A population study of the precedence effect

Saberi, Kourosh; Antonio, Joseph V.; Petrosyan, Agavni

doi:10.1016/j.heares.2004.01.003

Cited by 25 publications

(24 citation statements)

References 65 publications

(91 reference statements)

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“…Brown and Stecker, 2010;Stecker and Brown, 2010 . This result suggests that the mechanism of jitter-reduced onset weighting may be separate from the mechanism facilitating greater cue-averaging for ILD, an interpretation consistent with similar time courses of ITD and ILD sensitivity evidenced in some paradigms (e.g., studies of binaural adaptation, and different time courses of sensitivity evidenced in others (e.g., studies of the precedence effect, Krumbholz and Nobbe, 2002;Saberi et al, 2004;cf. Stecker and Brown, 2010).…”

Section: B Greater Cue-averaging For Ild Than Itdsupporting

confidence: 57%

“…A fundamental assumption of binaural adaptation is that lateralization is dominated by onset ITD and ILD at high modulation rates, while post-onset information contributes little to subjects' perception. Correspondingly, TWFs measured in normal-hearing listeners for ITD and ILD carried by highrate acoustic click trains (e.g., 800 Hz, Brown and Stecker, 2010) or in bilateral CI users for high-rate electrical pulse trains (e.g., 600 Hz, van Hoesel, 2008a) generally show high weights at onset and uniformly low weights for individual post-onset clicks, although these and other recent studies of temporal weighting of ITD and ILD (e.g., Saberi and Antonio, 2003;Saberi et al, 2004;Stecker and Brown, 2010) also suggested reduced onset dominance for ILD relative to ITD-a finding in conflict with the notion of equal binaural adaptation for ITD and ILD . The nature of differences in the time courses of ITD versus ILD sensitivity, including the common finding of significant individual differences in sensitivity across listeners, remains an area of great interest to us and others at present (cf.…”

Section: Introductionmentioning

confidence: 75%

“…Goupell et al, 2009), there are strong indications in the literature that the time course of processing of ITD and ILD diverges at one or more levels of the auditory system. For example, discrimination of ILD presented at signal offset appears to be relatively better than discrimination of ITD at signal offset ; see also Saberi et al, 2004). Additionally, TWFs for lateralization suggest that onset dominance is reduced for ILD relative to ITD in both bilateral CI users (van Hoesel, 2008a,b) and normal-hearing listeners .…”

Section: B Greater Cue-averaging For Ild Than Itdmentioning

confidence: 95%

“…The nature of differences in the time courses of ITD versus ILD sensitivity, including the common finding of significant individual differences in sensitivity across listeners, remains an area of great interest to us and others at present (cf. McFadden et al, 1973;Krumbholz and Nobbe, 2002;Saberi and Antonio, 2003;Saberi et al, 2004;van Hoesel, 2008a,b;Litovsky et al, 2010;Stecker and Brown, 2010;Brown and Stecker, 2010;see Sec. IV B).…”

Section: Introductionmentioning

confidence: 99%

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Temporal weighting functions for interaural time and level differences. II. The effect of binaurally synchronous temporal jitter

Brown

Stecker

2011

The Journal of the Acoustical Society of America

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Recent work has demonstrated that sensitivity to interaural time differences (ITD) carried by highrate cochlear implant pulse trains or analogous acoustic signals can be enhanced by imposing random temporal variation on the stimulus rate [see Goupell et al. (2009). J. Acoust. Soc. Am. 126, 2511Am. 126, -2521. The present study characterized the effect of such "temporal jitter" on normal-hearing listeners' weighting of ITD and interaural level differences (ILD) applied to brief trains of Gabor clicks (4 kHz center frequency) presented at nominal interclick intervals (ICI) of 1.25 and 2.5 ms. Lateral discrimination judgments were evaluated on the basis of the ITD or ILD carried by individual clicks in each train. Random perturbation of the ICI significantly reduced listeners' weighting of onset cues for both ITD and ILD discrimination compared to corresponding isochronous conditions, consistent with enhanced sensitivity to post-onset binaural cues in jittered stimuli, although the reduction of onset weighting was not statistically significant at 1.25 ms ICI. An additional analysis suggested greater weighting of ITD or ILD presented following lengthened versus shortened ICI, although weights for such "gaps" and "squeezes" were comparable to other post-onset weights. Results are discussed in terms of binaural information available in jittered versus isochronous stimuli.

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Section: B Greater Cue-averaging For Ild Than Itdsupporting

confidence: 57%

Section: Introductionmentioning

confidence: 75%

Section: B Greater Cue-averaging For Ild Than Itdmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temporal weighting functions for interaural time and level differences. II. The effect of binaurally synchronous temporal jitter

Brown

Stecker

2011

The Journal of the Acoustical Society of America

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“…Filter bandwidths were based on human auditory filter estimates measured in notched-noise (Glasberg and Moore, 1990). The filterbank was followed by half-wave rectification and square-law nonlinearity (Saberi et al, 2004;Shear, 1987). The signal output within each channel was weighted by a frequency-dependent function representing outer-and middle-ear attenuation.…”

Section: Discussionmentioning

confidence: 99%

Imperfect pitch: Gabor’s uncertainty principle and the pitch of extremely brief sounds

Hsieh

Saberi

2015

Psychon Bull Rev

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How brief must a sound be before its pitch is no longer perceived? The uncertainty tradeoff between temporal and spectral resolution (Gabor's principle) limits the minimum duration required for accurate pitch identification or discrimination. Prior studies have reported that pitch can be extracted from sinusoidal pulses as brief as half a cycle. This finding has been used in a number of classic papers to develop models of pitch encoding. We have found that phase randomization, which eliminates timbre confounds, degrades this ability to chance, raising serious concerns over the foundation on which classic pitch models have been built. The current study investigated whether subthreshold pitch cues may still exist in partial-cycle pulses revealed through statistical integration in a time series containing multiple pulses. To this end, we measured frequencydiscrimination thresholds in a two-interval forced-choice task for trains of partial-cycle random-phase tone pulses. We found that residual pitch cues exist in these pulses but discriminating them requires an order of magnitude (ten times) larger frequency difference than that reported previously, necessitating a reevaluation of pitch models built on earlier findings. We also found that as pulse duration is decreased to less than two cycles its pitch becomes biased toward higher frequencies, consistent with predictions of an auto-correlation model of pitch extraction.

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The Precedence Effect in Sound Localization

Brown

Stecker

Tollin

2014

JARO

110

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In ordinary listening environments, acoustic signals reaching the ears directly from real sound sources are followed after a few milliseconds by early reflections arriving from nearby surfaces. Early reflections are spectrotemporally similar to their source signals but commonly carry spatial acoustic cues unrelated to the source location. Humans and many other animals, including nonmammalian and even invertebrate animals, are nonetheless able to effectively localize sound sources in such environments, even in the absence of disambiguating visual cues. Robust source localization despite concurrent or nearly concurrent spurious spatial acoustic information is commonly attributed to an assortment of perceptual phenomena collectively termed "the precedence effect," characterizing the perceptual dominance of spatial information carried by the first-arriving signal. Here, we highlight recent progress and changes in the understanding of the precedence effect and related phenomena.

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A population study of the precedence effect

Cited by 25 publications

References 65 publications

Temporal weighting functions for interaural time and level differences. II. The effect of binaurally synchronous temporal jitter

Temporal weighting functions for interaural time and level differences. II. The effect of binaurally synchronous temporal jitter

Imperfect pitch: Gabor’s uncertainty principle and the pitch of extremely brief sounds

The Precedence Effect in Sound Localization

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