@misc{10481/61243,
year = {2019},
month = {9},
url = {http://hdl.handle.net/10481/61243},
abstract = {Objective: To study the time course of the electrocortical activity evoked by gains and
losses in the Iowa Gambling Task (IGT), the brain sources of this electrical activity, and its
association with behavioral parameters of task performance in order to achieve a better
knowledge of decision-making processes.
Method: Event-related potentials (ERPs) were obtained from a 64-channel EEG in
25 participants when performing the IGT. Brain source localization analyses of the ERP
components were also assessed.
Results: ERP amplitudes were sensitive to gains and losses. An early fronto-central
negativity was elicited when feedback was provided for both gains and losses, and
correlated with the number of gains at FCz and with the number of both gains and
losses at Cz. The P200 component had larger amplitudes to losses and correlated
positively with the number of losses. Feedback related negativity (FRN) was higher at
frontal, temporal and occipital electrodes in trials with monetary losses. In addition, trials
with monetary losses elicited larger P300 magnitudes than trials with monetary gains at
all electrode localizations.
Conclusions: All ERP components (except P300) were related to participants’
performance in the IGT. Amplitudes of P200 and P300 were associated with the
conscious recognition of the error during the decision-making. Performance data and
source analysis underline the importance of the medial prefrontal cortex when processing
feedback about monetary losses in the IGT.},
organization = {This research was supported by grants from the Spanish
Ministry of Science and Innovation (Ministerio de Ciencia y
Tecnología), European Regional Development Funds (ERDF)
and Ministry of Economy, Industry and Competitiveness
(Ministerio de Economía, Industria y Competitividad, Gobierno
de España). References: PSI2008-04394, PSI2017-88388-C4-1-R
and PSI2017-88388-C4-3-R.},
publisher = {Frontiers Media},
keywords = {Decision making},
keywords = {Evoked potentials (Electrophysiology)},
keywords = {Feedback learning},
keywords = {P200 evoked potentials},
keywords = {P300 component},
title = {Time Course of the Neural Activity Related to Behavioral Decision-Making as Revealed by Event-Related Potentials},
doi = {10.3389/fnbeh.2019.00191},
author = {Martínez Selva, José M. and Muñoz García, Miguel Ángel and Sánchez Navarro, Juan P. and Walteros, César and Montoya, Pedro},
}