Abstract:
:Exposure to synchronous but spatially disparate auditory and visual stimuli produces a perceptual shift of sound location towards the visual stimulus (ventriloquism effect). After adaptation to a ventriloquism situation, enduring sound shift is observed in the absence of the visual stimulus (ventriloquism aftereffect). Experimental studies report opposing results as to aftereffect generalization across sound frequencies varying from aftereffect being confined to the frequency used during adaptation to aftereffect generalizing across some octaves. Here, we present an extension of a model of visual-auditory interaction we previously developed. The new model is able to simulate the ventriloquism effect and, via Hebbian learning rules, the ventriloquism aftereffect and can be used to investigate aftereffect generalization across frequencies. The model includes auditory neurons coding both for the spatial and spectral features of the auditory stimuli and mimicking properties of biological auditory neurons. The model suggests that different extent of aftereffect generalization across frequencies can be obtained by changing the intensity of the auditory stimulus that induces different amounts of activation in the auditory layer. The model provides a coherent theoretical framework to explain the apparently contradictory results found in the literature. Model mechanisms and hypotheses are discussed in relation to neurophysiological and psychophysical data.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Magosso E,Cona F,Ursino Mdoi
10.1155/2013/475427subject
Has Abstractpub_date
2013-01-01 00:00:00pages
475427eissn
2314-6133issn
2314-6141journal_volume
2013pub_type
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journal_title:BioMed research international
pub_type: 杂志文章,评审
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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journal_title:BioMed research international
pub_type: 杂志文章,评审
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doi:10.1155/2018/8273581
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pub_type: 杂志文章,评审
doi:10.1155/2013/571912
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/2728952
更新日期:2019-11-25 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/303298
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journal_title:BioMed research international
pub_type: 杂志文章,评审
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doi:10.1155/2015/432645
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pub_type: 杂志文章
doi:10.1155/2020/6665974
更新日期:2020-12-22 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2018/8718053
更新日期:2018-01-09 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2017/4923640
更新日期:2017-01-01 00:00:00
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pub_type: 临床试验,杂志文章
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journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,评审
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journal_title:BioMed research international
pub_type: 临床试验,杂志文章
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pub_type: 杂志文章
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