View clinical trials related to Impulsivity.
Filter by:The aim of the following study is to investigate which is the best region of interest (ROI) for a functional near-infrared spectroscopy (fNIRS)-based neurofeedback (NF) training for highly-impulsive individuals (and consequently also patients with attention-deficit/hyperactivity disorder, ADHD): the dorsolateral prefrontal cortex (DLPFC) or the inferior frontal gyrus (IFG). Generally, NF trainings aim to improve the neurophysiological as well as cognitive-behavioral deficits observed in many neuropsychiatric disorders and were shown to constitute an effective complementary treatment option for patients with ADHD. Some previous studies used the DLPFC as a ROI for NF training, while others focused on the IFG as the main target region. However, so far, no study has directly compared the effectiveness of NF trainings targeting the DLPFC vs. IFG using the same protocol or the specificity of regulation efforts between these two areas using fNIRS. Therefore, the aim of the current study is to compare the effectiveness of fNIRS-NF using the DLPFC as a ROI with fNIRS-NF using the IFG as a ROI in a randomized controlled study design with highly-impulsive, healthy participants. Furthermore, the investigators aim to test the effect of fNIRS-NF training in the context of stress. Previous studies reported that there is a strong connection between ADHD and stress. However, the effect of fNIRS-NF training for the adaptation to stressful situations is uncertain. To this end, the investigators will assess the brain activity of participants before and after an fNIRS-NF training period during performance of a Go/NoGo task, an n-back task and The Trier Social Stress Test (TSST). It is hypothesized that both trainings will be successful in reducing impulsive behavior; however, in the pre/post testing, specific effects of fNIRS-based NF of the DLPFC are expected on working memory function and of fNIRS-based NF of the IFG on inhibitory control (Go/NoGo task). Correlations between both functions and impulsive symptoms will give an indication which training ROI may be more promising for the treatment of (specific subgroups of) ADHD. Correlations between regulation of different training ROIs will indicate the specificity of feedback regulation of circumscribed cortical areas.
Even when they know it can improve health, many individuals with loss of control eating struggle when they are trying to make and sustain new health habits for weight loss and maintenance of weight loss. Impulsivity, characterized by lack of foresight and planning and excessive risk taking, and compulsivity, characterized by inability to break old habitual behaviors, may play a role in refractory obesity. The primary objective of this pilot study is to investigate the effect of a novel neuroplasticity based intervention, cognitive training coupled with transcranial direct current stimulation (tDCS), on measures of impulsivity and compulsivity in individuals with obesity.
ADHD is a neurodevelopmental disorder characterized by persistent symptoms of inattention and/or hyperactivity and impulsivity that are present before age 18. These symptoms must be evident across ADHD treatment is currently based on a multimodal approach with the combination of psychotherapy and pharmacotherapy, but no reliable markers of treatment response have been identified yet and 20-35% of subjects in clinical trials may have an inadequate response to the treatment The gut microbiome refers to the microbial ecosystem found in the gastrointestinal system of the human species Probiotics are a type of beneficial bacteria that improve health and facilitate intestinal microbial balance Increasing evidence suggests that the gut microbiota plays a key role in the gut-brain communication axis by influencing metabolism, inflammation, the hypothalamic-pituitary-adrenal axis, and neurotransmission multiple domains and cause Impairment in functioning in order to meet the diagnostic criteria for ADHD
The purpose of the study is to examine the effects of cognitive training on emotion regulation, impulse control, and aggression in people with schizophrenia. The study compares a combination of computerized cognitive remediation and social cognition training (CRT+SCT) to cognitive remediation alone (CRT). Study outcomes include multiple measures of aggression, emotion regulation, impulse control, cognition, and symptoms.
The objective of this study is to determine the relations among food insecurity status, obesity, and impulsive food choice patterns and to test the extent to which a mindful eating strategy reduces impulsive choice for food. The central hypothesis is that food-insecure individuals will demonstrate more impulsive food choice patterns and demonstrate a greater likelihood of obesity than individuals who are food secure. Two specific aims are proposed: Specific aim #1: Determine the relation between food insecurity, obesity, and impulsive food choice patterns in women. The working hypothesis is that food-insecure individuals, especially those that are obese, will exhibit more impulsive food choice patterns than food-secure individuals. Specific aim #2: Determine the efficacy of an extended mindfulness-based eating strategy on impulsive choice patterns among food insecure women. The working hypothesis is that mindful eating will reduce impulsive food choice patterns relative to baseline and control conditions, and will persist to follow-up. The investigators expect mindful eating to reduce impulsive choice compared to control conditions, despite food security status.
This is a study evaluating the relationship between prenatal nutrition and neural development in infants born to mothers with Attention Deficit Hyperactivity Disorder (ADHD). We are hypothesizing that women randomized to a whole food, nutrient-dense diet during their 3rd trimester of pregnancy will have infants with more advanced neural development as compared to infants born to mothers receiving standard-of-care treatment.
Examine the interaction between stimulants, such as cocaine and methylphenidate, and impulsivity.
The aims of this project are to determine if dietary supplementation with NOPE-EGCG (PhosphoLeantm, 30mg NOPE+20mg EGCG per capsule) can: - rescue striatal function, - increase adherence to a diet, - reduce weight-gain after a diet, - improve performance on impulsivity, go/no-go tasks, and negative outcome learning, and - shift fat and sweet preference in overweight/obese human subjects Secondary hypotheses: Baseline brain; perceptual and cognitive measures will be associated with diet, insulin sensitivity and may vary with genotype (TaqA1 1A polymorphism).
The aims of this project are to: 1. Determine if 3-weeks dietary supplementation with NOPE-EGCG (PhosphoLEANtm, 85mg NOPE+50mg EGCG per capsule) versus a placebo will improve performance on impulsivity, go/no-go tasks and negative outcome learning in heavy drinkers. 2. Evaluate whether supplementation with NOPE-EGCG versus placebo results in reductions in alcohol consumption. 3. Preliminary data in the rodent model suggests that rats treated with OEA shift preference for lower fat test stimuli. In aim 3 we will Determine if 3-weeks of supplementation with PhosphoLEAN shifts fat preference towards lower fat test puddings.