Automatic cortical audiometer
Background
The first software module of the HEARLab system, the Aided Cortical Assessment (ACA) module, can be used to record the cortical responses to brief tone bursts, presented with either insert phones or a bone conductor.
The subject’s cortical threshold can be estimated manually by testing across a range of test levels, including levels where a cortical response is detectable, and levels where it is not detectable.
Detail
This project is focused on the development of a new software module for HEARLab that will automatically obtain cortical thresholds of a subject using brief tone bursts. Data will be collected within HEARLab and statistical analysis performed:
- if a response is detected with a preset significance value, data collection for that specific intensity will be stopped and the test for that specific frequency will be continued at a lower intensity
- if no response is detected after a preset number of accepted epochs, data collection will be stopped and the intensity for that specific frequency increased.
The optimal decision process of decreasing and increasing stimulus intensities is automated to reduce the total test time. The cortical threshold will be estimated as the lowest intensity with a response. This software will be licensed to Frye Electronics for distribution to new and existing HEARLab customers.




![Adjunct Prof Harvey Dillon [title]](http://hearingcrc.org/sites/default/files/imagecache/profile_260/content/people/profile-dillon.jpg)