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19 papers found.
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Electrophysiological correlates of the interplay between low-level visual features and emotional content during word reading

approved by the ethics committee at Ghent University (Faculteit Psychologie en Pedagogische Wetenschappen, Kenmerk 2017/07/Gilles Pourtois), including any relevant details and confirming that the experiment ... in:Nature Research journals • PubMed • Google Scholar Search for Gilles Pourtois in:Nature Research journals • PubMed • Google Scholar Contributions Conceived the experiment: S.S., A.S., G.P. Programmed

The time course of cognitive control implementation

Optimally recruiting cognitive control is a key factor in efficient task performance. In line with influential cognitive control theories, earlier work assumed that control is relatively slow. We challenge this notion and test whether control also can be implemented more rapidly by investigating the time course of cognitive control. In two experiments, a visual discrimination...

‘Why should I care?’ Challenging free will attenuates neural reaction to errors

Whether human beings have free will has been a philosophical question for centuries. The debate about free will has recently entered the public arena through mass media and newspaper articles commenting on scientific findings that leave little to no room for free will. Previous research has shown that encouraging such a deterministic perspective influences behavior, namely by...

Learned Cardiac Control with Heart Rate Biofeedback Transfers to Emotional Reactions

biofeedback training may enable regulation of bodily aspects of emotion also when feedback is not available. - Funding: The project was founded by the Swedish Research Council. Gilles Pourtois was supported ... collection and analysis, decision to publish, or preparation of the manuscript. Competing Interests: Co-author Gilles Pourtois is a PLOS ONE Editorial Board member. This does not alter the authors adherence

Feature-specific attention allocation overrules the orienting response to emotional stimuli

Emotional stimuli are generally thought to be processed in an unconditional fashion. Recent behavioral studies suggest, however, that emotional stimulus processing is critically dependent on attention toward emotional stimulus features. We set out to test this hypothesis using EEG measurements and a modified oddball paradigm. Unexpected emotional stimuli evoked amplitude...

No Prior Entry for Threat-Related Faces: Evidence from Temporal Order Judgments

analysis, decision to publish, or preparation of the manuscript. Competing Interests: Gilles Pourtois is an Academic Editor for PLOS ONE. This does not alter the authors adherence to all the PLOS ONE

Event-Related Potentials Reveal Preserved Attention Allocation but Impaired Emotion Regulation in Patients with Epilepsy and Comorbid Negative Affect

Patients with epilepsy have a high prevalence of comorbid mood disorders. This study aims to evaluate whether negative affect in epilepsy is associated with dysfunction of emotion regulation. Event-related potentials (ERPs) are used in order to unravel the exact electrophysiological time course and investigate whether a possible dysfunction arises during early (attention) and/or...

Effects of social context and predictive relevance on action outcome monitoring

Outcome monitoring is crucial for subsequent adjustments in behavior and is associated with a specific electrophysiological response, the feedback-related negativity (FRN). Besides feedback generated by one’s own action, the performance of others may also be relevant for oneself, and the observation of outcomes for others’ actions elicits an observer FRN (oFRN). To test how these...

Placebo Analgesia Affects Brain Correlates of Error Processing

collection and analysis, decision to publish, or preparation of the manuscript. Competing Interests: Co-authors Gilles Pourtois and Marcel Brass are PLOS ONE Editorial Borad members. This does not alter the

Positive emotion broadens attention focus through decreased position-specific spatial encoding in early visual cortex: Evidence from ERPs

Recent evidence has suggested that not only stimulus-specific attributes or top-down expectations can modulate attention selection processes, but also the actual mood state of the participant. In this study, we tested the prediction that the induction of positive mood can dynamically influence attention allocation and, in turn, modulate early stimulus sensory processing in...

Anxiety not only increases, but also alters early error-monitoring functions

KRISTIEN AARTS 0 GILLES POURTOIS 0 0 Ghent University , Ghent, Belgium Anxiety has profound influences on a wide range of cognitive processes, including action monitoring. Eventrelated brain

Valence-Specific Modulation in the Accumulation of Perceptual Evidence Prior to Visual Scene Recognition

analysis, decision to publish, or preparation of the manuscript. Competing Interests: Gilles Pourtois is an Academic Editor for PLoS ONE. This does not alter the authors adherence to all the PLoS ONE

Cascade of Neural Events Leading from Error Commission to Subsequent Awareness Revealed Using EEG Source Imaging

The goal of the present study was to shed light on the respective contributions of three important action monitoring brain regions (i.e. cingulate cortex, insula, and orbitofrontal cortex) during the conscious detection of response errors. To this end, fourteen healthy adults performed a speeded Go/Nogo task comprising Nogo trials of varying levels of difficulty, designed to...

White-Matter Connectivity between Face-Responsive Regions in the Human Brain

Face recognition is of major social importance and involves highly selective brain regions thought to be organized in a distributed functional network. However, the exact architecture of interconnections between these regions remains unknown. We used functional magnetic resonance imaging to identify face-responsive regions in 22 participants and then employed diffusion tensor...

Decoding Sequence Learning from Single-Trial Intracranial EEG in Humans

We propose and validate a multivariate classification algorithm for characterizing changes in human intracranial electroencephalographic data (iEEG) after learning motor sequences. The algorithm is based on a Hidden Markov Model (HMM) that captures spatio-temporal properties of the iEEG at the level of single trials. Continuous intracranial iEEG was acquired during two sessions...

Temporal precedence of emotion over attention modulations in the lateral amygdala: Intracranial ERP evidence from a patient with temporal lobe epilepsy

Previous fMRI studies have reported mixed evidence for the influence of selective attention on amygdala responses to emotional stimuli, with some studies showing “automatic” emotional effects to threat-related stimuli without attention (or even without awareness), but other studies showing a gating of amygdala activity by selective attention with no response to unattended stimuli...

Object Representations for Multiple Visual Categories Overlap in Lateral Occipital and Medial Fusiform Cortex

Interest : None declared. Address correspondence to Gilles Pourtois, Department of Experimental clinical and health psychology, Ghent University, Henri Dunantlaan 2, 9000 Gent, Belgium. Email: .

Beyond Conventional Event-related Brain Potential (ERP): Exploring the Time-course of Visual Emotion Processing Using Topographic and Principal Component Analyses

Recent technological advances with the scalp EEG methodology allow researchers to record electric fields generated in the human brain using a large number of electrodes or sensors (e.g. 64–256) distributed over the head surface (multi-channel recording). As a consequence, such high-density ERP mapping yields fairly dense ERP data sets that are often hard to analyze...

Electrophysiological Correlates of Rapid Spatial Orienting Towards Fearful Faces

quantitative analyses of visual stimuli. This work is supported by a grant from the Swiss National Fund (632.065935). Correspondence to be sent to Gilles Pourtois, Neurology & Imaging of Cognition, Department