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The development of perceptual averaging: Efficiency metrics in children and adults using a multiple-observation sound-localization task

Jones, PR; (2018) The development of perceptual averaging: Efficiency metrics in children and adults using a multiple-observation sound-localization task. The Journal of the Acoustical Society of America , 144 (1) pp. 228-241. 10.1121/1.5043394. Green open access

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Abstract

This study examined the ability of older children to integrate spatial information across sequential observations of bandpass noise. In experiment I, twelve adults and twelve 8–14 yr olds localized 1–5 sounds, all presented at the same location along a 34° speaker array. Rate of gain in response precision (as a function of N observations) was used to measure integration efficiency. Children were no worse at localizing a single sound than adults, and—unexpectedly—were no less efficient at integrating information across observations. Experiment II repeated the task using a Reverse Correlation paradigm. The number of observations was fixed (N = 5), and the location of each sound was independently randomly jittered. Relative weights were computed for each observation interval. Distance from the ideal weight-vector was used to index integration efficiency. The data showed that children were significantly less efficient integrators than adults: only reaching adult-like performance by around 11 yrs. The developmental effect was small, however, relative to the amount of individual variability, with some younger children exhibiting greater efficiency than some adults. This work indicates that sensory integration continues to mature into late childhood, but that this development is relatively gradual.

Type: Article
Title: The development of perceptual averaging: Efficiency metrics in children and adults using a multiple-observation sound-localization task
Open access status: An open access version is available from UCL Discovery
DOI: 10.1121/1.5043394
Publisher version: https://doi.org/10.1121/1.5043394
Language: English
Additional information: This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: integration efficiency, multiple observations, sound localization, reverse correlation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Ophthalmology
URI: https://discovery.ucl.ac.uk/id/eprint/10055592
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