Question 1

Which of the following best describes the process of transduction in sensation?

Accepted Answer

The translation of external physical stimuli into neural code.

Question 2

According to Weber's Law, the just noticeable difference (JND) between two stimuli is:

Accepted Answer

A fixed percentage of the original stimulus intensity.

Question 3

Which formula correctly represents Weber's Law for just noticeable difference?

Accepted Answer

$$ \Delta I = kI $$

Question 4

A person is able to detect a difference between two weights only when the difference is at least 2 kg for a 20 kg reference weight. According to Weber's Law, what is the Weber fraction ($k$) for this scenario?

Accepted Answer

$$ k = 0.1 $$

Question 5

Which of the following is an example of top-down processing in perception?

Accepted Answer

Recognizing a familiar face in a crowd based on prior knowledge.

Question 6

In Signal Detection Theory, which two components are involved in making a decision about a stimulus?

Accepted Answer

Sensory process and decision process.

Question 7

Which of the following best illustrates the concept of perceptual set?

Accepted Answer

Failing to notice a gorilla in a basketball video due to focused attention on the players.

Question 8

Which Gestalt principle explains why we perceive objects that are close together as belonging to a group?

Accepted Answer

Proximity

Question 9

Which pathway in the brain is primarily responsible for object recognition?

Accepted Answer

"What" pathway (ventral stream)

Question 10

A patient is unable to recognize faces but can identify objects. This condition is known as:

Accepted Answer

Prosopagnosia

Question 11

Which theory of color vision proposes that color is produced by three types of cones sensitive to short, medium, and long wavelengths?

Accepted Answer

Trichromatic theory

Question 12

According to the opponent-process theory, which color pairs are processed as opposites?

Accepted Answer

Red-green, blue-yellow, black-white

Question 13

Which structure in the eye is responsible for focusing light onto the retina?

Accepted Answer

Lens

Question 14

If a person has damage to their dorsal stream, which ability is most likely to be affected?

Accepted Answer

Locating objects in space

Question 15

Which of the following best describes the absolute threshold?

Accepted Answer

The minimum intensity required for a stimulus to be detected 50% of the time.

Question 16

A person is presented with two tones: one at 100 Hz and another at 105 Hz. If the person can reliably detect the difference, what is the difference threshold?

Accepted Answer

$$ \Delta f = 5 	ext{ Hz} $$

Question 17

Which of the following is NOT a monocular depth cue?

Accepted Answer

Retinal disparity

Question 18

Which process allows the eye to adjust its lens shape to focus on objects at different distances?

Accepted Answer

Accommodation

Question 19

Which of the following best describes selective attention?

Accepted Answer

Focusing on one aspect of a scene while ignoring others.

Question 20

Which of the following is an example of bottom-up processing?

Accepted Answer

Perceiving a novel stimulus without any prior experience.

Sensation and Perception: Principles, Thresholds, Vision, and Image Segmentation

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