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What is the threshold of hearing? a. The smallest amount of sound that a person can...

What is the threshold of hearing?

a. The smallest amount of sound that a person can detect

b. The sound that a person detects in a certain percentage (often 50%) of identical presentations

c. The smallest amount of sound a person can detect in two consecutive presentations

d. None of the above

Science   Anatomy-And-Physiology   
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Answer #1

The organ of hearing is ear. The inner ear contains cochlea that helps covert the sound wave to electrical impulse and is travelled to auditory cortex by auditory nerve for processing.
Ear can perceive sound with a certain level of frequency.
The level of sound above which it can be heard is known as the auditory threshold or threshold of hearing. A person cannot detect sound below this threshold. Normally, the auditory threshold is 0.0DB.
So the threshold of hearing is the smallest amount of sound that a person can detect.
Answer : a. The smallest amount of sound that a person can detect

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