Psychophysical evidence for adaptation of central auditory processors for interaural differences in time and level

Phillips, Dennis P.; Hall, Susan E.

doi:10.1016/j.heares.2004.11.001

Cited by 59 publications

(89 citation statements)

References 44 publications

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“…The first question raised by these experiments is whether the aftereffect reflects a criterion shift at the decision stage or true sensory adaptation. Against the criterion interpretation, Kashino and Nishida (1998), Phillips and Hall (2005), and Vigneault-MacLean et al (2007) showed that the aftereffect is frequency-specific: that is, preceding sound and test tone must share the same frequency region for the aftereffect to occur. The second question is whether the effect of the preceding sound is location-or cue-specific.…”

Section: Introductionmentioning

confidence: 98%

“…After prolonged exposure to a preceding sound at a fixed location, an auditory spatial aftereffect can be observed (Thurlow and Jack 1973;Kashino and Nishida 1998;Dong et al 1999;Carlile et al 2000;Phillips and Hall 2005;Vigneault-MacLean et al 2007). In all of these studies, the apparent location of the test sound is shifted away from the preceding sound's position.…”

Section: Introductionmentioning

confidence: 99%

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Context Effects in the Discriminability of Spatial Cues

Maier

McAlpine

Klump

et al. 2009

JARO

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In order to investigate whether performance in an auditory spatial discrimination task depends on the prevailing listening conditions, we tested the ability of human listeners to discriminate target sounds with and without presentation of a preceding sound. Target sounds were either lateralized by means of interaural time differences (ITDs) of +400, 0, or −400 μs or interaural level differences (ILDs) with the same subjective intracranial locations. The preceding sound was always lateralized by means of ITD. This allowed for testing whether the effects of a preceding sound were location-or cue-specific. Preceding sounds and target sounds were randomly paired across trials. Listeners had to discriminate whether they perceived the target sounds as coming from the same or different intracranial locations. Finally, stimuli were selected so that, without any preceding sound, ITD and ILD cues were equally discriminable at all target lateralizations. Stimuli were 800 Hz-wide, 400-ms duration bands of noise centered at 500 Hz, presented over headphones. The duration of the preceding sound was randomly selected from a uniform distribution spanning from 1s to 2s. Results show that discriminability of both binaural cues was improved for midline target positions when preceding sound and targets were co-located, whereas it was impaired when preceding sound and targets came from different positions. No effect of the preceding sound was found for left or right target positions. These results are compatible with a purely bottom-up mechanism based on adaptive coding of ITD around the midline that may be combined with top-down mechanisms to increase localization accuracy in realistic listening conditions.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Context Effects in the Discriminability of Spatial Cues

Maier

McAlpine

Klump

et al. 2009

JARO

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“…In vision research, this approach was used to investigate neurons tuned to colour, motion, spatial frequency and orientation, to name but a few stimulus dimensions (for reviews see Clifford et al, 2007;Webster, 2011). Similarly, adaptation has been extensively employed in auditory (Carlile, Hyams, & Delaney, 2001;Kay & Matthews, 1972;Phillips & Hall, 2005), somatosensory (Hahn, 1966;Hollins, Sliman, & Washburn, 2001;Miyazaki, Yamamoto, Uchida, & Kitazawa, 2006), and olfactory research (Dalton, 2000;. Despite its widespread use, there are some limitations to this paradigm.…”

Section: Introductionmentioning

confidence: 99%

Auditory frequency perception adapts rapidly to the immediate past

Alais

Orchard-Mills

Burg

2014

Atten Percept Psychophys

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Frequency modulation is critical to human speech. Evidence from psychophysics, neurophysiology, and neuroimaging suggests that there are neuronal populations tuned to this property of speech. Consistent with this, extended exposure to frequency change produces direction specific aftereffects in frequency change detection. We show that this aftereffect occurs extremely rapidly, requiring only a single trial of just 100-ms duration. We demonstrate this using a long, randomized series of frequency sweeps (both upward and downward, by varying amounts) and analyzing intertrial adaptation effects. We show the point of constant frequency is shifted systematically towards the previous trial's sweep direction (i.e., a frequency sweep aftereffect). Furthermore, the perception of glide direction is also independently influenced by the glide presented two trials previously. The aftereffect is frequency tuned, as exposure to a frequency sweep from a set centered on 1,000 Hz does not influence a subsequent trial drawn from a set centered on 400 Hz. More generally, the rapidity of adaptation suggests the auditory system is constantly adapting and "tuning" itself to the most recent environmental conditions.

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“…In part, the model is based on neurophysiological observations of the spatial sensitivity of cortical neurons: Of the neurons sensitive to source location, most are broadly tuned to the contralateral acoustic hemifield, with smaller proportions tuned to the ipsilateral hemifield or to near-midline azimuths (Stecker et al, 2005;Lee and Middlebrooks, 2013;Zhou and Wang, 2012). In concurrent psychophysical studies, Phillips and Hall (2005) and Dingle et al (2012Dingle et al ( , 2013) studied human sound lateralization judgments for dichotic tones lateralized on the basis of interaural time (ITD) or level differences (ILDs). Using selective adaptation paradigms, they provided evidence that intracranial azimuth judgments are based on the relative outputs of three neural-perceptual channels with broad tuning to the left and right acoustic hemifields, and to the midline.…”

Section: Introductionmentioning

confidence: 99%

Selective adaptation in sound lateralization is not due to a repulsion effect

Phillips

Mew

Hall

2014

The Journal of the Acoustical Society of America

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Selective adaptation studies in dichotic sound lateralization have contributed to a three-channel model of lateralization mechanisms. They usually have employed highly-lateralized adaptor stimuli, and the expression of the selective adaptation is the perceptual shift of test tone locations away from that of the adaptor. The present study employed modestly lateralized adaptors so that any repulsion mechanism could be visualized in distorted position judgments for test tones on both sides of the adaptor stimuli. Comparison of position reports for tones lateralized using interaural time differences before and after selective adaptation provided no evidence for a repulsion effect.

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Psychophysical evidence for adaptation of central auditory processors for interaural differences in time and level

Cited by 59 publications

References 44 publications

Context Effects in the Discriminability of Spatial Cues

Context Effects in the Discriminability of Spatial Cues

Auditory frequency perception adapts rapidly to the immediate past

Selective adaptation in sound lateralization is not due to a repulsion effect

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