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Békésy tracking

Dear list:

we want to use Békésy tracking (with a constant change in frequency) to
measure absolute thresholds as a function of frequency in a study
involving tinnitus patients. The stimuli will be 300-ms tone bursts.

Now I do remember that for the level change a rate of 2 dB/s is used
frequently -- but what rate of change in frequency (oct/s) should one
opt for?

I'm sure that many of you have experiences with this procedure - which
parameters do you use?

Above that, is there anyone who would be willing to share some MATLAB
code for Békésy tracking - seems there's no need for re-inventing the

Best regards,


Dr. Daniel Oberfeld-Twistel
Universität Mainz
Institute of Psychology
Experimental Psychology

Staudingerweg 9
55128 Mainz

Phone ++49 (0) 6131 39 22423
Fax   ++49 (0) 6131 39 22480