The timing of exploratory decision-making revealed by single-trial topographic EEGanalyses

NeuroImage
Athina TzovaraMarzia De Lucia

Abstract

Decision-making in an uncertain environment is driven by two major needs: exploring the environment to gather information or exploiting acquired knowledge to maximize reward. The neural processes underlying exploratory decision-making have been mainly studied by means of functional magnetic resonance imaging, overlooking any information about the time when decisions are made. Here, we carried out an electroencephalography (EEG) experiment, in order to detect the time when the brain generators responsible for these decisions have been sufficiently activated to lead to the next decision. Our analyses, based on a classification scheme, extract time-unlocked voltage topographies during reward presentation and use them to predict the type of decisions made on the subsequent trial. Classification accuracy, measured as the area under the Receiver Operator's Characteristic curve was on average 0.65 across 7 subjects. Classification accuracy was above chance levels already after 516 ms on average, across subjects. We speculate that decisions were already made before this critical period, as confirmed by a positive correlation with reaction times across subjects. On an individual subject basis, distributed source estimations were perform...Continue Reading

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Citations

Aug 15, 2012·Developmental Neuropsychology·Athina TzovaraMarzia De Lucia
Nov 14, 2012·Brain : a Journal of Neurology·Athina TzovaraMarzia De Lucia
Oct 3, 2013·BMC Neuroscience·Laila Massad RibasEduardo Massad
Jul 30, 2014·PloS One·Riccardo PoliCaterina Cinel
Oct 8, 2014·Journal of Neuroscience Methods·Athina TzovaraMarzia De Lucia
Jun 5, 2015·Journal of Cognitive Neuroscience·Leila ChouiterLucas Spierer
Nov 5, 2016·Journal of Neuroscience Methods·Irene SturmKlaus-Robert Müller
Aug 31, 2012·Nature Reviews. Neuroscience·Thomas Knöpfel
Nov 19, 2019·Vision·Sarah M HaighMarlene Behrmann
Feb 16, 2019·Frontiers in Human Neuroscience·Caterina CinelRiccardo Poli
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Apr 22, 2018·NeuroImage·Chrysa RetsaMicah M Murray

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