Memory for the locations of environmental sounds

Martin, Russell L.; Flanagan, Patrick; McAnally, Ken I.; Eberle, Geoff

doi:10.1121/1.3589254

Cited by 7 publications

(7 citation statements)

References 51 publications

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“…Note that in this study, the listeners' task involved focusing on all sound sources simultaneously rather than on one of them at a time as in the Brungart et al (2005) and Simpson et al (2007) studies. Martin et al (2011) presented listeners with up to six sources of environmental sounds positioned around the listener in an AVR space. The sequence of 1 to 6 sounds was presented 1, 3, or 5 times, and the target sound was revealed after the presentation of the last sequence.…”

Section: Localization Of Multiple Sound Sourcesmentioning

confidence: 99%

Auditory Spatial Perception: Auditory Localization

Łȩtowski¹,

Letowski²

2012

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Section: Localization Of Multiple Sound Sourcesmentioning

confidence: 99%

Auditory Spatial Perception: Auditory Localization

Łȩtowski¹,

Letowski²

2012

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“…A set of HRIRs had been measured previously for each participant following the procedures described by Martin et al (2011). As described in the appendix, the fidelity of these HRIRs was evaluated and found to be satisfactory.…”

Section: Spatializationmentioning

confidence: 99%

Spatial release from speech-on-speech masking in the median sagittal plane

Martin

McAnally

Bolia³

et al. 2012

The Journal of the Acoustical Society of America

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Several studies have described a release from speech-on-speech masking associated with separation of target and masker sources in the median sagittal plane. Some have excluded the possibility that small differences between target and masker interaural time disparities can fully account for this release. This study explored the mechanisms underlying the spatial release from speech-on-speech masking that can be obtained in the absence of such differences. In one condition, interaural time disparities were removed from the nominal median-sagittal-plane, head-related impulse responses used to generate the virtual auditory space within which competing sentences were presented. In other conditions, interaural level and spectral disparities also were manipulated by presenting competing sentences monaurally or diotically after convolution with one ear's head-related impulse responses. It was found that substantial spatial release from masking can be obtained in the absence of any interaural disparities and that such disparities probably make a relatively minor contribution to spatial release from speech-on-speech masking in the median sagittal plane. It is argued that this release from masking is driven primarily by a reduction in informational masking that occurs when monaural information at one, or both, of the listener's ears facilitates differentiation of competing sentences that emanate from spatially separated sources.

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“…Several previous studies have shown that target localization can be influenced by stimuli preceding the target on the time scale of seconds. These studies examined various phenomena and their underlying mechanisms, including adaptation of the neural representation due to prolonged exposure to preceding stimuli (Carlile et al, 2001;Dahmen et al, 2010;Furukawa, 2005;Kashino and Nishida, 1998;Phillips and Hall, 2005), attentional cuing (Maddox et al, 2014;Maier et al, 2010;Sach et al, 2000), buildup of the precedence effect (Freyman et al, 1991), auditory grouping (Best et al, 2007;Kopčo et al, 2017), spatial memory (Martin et al, 2011), and attentional effects utilizing a priori information about the position of the target and maskers (Kopčo et al, 2010). The current study examines which of these phenomena and their underlying mechanisms might be related to CP.…”

Section: Introductionmentioning

confidence: 99%

Temporal characteristics of contextual effects in sound localization

Hládek

Tomoriová

Kopčo

2017

The Journal of the Acoustical Society of America

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Two experiments examined plasticity induced by context in a simple target localization task. The context was represented by interleaved localization trials with the target preceded by a distractor. In a previous study, the context induced large response shifts when the target and distractor stimuli were identical 2-ms-noise clicks [Kopčo, Best, and Shinn-Cunningham (2007). J. Acoust. Soc. Am. 121, 420-432]. Here, the temporal characteristics of the contextual effect were examined for the same stimuli. Experiment 1 manipulated the context presentation rate and the distractor-target inter-stimulus interval (ISI). Experiment 2 manipulated the temporal structure of the context stimulus, replacing the one-click distractor either by a distractor consisting of eight sequentially presented clicks or by a noise burst with total energy and duration identical to the eight-click distractor. In experiment 1, the contextual shift size increased with increasing context rate while being largely independent of ISI. In experiment 2, the eight-click-distractor induced a stronger shift than the one-click-distractor context, while the noise-distractor context induced a very small shift. These results suggest that contextual plasticity is an adaptation driven both by low-level factors like spatiotemporal context distribution and higher-level factors like perceptual similarity between the stimuli, possibly related to precedence buildup.

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Memory for the locations of environmental sounds

Cited by 7 publications

References 51 publications

Auditory Spatial Perception: Auditory Localization

Auditory Spatial Perception: Auditory Localization

Spatial release from speech-on-speech masking in the median sagittal plane

Temporal characteristics of contextual effects in sound localization

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