Effect of stimulus type and pitch salience on pitch-sequence processing

Carcagno, Samuele and Micheyl, Christophe and Cousineau, Marion and Pressnitzer, Daniel and Demany, Laurent (2018) Effect of stimulus type and pitch salience on pitch-sequence processing. Journal of the Acoustical Society of America, 143 (6). pp. 3665-3675. ISSN 0001-4966

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Abstract

Using a same-different discrimination task, it has been shown that discrimination performance for sequences of complex tones varying just detectably in pitch is less dependent on sequence length (1, 2, or 4 elements) when the tones contain resolved harmonics than when they do not [Cousineau, Demany, and Pessnitzer (2009). J. Acoust. Soc. Am. 126, 3179-3187]. This effect had been attributed to the activation of automatic frequency-shift detectors (FSDs) by the shifts in resolved harmonics. The present study provides evidence against this hypothesis by showing that the sequence-processing advantage found for complex tones with resolved harmonics is not found for pure tones or other sounds supposed to activate FSDs (narrow bands of noise and wide-band noises eliciting pitch sensations due to interaural phase shifts). The present results also indicate that for pitch sequences, processing performance is largely unrelated to pitch salience per se: for a fixed level of discriminability between sequence elements, sequences of elements with salient pitches are not necessarily better processed than sequences of elements with less salient pitches. An ideal-observer model for the same-different binary-sequence discrimination task is also developed in the present study. The model allows the computation of d' for this task using numerical methods.

Item Type: Journal Article
Journal or Publication Title: Journal of the Acoustical Society of America
Additional Information: C 2018 Acoustical Society of America
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3102
Subjects:
Departments: Faculty of Science and Technology > Psychology
ID Code: 126592
Deposited By: ep_importer_pure
Deposited On: 26 Jul 2018 12:46
Refereed?: Yes
Published?: Published
Last Modified: 17 Feb 2020 04:04
URI: https://eprints.lancs.ac.uk/id/eprint/126592

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