Parallel linear dynamic models can mimic the McGurk effect in clinical populations.

Abstract:

:One of the most common examples of audiovisual speech integration is the McGurk effect. As an example, an auditory syllable /ba/ recorded over incongruent lip movements that produce "ga" typically causes listeners to hear "da". This report hypothesizes reasons why certain clinical and listeners who are hard of hearing might be more susceptible to visual influence. Conversely, we also examine why other listeners appear less susceptible to the McGurk effect (i.e., they report hearing just the auditory stimulus without being influenced by the visual). Such explanations are accompanied by a mechanistic explanation of integration phenomena including visual inhibition of auditory information, or slower rate of accumulation of inputs. First, simulations of a linear dynamic parallel interactive model were instantiated using inhibition and facilitation to examine potential mechanisms underlying integration. In a second set of simulations, we systematically manipulated the inhibition parameter values to model data obtained from listeners with autism spectrum disorder. In summary, we argue that cross-modal inhibition parameter values explain individual variability in McGurk perceptibility. Nonetheless, different mechanisms should continue to be explored in an effort to better understand current data patterns in the audiovisual integration literature.

journal_name

J Comput Neurosci

authors

Altieri N,Yang CT

doi

10.1007/s10827-016-0610-z

subject

Has Abstract

pub_date

2016-10-01 00:00:00

pages

143-55

issue

2

eissn

0929-5313

issn

1573-6873

pii

10.1007/s10827-016-0610-z

journal_volume

41

pub_type

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