Binocular summation of chance decisions

Oren Yehezkel; Anna Sterkin; Dov Sagi; Uri Polat

doi:10.1038/srep16799

Binocular summation of chance decisions

Oren Yehezkel
, Anna Sterkin
, Dov Sagi
, Uri Polat

Tel Aviv University
Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Seeing with two eyes usually helps one respond faster. Here we show that with ambiguous stimuli, binocular viewing can paradoxically slow down reaction time. This is explained by the observers basing their decision on a noisy neuronal representation within the visual system, with the added noise breaking the symmetry between the two possible interpretations. Binocular integration improves the representation by reducing the noise, increasing ambiguity, and decision time. The neuronal Accumulator (Race) model is applied to quantify the underlying binocular integration. The model accounts for the distributions of reaction times, and predicts suboptimal integration between eyes. We conclude that under ambiguous stimulation neuronal noise within the visual system determines responses.

Original language	English
Article number	16799
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep16799
State	Published - 18 Nov 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015, Nature Publishing Group. All rights reserved.

Funding

We thank Marius Usher, Alex Zlotnik, Rani Moran, Misha Katkov and Yoram Bonneh for their help and anonymous reviewers for their constructive comments. This research was supported by grants from the Israel Science Foundation (ISF188/2010).

Funders	Funder number
Israel Science Foundation	ISF188/2010

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Binocular summation of chance decisions

Abstract

Bibliographical note

Funding

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