Short Increment Sensitivity Index - Interacoustics Affinity 2.0 Additional Information

Start simulating by clicking the Right and/or Left buttons corresponding to the ear to be simulated.
The text above each button will then change f rom Normal to ON.
During the simulation it is possible to adjust the volume of the signal using the dB HL
Decrease/Increase channel 1/channel 2 buttons.
Patient monitor text with HLS
Now clinicians can input text in the patient monitor, which can then be read by out loud while simulating the
hearing loss. This is to help with counselling and adding text which can be read out loud can make it easier
than asking someone to spontaneously say something. Please see section 1.7.2.7 f or more inf ormation on
how to setup the Patient Monitor.
1.7.9

Short increment sensitivity index

SISI is designed to test the ability to recognise 1 dB increase in intensity during a series of bursts of pure
tones presented 20 dB above the pure tone threshold f or the test f requency. It can be used to dif f erentiate
between cochlear and retro cochlear disorders as a patient with a cochlear disorder will be able to perceive
the increments of 1 dB, as where a patient with a retro cochlear disorder will not.
Required items:
• The Af f inity hardware
Licensed AC440 Audiometry module within your Af f inity
•
Calibrated Headphones or insert phones
•
A patient response button
•
Test procedure:
1) Open the AC440 and enter the SISI screen by selecting Menu | Tests | SISI.
2) Select Tone or Warble Tone in the channel 1 input list. If needed masking can be selected in the
channel 2 input dropdown list.
3) Select headphones or inserts in the channel 1/channel 2 output lists
4) Set the input level to 20 dB above threshold using the dB HL Decrease/Increase channel 1/channel
2 buttons or arrow keys on the PC keyboard.
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SISI requires an additional software license.
D-0004576-Q – 2022/05
Affinity/Equinox2.0 – Additional Information
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2.0 hardware with SISI f unctionality
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