Ch 4 Pure Tone Audiometry Flashcards Preview

CD 304 Introduction to Audiology > Ch 4 Pure Tone Audiometry > Flashcards

Flashcards in Ch 4 Pure Tone Audiometry Deck (14)
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0
Q

Thresholds

A

The level of hearing in an individual. This reading can be compared to established norms.

1
Q

Audiometer

A

An electronic device that tests pure tones of hearing.

2
Q

Masking

A

A technique used for the introduction of a noise into the non-test ear during audiometry.

3
Q

Calibration issues

A

Every ear is different, which creates the problem of finding and making an earphone that is properly calibrated to fit an individual’s ear.

4
Q

False negative response

A

When a person fails to indicate that they have heard a tone.

5
Q

False positive response

A

When a patient responds when no tone was presented.

6
Q

Pure tone average (PTA)

A

Average threshold levels for each ear at certain frequencies are measured.

7
Q

Variable pure tone average (VPTA)

A

This consists of the three poorest thresholds obtained at 500, 1000, 2000, & 4000 Hz. This can be more effective in estimating the communication impact of a hearing loss.

8
Q

Distortional bone conduction

A

The slight distortion of the skull that can alter the results of the bone conduction test.

9
Q

Inertial bone conduction

A

A form of inner ear stimulation caused by slight skull vibration, which causes the stapes to move in and out of the oval window.

10
Q

Osseotympanic bone conduction

A

When the air in the outer ear canal begins to vibrate and travel inside the ear to the tympanic membrane.

11
Q

Air-bone gap (ABG)

A

The difference between the air and bone conduction thresholds.

12
Q

Formula for Air Conduction

A

Air Conduction = Bone Conduction + Air-Bone Gap

13
Q

Tactile Response

A

When a patient feels vibration from a sound and responds to the vibration as a heard sound.