Time-efficient multidimensional threshold tracking method

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Abstract

Traditionally, adaptive methods have been used to reduce the time it takes to estimate psychoacoustic thresholds. However, even with adaptive methods, there are many cases where the testing time is too long to be clinically feasible, particularly when estimating thresholds as a function of another parameter, such as in temporal masking curves or when characterizing auditory filters. Here we present a new method, the “grid” method, which adaptively varies multiple parameters during each experimental run. By changing the way the parameter-response space is sampled, the method increases the proportion of experimental time spent in the vicinity of the sought-after threshold curve. The resulting increase in time-efficiency is substantial and can make some measurements clinically feasible. Thresholds from temporal masking curves obtained with the grid method are compared with those from one of the most time-efficient standard methods (single-interval up-down adaptive method of Lecluyse, 2013). Overall, individuals' results from both methods are very highly correlated, but the grid method was an order of magnitude faster in estimating thresholds. The application of the grid method to other measurements, such as characterizing auditory filters, will also be discussed.
Original languageEnglish
JournalJournal of the Acoustical Society of America
Volume137
Issue number4
Pages (from-to)2228
ISSN0001-4966
DOIs
Publication statusPublished - 2015
Event169th Meeting of the Acoustical Society of America - Wyndham Grand Pittsburgh Downtown Hotel, Pittsburgh, Pa, United States
Duration: 18 May 201522 May 2015

Conference

Conference169th Meeting of the Acoustical Society of America
LocationWyndham Grand Pittsburgh Downtown Hotel
CountryUnited States
CityPittsburgh, Pa
Period18/05/201522/05/2015

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