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Concept

Activation physiologique

Publications associées (18)

Tapping into Multi-Faceted Human Behavior and Psychopathology Using fMRI Brain Dynamics

Dimitri Nestor Alice Van De Ville, Maria Giulia Preti, Thomas William Arthur Bolton, Elenor Morgenroth

Human behavior comprises many aspects that stand out by their dynamic nature. To quantify its neural underpinnings, time-resolved fMRI methods have blossomed over the past decade. In this review we conceptually organize a broad repertoire of dynamic analyt ...

2020

Brainstem Correlates of a Cold Pressor Test Measured by Ultra-High Field fMRI

Dimitri Nestor Alice Van De Ville, Sandra Elisabete Monney, Olivier Benoit Thomas Reynaud, Domenica Bueti

Introduction Modern imaging techniques such as blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) allow the non-invasive and indirect measurement of brain activity. Whether changes in signal intensity can be detected in small ...

2020

Real-Time Cognitive Workload Monitoring Based on Machine Learning Using Physiological Signals in Rescue Missions

David Atienza Alonso, Adriana Arza Valdes, Fabio Isidoro Tiberio Dell'Agnola, Niloofar Momeni

High levels of cognitive workload decreases human's performance and leads to failures with catastrophic outcomes in risky missions. Today, reliable cognitive workload detection presents a common major challenge, since the workload is not directly observabl ...

IEEE2019

Experimentally-constrained biophysical models of tonic and burst firing modes in thalamocortical neurons

Henry Markram, Sean Lewis Hill, Werner Alfons Hilda Van Geit, Ying Shi, Christian O'Reilly, Christian Andreas Rössert, Elisabetta Iavarone, Bas-Jan Zandt, Jane Yi

Somatosensory thalamocortical (TC) neurons from the ventrobasal (VB) thalamus are central components in the flow of sensory information between the periphery and the cerebral cortex, and participate in the dynamic regulation of thalamocortical states inclu ...

2019

Distinct locomotor control and awareness in awake sleepwalkers

Olaf Blanke, Oliver Alan Kannape

Sleepwalkers’ complex nocturnal behaviors have inspired fictional characters from Shakespeare’s Lady Macbeth to Polidori’s Vampyre to Cesare, the homicidal somnambulist in The Cabinet of Dr Caligari. Yet although the underlying pathophysiology of sleepwalk ...

Elsevier2017

Towards building an attentive artificial listener: on the perception of attentiveness in audio-visual feedback tokens

Jean-Marc Odobez, Yu Yu, Catharine Regina Monika Maria Oertel Genannt Bierbach, Kenneth Alberto Funes Mora

Current dialogue systems typically lack a variation of audio-visual feedback tokens. Either they do not encompass feedback tokens at all, or only support a limited set of stereotypical functions. However, this does not mirror the subtleties of spontaneous ...

ACM2016

Multimodal Dataset for Assessment of Quality of Experience in Immersive Multimedia

Touradj Ebrahimi, Martin Rerabek, Eleni Kroupi, He Xu, Anne-Flore Nicole Marie Perrin

This paper presents a novel multimodal dataset for the analysis of Quality of Experience (QoE) in emerging immersive multimedia technologies. In particular, the perceived Sense of Presence (SoP) induced by one-minute long video stimuli is explored with res ...

2015

Implicit Affective Profiling of Subjects based on Physiological Data Coupling

Touradj Ebrahimi, Jean-Marc Vesin, Eleni Kroupi

Evidence from neuroscience and psychology supports the idea that synchronization among various sub-components of the organism is the key-point to emotional processes. This study investigates the way signals from the central nervous system interact with sig ...

2014

Affect Recognition Based on Physiological Changes During the Watching of Music Video

Touradj Ebrahimi, Jean-Marc Vesin, Jong Seok Lee, Ashkan Yazdani

Assessing emotional states of users evoked during their multimedia consumption has received a great deal of attention with recent advances in multimedia content distribution technologies and increasing interest in personalized content delivery. Physiologic ...

2012

The missing social instinct : behavioral and functional brain imaging investigations in autism

Smooth social interactions in everyday life rely on spontaneous understanding of emotions and intentions of others, conveyed by subtle social cues, such as gaze and facial expressions. In individuals with autism, however, who represent close to 1% of the p ...

EPFL2012

Psychobiological Vulnerability to Stress : Behavioral Traits and Neurobiological Mechanisms

Maria del Carmen Sandi Perez, Jorge Eduardo Castro Cifuentes

Several psychobiological factors are associated with vulnerability/resilience to stress-induced depression. Emerging evidence indicates behavioral traits, such as anxiety, can be related to depression-like symptoms after exposure to chronic stress. However ...

EPFL2012

Impact of transient emotions on functional connectivity during subsequent resting state: A wavelet correlation approach

Dimitri Nestor Alice Van De Ville

The functional properties of resting brain activity are poorly understood, but have generally been related to self-monitoring and introspective processes. Here we investigated how emotionally positive and negative information differentially influenced subs ...

Elsevier2011

Prefrontal Plasticity and Stress Inoculation-Induced Resilience

Marie Schaer

Coping with mild early life stress tends to make subsequent coping efforts more effective and therefore more likely to be used as a means of arousal regulation and resilience. Here we show that this developmental learning-like process of stress inoculation ...

2009

EEG-MEG evidence for early differential repetition effects for fearful, happy and neutral faces

Nathalie George

To deter-mine how emotional information modulates subsequent traces for repeated stimuli, we combined simultaneous electro-encephalography (EEG) and magneto-encephalography (MEG) measures during long-lag incidental repetition of fearful, happy, and neutral ...

2009

Stress, genotype and norepinephrine in the prediction of mouse behavior using reinforcement learning

Maria del Carmen Sandi Perez, Wulfram Gerstner, Gediminas Luksys

Individual behavioral performance during learning is known to be affected by modulatory factors, such as stress and motivation, and by genetic predispositions that influence sensitivity to these factors. Despite numerous studies, no integrative framework i ...

Nature Publishing Group2009

Chronic stress-induced alterations in amygdala responsiveness and behavior - modulation by trait anxiety and corticotropin-releasing factor systems

Maria del Carmen Sandi Perez, Maria Isabel Cordero Campana

The basolateral nucleus of the amygdala (BLA) plays a key role in emotional arousal and anxiety, and expresses high levels of corticotropin-releasing factor receptor (CRFR)1. In rat brain slices, we have recently shown that afferent activation of the BLA i ...

Wiley-Blackwell2008

Adaptive FID-navigators for respiration monitoring in multi-slice fMRI applications

Rolf Gruetter, Tobias Kober, José Pedro Rebelo Ferreira Marques, Wietske Van der Zwaag, Reto Meuli, Gunnar Krüger

Functional magnetic resonance imaging (fMRI) measures activation-induced signal changes by means of the blood-oxygenation-level-depended (BOLD) contrast. Since signal changes are typically only 1-3%, the method is intrinsically sensitive to all signal inst ...

2008

La ville comme "Stimmungslandschaft" : le sentiment urbain à Buenos Aires aux XIXe et XXe siècles

Marcelo Bidinost

This thesis analyses the city of Buenos Aires as a lived space in its historical context, based on my childhood memories. It characterizes the specific Stimmung that colours the urban and suburban spaces of Buenos Aires in the XIXth and XXth century. I ach ...

EPFL2007