Human cortical sensitivity to interaural level differences in low- and high-frequency sounds

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Interaural level difference (ILD) is used as a cue in horizontal sound source localization. In free field, the magnitude of ILD depends on frequency: it is more prominent at high than low frequencies. Here, a magnetoencephalography experiment was conducted to test whether the sensitivity of the human auditory cortex to ILD is also frequency-dependent. Robust cortical sensitivity to ILD was found that could not be explained by monaural level effects, but this sensitivity did not differ between low- and high-frequency stimuli. This is consistent with previous psychoacoustical investigations showing that performance in ILD discrimination is not dependent on frequency.


Original languageEnglish
Pages (from-to)EL190-EL193
JournalJournal of the Acoustical Society of America
Issue number2
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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