Question

7 multiple choice 1 point
kenny could not distinguish a difference in volume between a 10 db sound and an 11.5 db sound. this means that which of the following was not met when the sound volume increased to 11.5 db from 10 db?
difference threshold
top-down processing
absolute threshold
bottom-up processing

8 multiple choice 1 point
sound waves hitting the ear drum and then ultimately stimulating hair cells in the cochlea is an example of which of the following?
bottom-up processing
sensation
perception
top-down processing

Explanation:

Analyze Question 7

The first question asks about Kenny's inability to distinguish a difference in volume between a \(10\text{ dB}\) sound and an \(11.5\text{ dB}\) sound.

• The difference threshold (also known as the just noticeable difference, or JND) is the minimum difference between two stimuli required for detection \(50\%\) of the time.
• Because Kenny cannot detect the difference between these two sound levels, the change did not exceed his difference threshold.
• Therefore, the difference threshold was not met.
• This relates directly to the core concepts of Sensation and Perception.

Analyze Question 8

The second question describes the physical process of sound waves hitting the eardrum and stimulating hair cells in the cochlea.

• This process represents the detection of physical energy from the environment by sensory receptors and its transduction into neural signals.
• By definition, this initial detection and conversion of physical stimuli is called sensation.
• Perception involves the subsequent organizing and interpreting of that sensory information.
• Therefore, the physical stimulation of the receptors is an example of sensation.

Answer:

Question 7

• difference threshold (Correct answer)
• top-down processing
• absolute threshold
• bottom-up processing

Question 8

• bottom-up processing
• sensation (Correct answer)
• perception
• top-down processing