The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion

Hartcher O'Brien J, Di Luca M, Ernst MO (2014)
PLoS ONE 9(3): e89339.

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Often multisensory information is integrated in a statistically optimal fashion where each sensory source is weighted according to its precision. This integration scheme is statistically optimal because it theoretically results in unbiased perceptual estimates with the highest precision possible. There is a current lack of consensus about how the nervous system processes multiple sensory cues to elapsed time. In order to shed light upon this, we adopt a computational approach to pinpoint the integration strategy underlying duration estimation of audio/visual stimuli. One of the assumptions of our computational approach is that the multisensory signals redundantly specify the same stimulus property. Our results clearly show that despite claims to the contrary, perceived duration is the result of an optimal weighting process, similar to that adopted for estimates of space. That is, participants weight the audio and visual information to arrive at the most precise, single duration estimate possible. The work also disentangles how different integration strategies – i.e. considering the time of onset/offset of signals - might alter the final estimate. As such we provide the first concrete evidence of an optimal integration strategy in human duration estimates.
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Hartcher O'Brien J, Di Luca M, Ernst MO. The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion. PLoS ONE. 2014;9(3):e89339.
Hartcher O'Brien, J., Di Luca, M., & Ernst, M. O. (2014). The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion. PLoS ONE, 9(3), e89339. doi:10.1371/journal.pone.0089339
Hartcher O'Brien, J., Di Luca, M., and Ernst, M. O. (2014). The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion. PLoS ONE 9, e89339.
Hartcher O'Brien, J., Di Luca, M., & Ernst, M.O., 2014. The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion. PLoS ONE, 9(3), p e89339.
J. Hartcher O'Brien, M. Di Luca, and M.O. Ernst, “The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion”, PLoS ONE, vol. 9, 2014, pp. e89339.
Hartcher O'Brien, J., Di Luca, M., Ernst, M.O.: The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion. PLoS ONE. 9, e89339 (2014).
Hartcher O'Brien, Jessica, Di Luca, Massimiliano, and Ernst, Marc O. “The duration of uncertain times: audiovisual information about intervals is integrated in a statistically optimal fashion”. PLoS ONE 9.3 (2014): e89339.
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12 Citations in Europe PMC

Data provided by Europe PubMed Central.

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PMID: 28197086
Supramodal representation of temporal priors calibrates interval timing.
Zhang H, Zhou X., J Neurophysiol 118(2), 2017
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Predictive coding of multisensory timing.
Shi Z, Burr D., Curr Opin Behav Sci 8(), 2016
PMID: 27695705
Temporal Regularity of the Environment Drives Time Perception.
Rhodes D, Di Luca M., PLoS One 11(7), 2016
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Butler JS, Campos JL, Bülthoff HH., Exp Brain Res 233(2), 2015
PMID: 25361642
Rate perception adapts across the senses: evidence for a unified timing mechanism.
Levitan CA, Ban YH, Stiles NR, Shimojo S., Sci Rep 5(), 2015
PMID: 25748443
Duration estimates within a modality are integrated sub-optimally.
Cai MB, Eagleman DM., Front Psychol 6(), 2015
PMID: 26321965
Why studying intermodal duration discrimination matters.
Grondin S., Front Psychol 5(), 2014
PMID: 25071626

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