What is BCL in audiogram?
What is BCL in audiogram?
Bekesy comfortable loudness (BCL) audiograms could be divided into six different patterns on the basis of the relation between interrupted and continuous tracings.
What is an audiometric threshold?
Clinically, audiologists define audiometric threshold (in a pure tone air conduction hearing test) as the level at which a test subject responds to a test signal (tone) 50% of the time on ascending trials. By definition, each point of the threshold curve becomes 0 dB HL.
How is audiometry diagnosed?
Pure tone testing (audiogram) — For this test, you wear earphones attached to the audiometer. Pure tones of a specific frequency and volume are delivered to one ear at a time. You are asked to signal when you hear a sound. The minimum volume required to hear each tone is graphed.
How do you read speech audiometry results?
The numbers on the top ranking from 125 to 8000, are indicators for sounds frequencies. The higher that number, the higher is the pitch of the sound. On the left side, you can see the units for loudness, which is measured in decibels. Just as an example: A face-to-face conversation is about 65 decibels.
What does UCL stand for in hearing test?
Beginning in the 1970s, studies have been conducted to determine if the Acoustic Reflex Threshold (ART) could predict Uncomfortable Loudness Level (UCL, also known as Loudness Discomfort Level, LDL).
What does UCL mean in a hearing test?
Uncomfortable Loudness Level
Uncomfortable Loudness Level (UCL) is defined as the hearing level at which a stimuli becomes uncomfortable for the listener.
How do you perform a threshold hearing test?
Pure tone audiometric air conduction testing is performed by presenting a pure tone to the ear through an earphone and measuring the lowest intensity in decibels (dB) at which this tone is perceived 50% of the time. This measurement is called threshold.
What is normal UCL?
Average UCL is similar for people with normal hearing or sensorineural hearing loss with thresholds below about 50 dBHL, with a gradual increase in UCL as hearing threshold increases (Kamm et al., 1978).
