View clinical trials related to Neuroimaging.
Filter by: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.
This study aimed to discuss the neuroimaging findings and indications, epidemiological data, laboratory values, and the relationship of these variables with mortality in patients with COVID-19.
Alzheimer's disease (AD) is the most common form of neurodegenerative disorders leading to dementia. Currently, there has been no effective drugs targeting this disease. Functional food is considered as a potentially non-pharmacologic treatment. In this project, the investigators aim to investigate the effectiveness of a mixed functional food with main compositions of ginsenoside, green tea polyphenols and marine collagen peptide on cognition for individuals with subjective cognitive decline (SCD). Taking the randomized, double-blind, placebo-controlled method, participants in the functional food group will take mixed functional foods for three months and those in the placebo group will take placebo. After that, the investigators will investigate the changes of cognitive function. Furthermore, based on the neuroimaging technique, the regulatory mechanism of functional food in intervening SCD will be revealed from the perspective of altered brain functional activity. In conclusion, these results are beneficial for understanding the therapeutic effect of mixed functional foods as a non-drug treatment for early AD and further elucidating the potential brain mechanism, which are of great values in solving scientific and clinical practice issues.
Tone language refers to a language that uses fixed pitch pattern to distinguish words (Yip, 2002). Understanding the functional anatomy of the brain during lexical tone processing will provide useful hints for an effective intervention strategy such as brain stimulation. The present study investigate the cortical organisation of the brain in lexical tone perception of Cantonese speakers by the use of functional magnetic resonance imaging (fMRI).
Alzheimer's disease (AD) is the most common form of neurodegenerative disorders leading to dementia. Currently, there has been no effective drugs targeting this disease. Dysbiosis of the gut microbiota is considered to be associated with AD, and probiotic supplementation may positively affect cognitive function. However, there are few studies involving the relationship between intestinal microorganism and amnestic mild cognitive impairment (aMCI). In this project, taking the method of random, double blindness and control, the probiotic supplemented group with aMCI will take certain Bifidobacterium for a certain time. After that, the investigators aim to investigate the improvement of cognitive function and changes of intestinal microbial flora diversity via combining neuropsychological tests and 16S recombinant deoxyribonucleic acid (rDNA) high-throughput sequencing technique. Furthermore, based on the multi-modal neuroimaging techniques, the regulatory mechanism of intestinal microorganism in intervening aMCI will be revealed from the perspective of brain networks. In conclusion, these results are beneficial for understanding the therapeutic effect of gut microbiota as a non-drug treatment for early AD and further elucidating the potential brain mechanism, which are of great values in solving scientific and clinical practice issues.
In the Ghent University, an upgrade of the MRI-scanner used for research from Siemens Trio Tim to Siemens Prisma Fit is planned in the near future. As a change of MRI hard- and software might influence brain images, it is necessary to evaluate the images before and after the upgrade.
The purpose of the study is to compare vascular and functional neurological changes of acupuncture in patients with Parkinson's Disease and Sleep Disorders. In the randomized controlled clinical trial study, patients meeting the criteria for inclusion will be randomly enrolled and divided into two groups in a 1:1 ratio: the acupuncture group and the sham acupuncture group. The intervention is going to be executed using the acupoints GV14（Dazhui）and GB20 (Fengchi).The acupuncture needles will be inserted to a depth of 0.8 to 1 cm using GV14（Dazhui）and GB20 (Fengchi) in the acupuncture group. The sham acupuncture group's needles will be inserted to a depth of 0.1 to 0.2 cm with nonacupuncture points located 0.5 cm in lateral to the real acupoint or to the right for midline points.During the study, researchers will observe changes in cerebral blood vessels and neuroimaging before and after acupuncture in the two groups. Using multimodal fusion advanced vascular-neuronal imaging techniques could evaluate the effect of acupuncture on brain blood vessels and function in patients with Parkinson's disease and Sleep Disorders and provide an objective neuroimaging basis for assessing the effectiveness of acupuncture.
Two doses (475 mg and 950 mg) of Sideritis Scardica (SS or 'mountain tea') are investigated for cognitive, mood, blood pressure and cerebral blood flow effects in a healthy group of 50-70 yr olds, both acutely and following 28 days of consumption.
Seasonal Affective Disorder (SAD) is a subtype of Major Depressive Disorder, characterized by a recurrent temporal relationship between the season of year, the onset and the remission of a major depressive episode. Estimates of the annual prevalence state that 1-6% of the population will develop SAD with the larger prevalences found at greater extremes in latitude. SAD is most likely triggered by the shortening photoperiod experienced in the winter months leading to a deterioration of mood. Recent cross-sectional neuroimaging studies have found cellular and neurotransmitter changes in response to seasonality, ultimately having an impact on the affect of patients. Conversly, this study aims to investigate the changes in neurocircuitry related to depression and euthymic states. Patients with SAD offer a unique ability to study these changes since they have predictable triggers for the onset of depression (i.e. the winter months) and remission (i.e. the summer months).
The purpose of this study is to 1) determine whether Mindfulness Training for Primary Care (see study "MINDFUL-PC: Integrating Mindfulness Into the Patient-Centered Medical Home - A Pilot Study") engages self-regulation targets such as emotion regulation, attention, and interoceptive awareness; and 2) changes brain activation in neuroimaging tasks before compared to after the training. Neuroimaging fMRI tasks probe mechanisms related to self-regulation, such as attention/inhibition, emotion regulation, self-compassion, interoception and pain regulation. The study will also look at whether chronic disease self-management and successful engagement of self-report and behavioral self-regulation targets (emotion regulation, attention, and interoceptive awareness) relates to the observed brain activation changes after compared to before the mindfulness intervention.