Nightmares are overrepresented in psychiatric disorders and are strongly associated with suicidality, especially in Major Depressive Episode (MDE). This study had two main objectives: (1) to determine an optimal diagnostic cutoff for the Nightmare Severity Index (NSI) to identify Nightmare Disorder (ND), and (2) to compare the clinical profiles of MDE patients with ND (MDE-ND) and without ND...
Major depressive disorder (MDD) is a prevalent and disabling psychiatric illness. Selective serotonin reuptake inhibitors (SSRIs), while the cornerstone of first-line pharmacotherapy, are limited by delayed therapeutic onset and high rates of nonresponse or partial response. Our previous work demonstrated that a single subanesthetic dose of ketamine or its enantiomers can accelerate SSRI...
Background Anhedonia is a debilitating core feature of mood disorders, and is associated with significant functional impairment and poor quality of life. Psilocybin has recently emerged as a novel antidepressant treatment in MDD, however, its effects on anhedonia specifically have yet to be systematically reviewed. This review evaluates available clinical and pre-clinical research, exploring...
Background: Major depressive and bipolar disorders are leading causes of disability, with many patients developing treatment-resistant depression (TRD/TRBD). Ketamine offers rapid symptom relief, yet recovery extends beyond symptoms. Life engagement (LE) is a key patient-centered outcome encompassing the ability to experience pleasure, function effectively, and participate in meaningful...
Objective: Treatment-resistant depression (TRD) is associated with severe functional impairment, poor quality of life, and increased suicide risk. This study evaluated the effectiveness of intranasal esketamine on depressive symptoms, hopelessness, suicidal ideation, and quality of life in patients with TRD, exploring whether outcomes differed according to concomitant antidepressant class (SSRI...
This study examined interoception and mindfulness as related processes in eating behaviors in a non-clinical population. The aim was to identify interoceptive sensibility and mindfulness clusters using a person-centered approach and to examine their associations with eating behaviors, eating disorder risk, body mass index, and psychological distress. An online survey was conducted in a French...
Nightmares are overrepresented in psychiatric disorders and are strongly associated with suicidality, especially in Major Depressive Episode (MDE). This study had two main objectives: (1) to determine an optimal diagnostic cutoff for the Nightmare Severity Index (NSI) to identify Nightmare Disorder (ND), and (2) to compare the clinical profiles of MDE patients with ND (MDE-ND) and without ND...
Treatment-resistant depression (TRD) is associated with severe depression, low quality of life (QoL) and reduced work productivity, which may increase risk of relapse, suicide and suboptimal response to treatment. Esketamine nasal spray plus a newly-initiated oral antidepressant (esketamine+OAD) has been shown to improve depression symptoms, QoL and productivity in patients with TRD; however...
ABSTRACT: Introduction Ketamine and esketamine have reemerged as promising interventions for treatment-resistant depression (TRD), yet debate persists regarding the clinical relevance of acute dissociative experiences. This secondary exploratory analysis examined the relationship between dissociative experiences induced by subcutaneous esketamine and antidepressant response in patients with...
Journal of Psychiatric ResearchJune 23, 2026Júlio César Claudino Dos Santos, Sofia Januário Bolan, Guilherme Lodetti da Silva et al.
Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental condition characterized by persistent deficits in social communication and interaction, restricted and repetitive patterns of behavior, and sensory processing alterations, frequently accompanied by anxiety, emotional dysregulation, and other psychiatric comorbidities. Despite advances in behavioral and pharmacological...
Oral esketamine is a potentially effective and well-tolerated treatment for treatment-resistant depression (TRD). However, around 50% of TRD individuals treated with oral esketamine do not achieve response, and this variation in response may be accounted for by interindividual differences between patients. Efforts to develop effective and personalized depression treatment strategies are...
Background: Late-life depression (LLD) is a growing public health concern in aging populations. Although digital mindfulness interventions show promise for depression, anxiety, and insomnia, their efficacy and electroencephalogram (EEG) correlates in older adults with LLD remain unclear. This study evaluated the FocusZen Mindfulness Stress Reduction System, a digital mindfulness intervention...
