Interacoustics AA222 Additional Information

AA222 Additional Information Page 10
2.5 Reflex latency
The reflex latency test will be automatically performed with an activator intensity of 10 dB above the reflex
threshold. The test will show a pop-up and ask for the intensity of the activator in case:
• the reflex threshold cannot be found within the same protocol
• the required intensity is at or above the warning level as determined in the protocol settings
• the required intensity is above the maximum intensity that the transducer will permit for this particular
activator.
The default display of the reflex latency test shows the graphs of the latency measurements from the
selected ear. The following information is found in the display:
A
The first 300 ms of the tympanometric curve.
B
The table with measurement values which are only calculated if the measurement can be
completed.
• Level, stimulus level
• Pressure, the pressure at which the decay reflex is measured. Usually the decay test will
be set up to use the peak pressure of a preceding tympanogram
• Stimulus, stimulus frequency
• Latency value, the time interval between onset of the stimulus and the point where 10 % of
the reflex deflection value is reached. The reflex deflection value is measured as the
average of the deflection between 250 and 300 ms after stimulus onset

Interacoustics AA222 Specifications

General

Brand	Interacoustics
Model	AA222
Category	Measuring Instruments
Language	English