Exploring the Effects of Prefrontal Transcranial Direct Current Stimulation on Brain Metabolites: A Concurrent tDCS-MRS Study.

Transcranial Direct Current Stimulation (tDCS) is a non-invasive brain stimulation technique used to modulates cortical brain activity. However, its effects on brain metabolites within the dorsolateral prefrontal cortex (DLPFC), a crucial area targeted for brain stimulation in mental disorders, remain unclear. This study aimed to investigate whether prefrontal tDCS over the left and right DLPFC modulates levels of key metabolites, including gamma-aminobutyric acid (GABA), glutamate (Glu), glutamine/glutamate (Glx), N-acetylaspartate (NAA), near to the target region and to explore potential sex-specific effects on these metabolite concentrations.

Predictors of symptom change in the mental health of refugees and asylum seekers (MEHIRA) study examining the effects of a stepped and collaborative care model - A multicentered rater-blinded randomized controlled trial.

Background: Predictors of symptom improvement are an essential starting point for tailoring psychological treatments to each individual and, in turn, increasing treatment efficacy overall. However, such research regarding refugees/asylum seekers from Arabic-/Farsi-speaking countries is lacking. The current study aimed to characterize predictors for symptom improvement in the Mental Health in Refugees and Asylum Seekers (MEHIRA) study, one of the most extensive multicentered controlled trials on a nationwide stepped and collaborative care model compared to routine German mental health care.