Active clinical trials for "Cognitive Dysfunction"

The study was a prospective cohort study to assess the effect of age, duration of anesthesia, repeated surgery, and type of surgery on cognitive impairment in 108 geriatric patients (≥60 years) who underwent general anesthesia for non-neurologic noncardiac surgery.

This is an observational study. Patients who fulfill all inclusion criteria and none of the exclusion criteria will be enrolled in the study, be neurologically evaluated and will go through EEG recordings while listening to an auditory cognitive assessment tool and preforming tasks. EEG recordings will be analyzed using proprietary computational analyses.

The study evaluates if the relationship between total serum cholesterol is dependent on the total serum homocysteine. Fasting blood samples will taken from participants and two batteries of cognitive scales will be used to asses any cognitive decline.

This is a non-pharmacological study evaluating the effects of SMR/delta ratio and beta1/theta ratio neurofeedback trainings on cognitive performance and electrical brain activity in elderly with mild cognitive impairment.

The purpose of this study (Bio-Hermes) is to develop a blood, digital, and brain amyloid PET scan biomarker database that can be used to determine whether a meaningful relationship exists between digital tests, blood amyloid-beta, p-tau, and neurofilament biomarker levels and amyloid-beta levels identified through brain amyloid PET images. Blood collected will also be genetically sequenced to gain insights about genes and brain amyloid. The Bio-Hermes study will include 1,000 volunteers over the age of 60 screened for Preclinical Alzheimer's Disease, Prodromal AD, or Mild Dementia AD, and includes an endpoint enrollment requirement of 200 participants from underrepresented minority populations.

There is lack of attention to preoperative cognitive function and delirium in elderly who underwent surgery. The investigators are investigating different tools that can help to screen for cognitive dysfunction and delirium in the future.

Schizophrenia is a heritable complex phenotype whose symptoms can be clustered into three domains: positive symptoms, negative symptoms and cognitive impairments. Constellations of negative symptoms in SCZ are composed of diminished motivation and pleasure, such as asociality, anhedonia, and avolition, or diminished expressivity such as blunted affect and alogia. Negative symptoms are associated with decreased quality of life and poor functional outcomes. Although antipsychotics are generally effective on positive symptoms, they are poorly effective on negative symptoms Currently, there are no licensed targeted medications for negative symptoms. In view of these problems, considerable interest in identifying new treatment targets for negative symptoms has grown over the past decade. Despite intense efforts in brain imaging that have opened new opportunities for addressing these issues, the neurobiological mechanism of negative symptoms remains unclear. Structural brain measures from magnetic resonance imaging (MRI) are highly heritable and representatively have high reproducibility and low measurement error. Prior neuroimaging researches have consistently shown neuroanatomical abnormalities in the brains of individuals with SCZ, with the most robust and consistent group-level structural differences in widespread reduced volumes of hippocampal thalamus, amygdala and nucleus accumbens. SCZ have been associated with widespread structural brain abnormalities, but results from neuroimaging studies have been inconsistent.

Although data suggest that non-pharmacologic therapies such as Reminiscence Therapy (RT) and Cognitive Stimulation (CS) can potentially maintain or reverse this trend, cognitive impairment can be a precursor to neurodegenerative processes. This study aimed to assess how an RT and a CS program affected cognition, depressive symptomatology, and quality of life (QoL) in older persons with cognitive decline who attended community support institutions in central Portugal. For seven weeks, a quasi-experimental study with two arms (RT and CS program) was conducted. The intervention was completed by 76 of the 109 older persons who were first screened (50 in the RT program, 26 in the CS program). In both groups, a pre- and post-intervention analysis revealed statistically significant differences in cognition, particularly in older adults' delayed recall ability.

Purpose of clinical trial; This clinical trial is designed to evaluate the effectiveness of 'NeuroAI' prediction accuracy compared to the amyloid PET test results by retrospectively collecting medical data of patients with mild cognitive impairment to evaluate the effectiveness of artificial intelligence-based brain image detection and diagnosis assistance software 'NeuroAI'. Participants; Patient with mild cognitive impairment

Acute Respiratory Distress syndrome (ARDS) is a pulmonary systematic inflammatory response, leading to acute respiratory failure with hypoxia and/or hypercarbia. COVID-19 evokes a viral pneumonia, which may result in ARDS as well. It is not yet clear if COVID-19 disease behaves like the typical ARDS. Corona virus causes primarily deep hypoxia. Hypoxia, on its own, can lead to long term cognitive impairment. However, critical illness also affects long-term neurocognitive functioning. The investigators will be researching the possibility of long-term cognitive impairment in COVID-19 ICU patients, in comparison with reference values of a healthy population as well as the values measured in critically ill patients, admitted not only for respiratory reasons.