Skip to main content
bioRxiv
  • Home
  • About
  • Submit
  • ALERTS / RSS
Advanced Search
New Results

Differential Neural Encoding of Sound under Visual Attention is Shaped by Audiovisual Precision and Unimodal Uncertainty Priors

View ORCID ProfileF. Cervantes Constantino, T. Sánchez-Costa, G.A. Cipriani, View ORCID ProfileA. Carboni
doi: https://doi.org/10.1101/2020.07.30.229948
F. Cervantes Constantino
1Universidad de la República, Montevideo, Uruguay
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for F. Cervantes Constantino
  • For correspondence: fcervantes@psico.edu.uy
T. Sánchez-Costa
1Universidad de la República, Montevideo, Uruguay
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
G.A. Cipriani
1Universidad de la República, Montevideo, Uruguay
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
A. Carboni
1Universidad de la República, Montevideo, Uruguay
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for A. Carboni
  • Abstract
  • Full Text
  • Info/History
  • Metrics
  • Data/Code
  • Preview PDF
Loading

Abstract

Surroundings continually propagate audiovisual (AV) signals, and by attending we make clear and precise sense of those that matter at any given time. In such cases, parallel visual and auditory contributions may jointly serve as a basis for selection. It is unclear what hierarchical effects arise when initial selection criteria are unimodal, or involve uncertainty. Uncertainty in sensory information is a factor considered in computational models of attention proposing precision weighting as a primary mechanism for selection. The effects of visuospatial selection on auditory processing were investigated here with electroencephalography (EEG). We examined the encoding of random tone pips probabilistically associated to spatially-attended visual changes, via a temporal response function model (TRF) of the auditory EEG timeseries. AV precision, or temporal uncertainty, was manipulated across stimuli while participants sustained endogenous visuospatial attention. TRF data showed that cross-modal modulations were dominated by AV precision between auditory and visual onset times. The roles of unimodal (visuospatial and auditory) uncertainties, each a consequence of non-synchronous AV presentations, were further investigated. The TRF data demonstrated that visuospatial uncertainty in attended sector size determines transfer effects by enabling the visual priming of tones when relevant for auditory segregation, in line with top-down processing timescales. Auditory uncertainty in distractor proportion, on the other hand, determined susceptibility of early tone encoding to automatic change by incoming visual update processing. The findings provide a hierarchical account of the role of uni- and cross-modal sources of uncertainty on the neural encoding of sound dynamics in a multimodal attention task.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • http://doi.org/10.17605/OSF.IO/8V9SD

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license.
Back to top
PreviousNext
Posted August 01, 2020.
Download PDF
Data/Code
Email

Thank you for your interest in spreading the word about bioRxiv.

NOTE: Your email address is requested solely to identify you as the sender of this article.

Enter multiple addresses on separate lines or separate them with commas.
Differential Neural Encoding of Sound under Visual Attention is Shaped by Audiovisual Precision and Unimodal Uncertainty Priors
(Your Name) has forwarded a page to you from bioRxiv
(Your Name) thought you would like to see this page from the bioRxiv website.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Share
Differential Neural Encoding of Sound under Visual Attention is Shaped by Audiovisual Precision and Unimodal Uncertainty Priors
F. Cervantes Constantino, T. Sánchez-Costa, G.A. Cipriani, A. Carboni
bioRxiv 2020.07.30.229948; doi: https://doi.org/10.1101/2020.07.30.229948
Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
Citation Tools
Differential Neural Encoding of Sound under Visual Attention is Shaped by Audiovisual Precision and Unimodal Uncertainty Priors
F. Cervantes Constantino, T. Sánchez-Costa, G.A. Cipriani, A. Carboni
bioRxiv 2020.07.30.229948; doi: https://doi.org/10.1101/2020.07.30.229948

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
  • Tweet Widget
  • Facebook Like
  • Google Plus One

Subject Area

  • Neuroscience
Subject Areas
All Articles
  • Animal Behavior and Cognition (2505)
  • Biochemistry (4951)
  • Bioengineering (3452)
  • Bioinformatics (15127)
  • Biophysics (6854)
  • Cancer Biology (5357)
  • Cell Biology (7681)
  • Clinical Trials (138)
  • Developmental Biology (4502)
  • Ecology (7110)
  • Epidemiology (2059)
  • Evolutionary Biology (10178)
  • Genetics (7491)
  • Genomics (9750)
  • Immunology (4801)
  • Microbiology (13131)
  • Molecular Biology (5109)
  • Neuroscience (29289)
  • Paleontology (203)
  • Pathology (832)
  • Pharmacology and Toxicology (1454)
  • Physiology (2116)
  • Plant Biology (4714)
  • Scientific Communication and Education (1002)
  • Synthetic Biology (1332)
  • Systems Biology (3993)
  • Zoology (766)