Learning auditory space: Generalization and Long-Term Effects

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Learning auditory space: Generalization and Long-Term Effects. / Mendonça, Catarina; Campos, Guilherme; Dias, Paulo; Santos, Jorge A.

In: PloS one, Vol. 8, No. 10, e77900, 2013, p. 1-14.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Mendonça, C, Campos, G, Dias, P & Santos, JA 2013, 'Learning auditory space: Generalization and Long-Term Effects' PloS one, vol. 8, no. 10, e77900, pp. 1-14. https://doi.org/10.1371/journal.pone.0077900

APA

Mendonça, C., Campos, G., Dias, P., & Santos, J. A. (2013). Learning auditory space: Generalization and Long-Term Effects. PloS one, 8(10), 1-14. [e77900]. https://doi.org/10.1371/journal.pone.0077900

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Mendonça, Catarina ; Campos, Guilherme ; Dias, Paulo ; Santos, Jorge A. / Learning auditory space: Generalization and Long-Term Effects. In: PloS one. 2013 ; Vol. 8, No. 10. pp. 1-14.

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@article{6cd674284bba425b8d8024d582059cef,
title = "Learning auditory space: Generalization and Long-Term Effects",
abstract = "BackgroundPrevious findings have shown that humans can learn to localize with altered auditory space cues. Here we analyze such learning processes and their effects up to one month on both localization accuracy and sound externalization. Subjects were trained and retested, focusing on the effects of stimulus type in learning, stimulus type in localization, stimulus position, previous experience, externalization levels, and time.MethodWe trained listeners in azimuth and elevation discrimination in two experiments. Half participated in the azimuth experiment first and half in the elevation first. In each experiment, half were trained in speech sounds and half in white noise. Retests were performed at several time intervals: just after training and one hour, one day, one week and one month later. In a control condition, we tested the effect of systematic retesting over time with post-tests only after training and either one day, one week, or one month later.ResultsWith training all participants lowered their localization errors. This benefit was still present one month after training. Participants were more accurate in the second training phase, revealing an effect of previous experience on a different task. Training with white noise led to better results than training with speech sounds. Moreover, the training benefit generalized to untrained stimulus-position pairs. Throughout the post-tests externalization levels increased. In the control condition the long-term localization improvement was not lower without additional contact with the trained sounds, but externalization levels were lower.ConclusionOur findings suggest that humans adapt easily to altered auditory space cues and that such adaptation spreads to untrained positions and sound types. We propose that such learning depends on all available cues, but each cue type might be learned and retrieved differently. The process of localization learning is global, not limited to stimulus-position pairs, and it differs from externalization processes.",
author = "Catarina Mendon{\cc}a and Guilherme Campos and Paulo Dias and Santos, {Jorge A.}",
year = "2013",
doi = "10.1371/journal.pone.0077900",
language = "English",
volume = "8",
pages = "1--14",
journal = "PloS one",
issn = "1932-6203",
number = "10",

}

RIS - Download

TY - JOUR

T1 - Learning auditory space: Generalization and Long-Term Effects

AU - Mendonça, Catarina

AU - Campos, Guilherme

AU - Dias, Paulo

AU - Santos, Jorge A.

PY - 2013

Y1 - 2013

N2 - BackgroundPrevious findings have shown that humans can learn to localize with altered auditory space cues. Here we analyze such learning processes and their effects up to one month on both localization accuracy and sound externalization. Subjects were trained and retested, focusing on the effects of stimulus type in learning, stimulus type in localization, stimulus position, previous experience, externalization levels, and time.MethodWe trained listeners in azimuth and elevation discrimination in two experiments. Half participated in the azimuth experiment first and half in the elevation first. In each experiment, half were trained in speech sounds and half in white noise. Retests were performed at several time intervals: just after training and one hour, one day, one week and one month later. In a control condition, we tested the effect of systematic retesting over time with post-tests only after training and either one day, one week, or one month later.ResultsWith training all participants lowered their localization errors. This benefit was still present one month after training. Participants were more accurate in the second training phase, revealing an effect of previous experience on a different task. Training with white noise led to better results than training with speech sounds. Moreover, the training benefit generalized to untrained stimulus-position pairs. Throughout the post-tests externalization levels increased. In the control condition the long-term localization improvement was not lower without additional contact with the trained sounds, but externalization levels were lower.ConclusionOur findings suggest that humans adapt easily to altered auditory space cues and that such adaptation spreads to untrained positions and sound types. We propose that such learning depends on all available cues, but each cue type might be learned and retrieved differently. The process of localization learning is global, not limited to stimulus-position pairs, and it differs from externalization processes.

AB - BackgroundPrevious findings have shown that humans can learn to localize with altered auditory space cues. Here we analyze such learning processes and their effects up to one month on both localization accuracy and sound externalization. Subjects were trained and retested, focusing on the effects of stimulus type in learning, stimulus type in localization, stimulus position, previous experience, externalization levels, and time.MethodWe trained listeners in azimuth and elevation discrimination in two experiments. Half participated in the azimuth experiment first and half in the elevation first. In each experiment, half were trained in speech sounds and half in white noise. Retests were performed at several time intervals: just after training and one hour, one day, one week and one month later. In a control condition, we tested the effect of systematic retesting over time with post-tests only after training and either one day, one week, or one month later.ResultsWith training all participants lowered their localization errors. This benefit was still present one month after training. Participants were more accurate in the second training phase, revealing an effect of previous experience on a different task. Training with white noise led to better results than training with speech sounds. Moreover, the training benefit generalized to untrained stimulus-position pairs. Throughout the post-tests externalization levels increased. In the control condition the long-term localization improvement was not lower without additional contact with the trained sounds, but externalization levels were lower.ConclusionOur findings suggest that humans adapt easily to altered auditory space cues and that such adaptation spreads to untrained positions and sound types. We propose that such learning depends on all available cues, but each cue type might be learned and retrieved differently. The process of localization learning is global, not limited to stimulus-position pairs, and it differs from externalization processes.

UR - http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0077900

U2 - 10.1371/journal.pone.0077900

DO - 10.1371/journal.pone.0077900

M3 - Article

VL - 8

SP - 1

EP - 14

JO - PloS one

JF - PloS one

SN - 1932-6203

IS - 10

M1 - e77900

ER -

ID: 799969