Plasticity of human resilience mechanisms.

The hippocampus's vulnerability to trauma-induced stress can lead to pathophysiological disturbances that precipitate the development of posttraumatic stress disorder (PTSD). The mechanisms of resilience that foster remission and mitigate the adverse effects of stress remain unknown. We analyzed the evolution of hippocampal morphology between 2016/2017 and 2018/2019, as well as the memory control mechanisms crucial for trauma resilience.

A history of PTSD changes the way people express themselves during the COVID-19 pandemic.

The words people use in everyday life tell us about their emotions, their mental state and allow us to understand how people process and interpret an event. Previous research has established a link between the content analysis of narrative texts and the psychopathology of people who have experienced trauma. This study examines whether the development of PTSD following exposure to a previous traumatic event alters the way people express themselves in the context of an anxiety-provoking event, the COVID-19 pandemic.

The multiscale topological organization of the functional brain network in adolescent PTSD.

The experience of an extremely aversive event can produce enduring deleterious behavioral, and neural consequences, among which posttraumatic stress disorder (PTSD) is a representative example. Although adolescence is a period of great exposure to potentially traumatic events, the effects of trauma during adolescence remain understudied in clinical neuroscience. In this exploratory work, we aim to study the whole-cortex functional organization of 14 adolescents with PTSD using a data-driven method tailored to our population of interest.

Functioning and neurocognition in very early and early-life onset bipolar disorders: the moderating role of bipolar disorder type.

Defining homogeneous subgroups of bipolar disorder (BD) is a major goal in personalized psychiatry and research. According to the neurodevelopmental theory, age at onset may be a key variable. As potential trait markers of neurodevelopment, cognitive and functional impairment should be greater in the early form of the disease, particularly type 1 BD (BD I).

Disclosure of sexual abuse by adolescents treated in a psychiatry department.

Objectives: The aim of the study is to describe the population of adolescents who have disclosed sexual abuse to a health professional during their care in a psychiatric department. We also want to discuss the circumstances that enable adolescents to make this disclosure.

Methods: This single-center retrospective observational study is based on the mandatory reports (n=139) sent by a Paris adolescent psychiatry department between 2005 and 2021 after patients disclosed previous sexual abuse.

Melatonin in Neurodevelopmental Disorders: A Critical Literature Review.

The article presents a review of the relationships between melatonin and neurodevelopmental disorders. First, the antioxidant properties of melatonin and its physiological effects are considered to understand better the role of melatonin in typical and atypical neurodevelopment. Then, several neurodevelopmental disorders occurring during infancy, such as autism spectrum disorder or neurogenetic disorders associated with autism (including Smith-Magenis syndrome, Angelman syndrome, Rett's syndrome, Tuberous sclerosis, or Williams-Beuren syndrome) and neurodevelopmental disorders occurring later in adulthood like bipolar disorder and schizophrenia, are discussed with regard to impaired melatonin production and circadian rhythms, in particular, sleep-wake rhythms.

Peritraumatic physical symptoms and the clinical trajectory of PTSD after a terrorist attack: a network model approach.

Following a mass casualty event, such as the Paris terrorist attacks of 13 November 2015, first responders need to identify individuals at risk of PTSD. Physical peritraumatic symptoms involving the autonomic nervous system may be useful in this task. We sought to determine the trajectory of physical response intensity in individuals exposed to the Paris terrorist attacks using repeated measures, and to examine its associations with PTSD.

Association between retinal and cortical visual electrophysiological impairments in schizophrenia.

Background: Electrophysiological impairments in the magnocellular visual system have been reported among patients with schizophrenia, but previous theories proposed that these deficits may begin in the retina. We therefore sought to evaluate the potential contribution of the retina by comparing retinal and cortical visual electrophysiological impairments between patients with schizophrenia and healthy controls.

Methods: We recruited patients with schizophrenia and age- and sex-matched healthy controls.

Crossed clinical features between eating disorders and types of bipolar disorder: Results from the FondaMental Advanced Centers of Expertise - Bipolar Disorder cohort.

Background: Eating disorders (EDs) are liable to alter the disease course of bipolar disorder (BD). We explored the crossed clinical features between EDs and BD, particularly as a function of BD type (BD1 vs. BD2).

Natural IgG Anti-F (ab') Autoantibody Activity in Children with Autism.

Many and diverse autoimmune abnormalities have been reported in children with autism. Natural autoantibodies (NAAbs) play important immunoregulatory roles in recognition of the immune self. The objective of this study was to examine the presence of NAAbs in the sera of children with autism and across severity subgroups of autistic behavioral impairments.

Preserved navigation abilities and spatio-temporal memory in individuals with autism spectrum disorder.

Cerebellar abnormalities have been reported in autism spectrum disorder (ASD). Beyond its role in hallmark features of ASD, the cerebellum and its connectivity with forebrain structures also play a role in navigation. However, the current understanding of navigation abilities in ASD is equivocal, as is the impact of the disorder on the functional anatomy of the cerebellum.

Gender differences in psychosocial function and self-reported health status in late-diagnosed autistic adults: results from the FACE-ASD national cohort.

Background: While adult outcome in autism spectrum disorder (ASD) is generally measured using socially valued roles, it could also be understood in terms of aspects related to health status - an approach that could inform on potential gender differences.

Methods: We investigated gender differences in two aspects of outcome related to health-status, i.e.

[Multiphasic time: Representations, modelisation and dynamics: Putting time back in motion after traumatic violence].

