)retina
D)Mach effect
E)scotopic vision
F)cones
G)edge enhancement
H)Grenz rays

Question 26

Match the following terms with the correct statement or choice as they relate to vision and perception.
night vision

A)rods
B)veil glare
C)retina
D)Mach effect
E)scotopic vision
F)cones
G)edge enhancement
H)Grenz rays