Loretxu Bergouignan

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CONTEXT According to meta-analyses, depression is associated with a smaller hippocampus. Most magnetic resonance imaging (MRI) studies among middle aged acute depressed patients are based on manual segmentation of the hippocampus. Few studies used automated methods such as voxel-based morphometry (VBM) or automated segmentation that can overcome certain(More)
BACKGROUND A consistent brain activity pattern has been identified in major depression across many resting positron emission tomography (PET) studies. This dysfunctional pattern seems to be normalized by antidepressant treatment. The aim of this meta-analysis was to identify more clearly the pattern associated with clinical improvement of depression(More)
Theoretical models have suggested an association between the ongoing experience of the world from the perspective of one's own body and hippocampus-based episodic memory. This link has been supported by clinical reports of long-term episodic memory impairments in psychiatric conditions with dissociative symptoms, in which individuals feel detached from(More)
BACKGROUND Depressed patients exhibit cognitive biases, including maladaptive self-focus. In a previous functional magnetic resonance imaging (fMRI) study, the dorsal medial prefrontal cortex (MPFC) activation during self-referential versus semantic processing was unique to patients, as was the left dorsolateral prefrontal cortex (DLPFC) activation. The aim(More)
Research on autobiographical memory (AM) and the ability to retrieve specific autobiographical events in euthymic depressed patients yielded divergent results. The main goal of the present study was to further explore episodic specificity of AM among fully remitted depressed patients. Twenty euthymic depressed patients and 20 matched healthy controls were(More)
BACKGROUND Neuroimaging studies show the hippocampus is a crucial node in the neural network supporting episodic autobiographical memory retrieval. Stress-related psychiatric disorders, namely Major Depression and Post Traumatic Stress Disorder (PTSD), are related to reduced hippocampus volume. However, this is not the case for remitted breast cancer(More)
The neural bases of the association between negative affectivity and self-focus remain unknown in healthy subjects. Building on the role of the cortical midline structures (CMS) in self-referential processing, we hypothesized that negative affectivity in healthy subjects would be associated with an increased activation of the CMS during self-referential(More)
Major depression is associated with a decrease of 1st person (versus 3rd person) visual perspective in autobiographical memory, even after full remission. This study aimed to examine visual perspective in healthy never-depressed subjects presenting with either genetic or psychological vulnerability for depression. Sixty healthy participants performed the(More)
Major depression is associated with an excessive self-focus, a tendency to engage oneself in self-referential processing. The medial frontal gyrus (MFG) is central to self-referential processing. This study aimed to explore the neural bases of this excessive self-focus and to disambiguate the role of the MFG in the pathophysiology of major depression. We(More)
Visual perspective (i.e. first-person versus third-person perspective) during autobiographical memory (AM) retrieval plays a role in both emotional regulation and self-related processes. However, its neural underpinnings remain mostly unexplored. Visual perspective during AM retrieval was assessed in two independent datasets of 45 and 20 healthy young(More)