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Confidence through consensus : a neural mechanism for uncertainty monitoring

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Author/s:
Paz, Luciano
Insabato, Andrea
Zylberberg, Ariel
Deco, Gustavo
Sigman, Mariano
Date:
2016-02-24
Abstract
Models that integrate sensory evidence to a threshold can explain task accuracy, response times and confidence, yet it is still unclear how confidence is encoded in the brain. Classic models assume that confidence is encoded in some form of balance between the evidence integrated in favor and against the selected option. However, recent experiments that measure the sensory evidence’s influence on choice and confidence contradict these classic models. We propose that the decision is taken by many loosely coupled modules each of which represent a stochastic sample of the sensory evidence integral. Confidence is then encoded in the dispersion between modules. We show that our proposal can account for the well established relations between confidence, and stimuli discriminability and reaction times, as well as the fluctuations influence on choice and confidence.
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https://doi.org/10.1038/srep21830
https://repositorio.utdt.edu/handle/20.500.13098/11068
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Página de ayuda al investigador
Horarios de atención
Campus Alcorta
Av. Figueroa Alcorta 7350 (C1428BCW)
Sáenz Valiente 1010 (C1428BIJ)
Ciudad de Buenos Aires, Argentina
P: (54 11) 5169 7000

 

 



Página de ayuda al investigador
Horarios de atención
Campus Alcorta
Av. Figueroa Alcorta 7350 (C1428BCW)
Sáenz Valiente 1010 (C1428BIJ)
Ciudad de Buenos Aires, Argentina
P: (54 11) 5169 7000