References of "Schwartz, Sophie"
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See detailAbility to Maintain Internal Arousal and Motivation Modulates Brain Responses to Emotions
Sterpenich, Virginie; Schwartz, Sophie; MAQUET, Pierre ULiege et al

in PLoS ONE (2014)

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See detailSleep sharpens sensory stimulus coding in human visual cortex after fear conditioning.
Sterpenich, Virginie; Piguet, Camille; Desseilles, Martin ULiege et al

in NeuroImage (2014), 100

Efficient perceptual identification of emotionally-relevant stimuli requires optimized neural coding. Because sleep contributes to neural plasticity mechanisms, we asked whether the perceptual ... [more ▼]

Efficient perceptual identification of emotionally-relevant stimuli requires optimized neural coding. Because sleep contributes to neural plasticity mechanisms, we asked whether the perceptual representation of emotionally-relevant stimuli within sensory cortices is modified after a period of sleep. We show combined effects of sleep and aversive conditioning on subsequent discrimination of face identity information, with parallel plasticity in the amygdala and visual cortex. After one night of sleep (but neither immediately nor after an equal waking interval), a fear-conditioned face was better detected when morphed with another identity. This behavioral change was accompanied by increased selectivity of the amygdala and face-responsive fusiform regions. Overnight neural changes can thus sharpen the representation of threat-related stimuli in cortical sensory areas, in order to improve detection in impoverished or ambiguous situations. These findings reveal an important role of sleep in shaping cortical selectivity to emotionally-relevant cues and thus promoting adaptive responses to new dangers. [less ▲]

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Gaggioni, Giulia ULiege; Igloi, Kinga; Eryilmaz, Hamdi et al

Conference (2013, September)

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Igloi, Kinga; Gaggioni, Giulia ULiege; Eryilmaz, Hamdi et al

Poster (2013, June)

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Igloi, Kinga; Gaggioni, Giulia ULiege; Eryilmaz, Hamdi et al

in Abstract book of the SSSSC annual meeting (2013, May)

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Igloi, Kinga; Gaggioni, Giulia ULiege; Eryilmaz, Hamdi et al

in Abstract book of BBL/CIBM Research Day (2013, May)

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Igloi, Kinga; Gaggioni, Giulia ULiege; Eryilmaz, Hamdi et al

in Abstract book of the NCCR Annual Research Forum (2013, February)

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Igloi, Kinga; Gaggioni, Giulia ULiege; Eryilmaz, Hamdi et al

in Abstract book of the ABIM meeting (2013, January)

Detailed reference viewed: 23 (11 ULiège)
See detailThe role of reward in sleep-related memory consolidation
Gaggioni, Giulia ULiege; Igloi, Kinga; Eryilmaz, Hamdi et al

Poster (2012, June)

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See detailSommeil, rêve et regulation émotionnelle
Desseilles, Martin ULiege; Mikolajczak, Gladys; Schwartz, Sophie

in Mikolajczak, Moïra; Desseilles, Martin (Eds.) Traité de régulation des émotions (2012)

Detailed reference viewed: 44 (5 ULiège)
See detailEmotion and sleep interact to enhance the perceptual discrimination of ambiguous faces. Abstract book of the conference
Sterpenich, Virginie; Piguet, Camille; Desseilles, Martin ULiege et al

Conference (2011, June)

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See detailNeuroimaging insight into the dreaming brains
Desseilles, Martin ULiege; Dang-Vu, Thien Thanh; Schabus, Manuel et al

in Soriento, Yolanda E. (Ed.) Melatonin, Sleep and Insomnia (2011)

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See detailNeuroimaging insights into insomnia
Desseilles, Martin ULiege; Dang-Vu, Thien Thanh; Schabus, Manuel et al

in Soriento, Yolanda E. (Ed.) Melatonin, Sleep and Insomnia (2011)

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See detailDepression alters "top-down" visual attention: a dynamic causal modeling comparison between depressed and healthy subjects.
Desseilles, Martin ULiege; Schwartz, Sophie; Dang Vu, Thien Thanh ULiege et al

in NeuroImage (2011), 54(2), 1662-8

Using functional magnetic resonance imaging (fMRI), we recently demonstrated that nonmedicated patients with a first episode of unipolar major depression (MDD) compared to matched controls exhibited an ... [more ▼]

Using functional magnetic resonance imaging (fMRI), we recently demonstrated that nonmedicated patients with a first episode of unipolar major depression (MDD) compared to matched controls exhibited an abnormal neural filtering of irrelevant visual information (Desseilles et al., 2009). During scanning, subjects performed a visual attention task imposing two different levels of attentional load at fixation (low or high), while task-irrelevant colored stimuli were presented in the periphery. In the present study, we focused on the visuo-attentional system and used "Dynamic Causal Modeling" (DCM) on the same dataset to assess how attention influences a network of three dynamically-interconnected brain regions (visual areas V1 and V4, and intraparietal sulcus (P), differentially in MDD patients and healthy controls. Bayesian model selection (BMS) and model space partitioning (MSP) were used to determine the best model in each population. The best model for the controls revealed that the increase of parietal activity by high attention load was selectively associated with a negative modulation of P on V4, consistent with high attention reducing the processing of irrelevant colored peripheral stimuli. The best model accounting for the data from the MDD patients showed that both low and high attention levels exerted modulatory effects on P. The present results document abnormal effective connectivity across visuo-attentional networks in MDD, which likely contributes to deficient attentional filtering of information. [less ▲]

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