Discrimination of interaural differences of level as a function of frequency

William A. Yost, Raymond H. Dye

Research output: Contribution to journalArticlepeer-review

126 Scopus citations


Discrimination of interaural differences of level (IDLs) was measured for pure tones as a function.of frequency and as a function of the interaural difference of phase or level of a standard. Varying the interaural difference of the standard was assumed to change the lateral position of its intracranial image. Threshold IDLs were approximately constant over a frequency range from 200-5000 Hz, except in a region near 1000 Hz where they were slightly elevated. Thresholds increased as the value of the standard interaural differences of phase or level increased, implying that interaural resolution declines as the lateral image moves away from midline. The results are generally consistent with the predictions of current models of lateralization, but additions to these models are required in order for them to account for the slight frequency dependence of threshold IDLs.

Original languageEnglish (US)
Pages (from-to)1846-1851
Number of pages6
JournalJournal of the Acoustical Society of America
Issue number5
StatePublished - May 1988
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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