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Deviant sound frequency and time stimuli in auditory oddball tasks reveal persistent aberrant brain activity in patients with psychosis and symptomatic remission.
J Psychiatr Res
January 2025
Department of Psychiatry and Clinical Psychology, Clínica Universidad de Navarra, Pamplona, Spain; Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
The detection of rare or deviant stimuli shares common brain circuits involved in temporal processing and salience, critical for cognitive control. Disruption in these processes may contribute to the mechanisms of the disease and explain cognitive deficits observed in psychosis and related disorders. We designed a neuroimaging study, using oddball task-based functional sequences (fMRI) and diffusion tensor imaging (DTI), comparing healthy controls (HC, n = 14, 7 females) and patients with stable psychosis (PSY, n = 20, 10 females).
View Article and Find Full Text PDFRefractory Psychosis as a Red Flag for End of Life in Individuals With Dementia With Lewy Bodies: A Case Series and Re-analysis of Prior Qualitative Data.
Alzheimer Dis Assoc Disord
January 2025
Department of Psychiatry, University of Michigan, Ann Arbor, MI.
Objectives: Many individuals with dementia with Lewy bodies (DLB) die of disease-related complications, but predicting the end of life can be challenging. We identified a phenotype associated with approaching end of life.
Methods: We present 4 exemplar cases where individuals with DLB experienced refractory psychosis before death.
Transcutaneous vagus nerve stimulation for Parkinson's disease: a systematic review and meta-analysis.
Front Aging Neurosci
January 2025
Affiliated Rehabilitation Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China.
Background: Transcutaneous vagus nerve stimulation (tVNS) has emerged as a novel noninvasive adjunct therapy for advanced Parkinson's disease (PD), yet no quantitative analysis had been conducted to assess its therapeutic effect.
Objectives: This review aimed to investigate the efficacy of tVNS on motor function, other potential clinical targets and its safety in various treatment conditions.
Methods: We searched six databases for randomized controlled trials (RCTs) that involved treating PD patients with tVNS.
Cognitive Impairment in Psychotic Disorders Is Associated with Brain Reductive Stress and Impaired Energy Metabolism as Measured by 31P Magnetic Resonance Spectroscopy.
Schizophr Bull
January 2025
Psychotic Disorders Division, McLean Hospital, Belmont, MA, United States.
Background And Hypothesis: Convergent evidence shows the presence of brain metabolic abnormalities in psychotic disorders. This study examined brain reductive stress and energy metabolism in people with psychotic disorders with impaired or average range cognition. We hypothesized that global cognitive impairment would be associated with greater brain metabolic dysregulation.
View Article and Find Full Text PDFExploring the Implementation of Cognitive Screening in First-Episode Psychosis Settings: The CogScreen Implementation Study.
Early Interv Psychiatry
February 2025
Orygen, Parkville, Victoria, Australia.
Aim: Accurate and appropriate cognitive screening can significantly enhance early psychosis care, yet no screening tools have been validated for the early psychosis population and little is known about current screening practices, experiences, or factors that may influence implementation. CogScreen is a hybrid type 1 study aiming to validate two promising screening tools with young people with first episode psychosis (primary aim) and to understand the context for implementing cognitive screening in early psychosis settings (secondary aim). This protocol outlines the implementation study, which aims to explore the current practices, acceptability, feasibility and determinants of cognitive screening in early psychosis settings from the perspective of key stakeholders.
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