Effects of methodological parameters on signal detection and frequency discrimination

Authors

  • S.M. Abel Hearing Res. Lab., Samuel Lunenfeld Res. Inst., Mount Sinai Hospital, Toronto, Ont., Canada
  • J.C. Tanny Hearing Res. Lab., Samuel Lunenfeld Res. Inst., Mount Sinai Hospital, Toronto, Ont., Canada

Keywords:

hearing, 2IFC paradigm, signal detection, stimulus duration, practice, auditory detection threshold, frequency discrimination limen, normal-hearing listeners, detection threshold, detection reaction time, 4IFC paradigm, acuity, 2 kHz

Abstract

This experiment was undertaken to determine the effects of variation in three methodological parameters, namely paradigm (2IFC vs 4IFC), stimulus duration (50 ms vs 300 ms) and practice (1 vs 6 replications) on the auditory detection threshold and frequency discrimination limen for a 2 kHz-pure tone, and the reaction time associated with each. The subjects were three normal-hearing listeners under the age of 30 years. In line with the predictions, an increase in the stimulus duration resulted in a significant decrease in the detection threshold and detection reaction time but did not affect discrimination. Also as expected, paradigm did not affect detection. However, the 4IFC paradigm reduced acuity for a change in frequency, possibly because the problem had changed to one of pattern recognition. Contrary to expectation, practice did not affect either sensory processing or choice reaction time

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Published

1994-06-01

How to Cite

1.
Abel S, Tanny J. Effects of methodological parameters on signal detection and frequency discrimination. Canadian Acoustics [Internet]. 1994 Jun. 1 [cited 2021 Sep. 21];22(2):19-25. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/829

Issue

Section

Technical Articles