Most academic psychedelic research is clinically oriented, with industry research primarily focusing on the medicalization of these substances. Given the rapid policy changes and the surge in interest among researchers and the public, it is imperative to assess and document the research priorities of the broader psychedelic community. This study aimed to identify these priorities through an...
In patients with treatment-resistant depression (TRD), the efficacy and tolerance of intranasal esketamine (ESK) spray, alone or combined with oral antidepressants, has been supported by clinical trials and observational studies. The French real-world ESKALE study assessed the benefit of ESK in 157 patients with TRD. In this post-hoc analysis of the ESKALE study we aimed to describe the...
Approximately 80% of individuals diagnosed with major depressive disorder (MDD) report symptoms of insomnia. Glutamatergic modulators, such as ketamine, are reported to be effective for the treatment of depressive symptomatology in adults with MDD. Disrupted glutamate homeostasis is linked to poor sleep quality and sleep disorders. Herein, we sought to systematically determine the effect of...
Self-compassion is recognized as important for psychological well-being and has been linked to reduced anxiety levels. Mindfulness-based interventions, such as the 8-week Mindfulness-Based Stress Reduction program (MBSR), have shown promise in treating anxiety disorders, but no studies to date have compared the effects of MBSR to the gold-standard medication treatment (escitalopram) on...
Schizophrenia is a serious neuropsychiatric disorder marked by oxidative stress, immune system changes, and neurochemical imbalances. Current treatments are constrained by inconsistent effectiveness and side effects. This study evaluates the neuroprotective effects of sabinene, a monoterpene, in a mouse model of ketamine-induced schizophrenia. Male mice received ketamine (20 mg/kg/day, i.p.)...
Individuals with autism spectrum disorder (ASD) and their caregivers often face challenges such as emotional distress and stress management, which severely impact their quality of life. Mindfulness-Based Stress Reduction (MBSR) holds potential value in emotional regulation; however, there is a lack of systematic evaluation targeting the ASD population, particularly caregivers. This systematic...
Reality monitoring is the ability to remember whether information was internally- or externally-generated and is often impaired in clinical populations. Though an altered sense of reality characterizes both dissociation and psychosis, no review has compared reality monitoring between them. This paper compares these fields to inform the relation between dissociation and psychosis and the role of...
A recent randomized controlled trial (RCT) did not find an effect of imagery rehearsal therapy (IRT) for nightmares as an add-on to treatment as usual in a sample of trauma-affected refugees. However, certain factors may have accounted for substantial variations in treatment outcomes. This study aimed to test whether symptom severity, cognitive functioning, use of an interpreter, motivation for...
BACKGROUND: Major depressive disorder (MDD) is a leading cause of global disability, and current treatments often fail to provide sustained effectiveness. MDMA-assisted therapy (MDMA-AT) is a promising treatment for MDD. However, the long-term effects are not known. OBJECTIVES: To examine the long-term effects of MDMA-AT for MDD. METHODS: Twelve participants with MDD and an ongoing moderate to...
The etiology of OCD is complex and appears to involve multiple biological pathways. Imbalances in central serotonin, dopamine, and glutamate activities are widely thought to play a causative role. Despite strong evidence supporting first-line OCD pharmacotherapies, approximately 40-60 % of OCD patients remain unresponsive and are considered treatment resistant (TR). Although a range of agents...
Although research shows that psychedelic use may lead to improvement in mental health and well-being, the underlying changes in psychological predictors associated with these improvements remain unclear. 161 participants were recruited in a prospective online survey assessing naturalistic psychedelic use. We used lasso regression to assess how 19 distinct changes in psychological variables...
The Apollo wearable device (wrist or ankle) is an investigational device which provides touch therapy with silent vibrations that may help individuals reduce the symptoms of stress such as difficulty breathing, sleeping or focusing on tasks. Positive feedback from a mental health treatment program that uses ketamine-assisted therapy as a treatment adjunct inspired researchers to assess the...
Dissociation is a psychological response to stress that impairs mental integration, identity, and consciousness and manifests itself in the form of detachment and compartmentalization. Such symptoms are common in psychiatric disorders and reflect altered brain connectivity. In this study, EEG connectivity at rest, before and after activation of the attachment system, was analysed in relation to...