A multiphasic time model, integrating the past, present and future in close interrelations, is first presented and offers a contextual approach to the perceptions and responses of an individual according to his/her personal history and environment. The present and future prospects are in continuity with the past and its consequences and effects. The past, even when it is not or no longer expressed, influences the present and the future, and this over several generations.

[School bullying and group violence: How to occupy a place in the group by exclusion].

The prevalence of school bullying (a deliberate, repeated act of verbal, physical or relational/social aggression occurring in a situation of inequality, including cyberbullying) is high in France (10 %) as well as in other countries like the United States (more than 40 % of school children have experienced harassment at some point in their school cursus). This frequency varies by country, source of observation, school, class, and age of children. Self-questionnaires where children have to self-identify as harassing or being harassed involve a clear bias of underevaluation (even for harassed children who can feel ashamed to report explicitly harassment).

Altered predictive control during memory suppression in PTSD.

Aberrant predictions of future threat lead to maladaptive avoidance in individuals with post-traumatic stress disorder (PTSD). How this disruption in prediction influences the control of memory states orchestrated by the dorsolateral prefrontal cortex is unknown. We combined computational modeling and brain connectivity analyses to reveal how individuals exposed and nonexposed to the 2015 Paris terrorist attacks formed and controlled beliefs about future intrusive re-experiencing implemented in the laboratory during a memory suppression task.

Avoidance behaviour generalizes to eye processing in posttraumatic stress disorder.

Background: describes any action designed to prevent an uncomfortable situation or emotion from occurring. Although it is a common reaction to trauma, avoidance becomes problematic when it is the primary coping strategy, and plays a major role in the development and maintenance of posttraumatic stress disorder (PTSD). Avoidance in PTSD may generalize to non-harmful environmental cues that are perceived to be unsafe.

Disclosure of Sibling Sexual Abuse by Hospitalized Adolescent Girls: Three Case Reports.

Although sibling sexual abuse (SSA) may be the most common type of intrafamilial sexual abuse, it has not been widely studied. The lack of studies makes it very difficult for clinicians to create a comprehensive framework about this complex phenomenon, particularly in comparison with other forms of intrafamilial sexual abuse, such as father-daughter incest. SSA is still underrecognized and underdisclosed but it has the potential to be every bit as harmful as sexual abuse by a parent.

[Therapeutic approaches for sleep and rhythms disorders in children with ASD].

Sleep disturbances are extremely common (40-86%) in children and adolescents, especially those with autism spectrum disorders (ASD) and are often among the first symptoms identified by parents at a very early stage of their child's development. These abnormalities are among the main parental concerns when having a child with ASD and have a significant impact on the quality of life of patients, their parents, and more broadly their siblings. Sleep disorders are essentially abnormalities of the sleep-wake rhythm - primarily sleep onset insomnia or nocturnal awakenings (with difficulty falling back to sleep).

Altered central vision and amacrine cells dysfunction as marker of hypodopaminergic activity in treated patients with schizophrenia.

Background: Retinal dysfunction is widely documented in schizophrenia using flash (fERG) and pattern electroretinograms (PERG), but the role of dopamine transmission has seldom been explored.

Methods: We explored the role of dopamine transmission by evaluating the spatial location of retinal anomalies using multifocal ERG (mfERG) in photopic condition and the oscillatory potentials (OPs) extracted from fERG measured in scotopic condition in 29 patients with schizophrenia and 29 healthy controls.

Results: With the mfERG, our main results revealed reduced amplitudes in the center of the retina: P1 (p < .

Self-representation in Kleine-Levin syndrome: a single case fMRI study.

Kleine-Levin syndrome (KLS) is characterized by recurrent episodes of hypersomnia, compulsive hyperphagia, disinhibition, hypersexuality and self modifications. To investigate the Self, we used afunctional magnetic resonance imaging paradigm evaluating Self-reference processing (SRP) and Self-reference effect (SRE) in a17-year-old male adolescent at the end of an episode. We observed enhanced activations in right hemisphere and posterior areas- associated with physical Self representations- during the SRP condition, while during the SRE condition, enhanced activations in bilateral but prevailing left frontal areas- associated with the conceptual Self.

Impaired P100 among regular cannabis users in response to magnocellular biased visual stimuli.

Regular cannabis using causes vision impairment by affecting human retinal neurotransmission. However, studies less considered its impact on the subsequent visual cortical processing, key feature for the integration of the visual signal in brain. We aimed at investigating this purpose in regular cannabis users using spatial frequencies and temporal frequencies filtered visual stimuli.

Validation of the French version of the Cannabis Use Disorder Identification Test-Revised and comparison with the Cannabis Abuse Screening Test for screening cannabis use disorder in a psychiatric sample.

Introduction: Several questionnaires have been developed for screening cannabis use disorder in clinical populations, but very few studies have compared the screening abilities of the different instruments. Here, we aimed to confirm the psychometric properties of a French version of the Cannabis Use Disorder Identification Test-Revised (CUDIT-R), and to compare its screening abilities with those of the Cannabis Abuse Screening Test (CAST), in subjects consulting in mental health settings.

Methods: Two hundred and thirteen cannabis smokers who sought treatment for any type of mental disorder, recruited in four French centres, completed the French CUDIT-R (CUDIT-R-Fr) and the full version of the CAST, and were assessed for Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition criteria of cannabis use disorder by an addiction specialist.