Use the Following to Answer Questions

question 3

Multiple Choice

Use the following to answer questions
Scenario I
A psychologist interested in studying visual perception manipulates the brightness of a light in the imperceptible to very dim range.Each level of brightness (measured in lumens) is studied for 10 trials,and on each trial participants are asked if they can detect the light.Figure 4.1 shows hypothetical data from one participant.
Figure 4.1
-(Scenario I) In Figure 4.1,the absolute threshold of light perception is indicated by the letter:

• A)a.
• B)b.
• C)c.
• D)d.

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Definitions:

Waves

are disturbances or variations that travel through a medium, such as air, water, or vacuum, transferring energy from one point to another without permanent displacement of the particles of the medium.

Auditory Receptors

Specialized cells located in the inner ear that convert sound waves into electrical signals, which are interpreted by the brain as sound.

Cochlea

A spiral-shaped cavity of the inner ear that is primarily responsible for converting sound vibrations into nerve impulses.

Amplitude

In physics, this term describes the maximum extent of a vibration or oscillation, measured from the position of equilibrium.