View clinical trials related to Inhibition.
Filter by:It has been indicated in recent research that Mindfulness-based interventions may offer possibilities of promoting human stress processing and reducing anxiety or depression. They also appear to positively influence cognitive performance. One mindfulness-based intervention next to a variety of others is yoga, a combination of physical, spiritual, and mental practices of Indian origin that arose to alleviate suffering and enhance psychological and physical well-being. The goal of the study is to find out how Hatha Yoga, the most common form of yoga, consisting of stretches, yoga postures and conscious breathing, affects emotional and cognitive processes. An essential part of yoga seems to be the increase of self-regulation and consequently the regulation of stress processing and of cognitive processes in general. Building on the Attentional Control Theory, it is hypothesized that anxiety and stress limit inhibitory function - the ability to block distracting, irrelevant information - and also impair the shifting of attention that normally accompanies smooth switching between different tasks and their processing requirements. In a randomized controlled trial with an experimental and a waiting group, the investigators aim to investigate whether active participation in a 60-minute hatha yoga class (intervention) at least three times a week for two months leads to less experienced stress and improves inhibition and attentional shifting. The intervention period with pre- and postmeasurements is expected to start in early January 2022 and end in December 2022. To measure the effect of the intervention, the investigators use three experimental test tasks, one each to examine inhibition function (here, measured by distractor interference in visual search), switching between different tasks or sensory modalities (here, collected by comparing performance after passagewise alternation vs. repetition of a sound vs. light discrimination), and alternation between different stimulus features (here, determined by comparing passagewise repetition vs. alternation of target stimulus color in visual search). In all of the experimental tasks, behavioral data (reaction times and error rates) and, in two, additional electrophysiological measures (event-related potentials) are collected using EEG. To investigate the role of stress the investigators use questionnaires as well as biological stress markers from saliva. In addition, participants will receive a link to questionnaires to complete by the start of the yoga intervention. On top, trait mindfulness will be examined as a potential mechanism underlying the effects of yoga practice on attention and stress. The subjects' trait mindfulness will be assessed by questionnaire as well.
This study aims to examine whether listening to natural sounds in a noisy (traffic) environment compared to traffic noise only impacts behavioural, cognitive, affective, and physiological markers associated with attention restoration. Attention restoration will be examined as an aspect of cognitive fatigue.
Inhibitory control refers to the conscious and voluntary suppression of predominant responses when they are automatic, inappropriate, or incorrect. Inhibitory control plays a key role in self-regulation and self-control behaviors in many different areas of everyday life. During aging, their decline would impact executive functioning and mental health. Recently, physiological training methods including heart rate variability biofeedback (HRV-BF), based on heart rate and respiration measurements, and hemoencephalography biofeedback (nirHEG NF), based on the hemodynamic response of some prefrontal regions, have proven to have a positive impact on executive functions. In this study, subjects of the experimental group were exposed to biofeedback training during 10 sessions, once a week, and their results compared to those of the control group, which did not receive biofeedback training. This study aims to explore the impact of training that combines two innovative techniques, such as heart rate variability biofeedback and hemoencephalography biofeedback on the inhibitory control of older adults. We expect positive effects of biofeedback training on the inhibition tasks and the targeted physiological parameters. Primary objective - We intend to demonstrate that heart rate variability biofeedback training coupled with hemoencephalography biofeedback training can be effective methods to counteract the decline of inhibitory control in older adults. Secondary objective - We intend to demonstrate that heart rate variability biofeedback and hemoencephalography biofeedback can effectively increase heart rate variability and blood flood oxygenation.
Cannabidiol (CBD) is a phytocannabinoid that is one of 113 identified cannabinoids in the cannabis plant. It is derived from the hemp plant, and may treat conditions like pain, insomnia, and anxiety. CBD is a critical component of medical marijuana and does not cause the "high" typically associated with cannabis. According to the World Health Organization, CBD has shown no evidence of abuse or dependence potential. However, to the investigator's knowledge, there have not been many acute clinical studies to characterize the effects of CBD in the brain. Despite the rapid influx in CBD readily available to the public, very little is known about such effects. Some studies have shown alterations in resting state connectivity, while others have described changes in specific regions of the brain, or in networks associated with various cognitive functions. For example, CBD has been shown to increase fronto-striatal connectivity and reduce mediotemporal-prefrontal connectivity, suggesting that CBD may affect brain regions involved in salience processing. Unfortunately, few studies have examined CBD in isolation. Additionally, several studies have suggested that CBD may have a neuroprotective effect when it comes to individuals at high risk for psychiatric conditions. In this study, the investigators propose an acute administration, double-blind, placebo-controlled study in which 100% THC-free CBD will be compared to placebo (https://foliumbiosciences.com/). To the investigator's knowledge, the acute effects of this specific product have not been tested. Specifically, the investigators will examine: 1) the neurometabolic and neurophysiological effects of CBD compared to placebo and 2) the behavioral effects of CBD on measures of working memory and response inhibition. Participants will be recruited to take encapsulated, THC-free CBD provided by Folium Biosciences, in which they will have a pre- and post-ingestion scan. Each participant will have a 72-hour washout period after which they will be asked to come back for a placebo scan (however, the order will be counterbalanced so that equal numbers of participants will receive placebo/supplement and supplement/placebo). Individuals will be randomized into the supplementation group, as well as the order.
Takayasu arteritis (TAK) is a rare chronic inflammatory arteritis, which lacks an effective well-accepted intervention strategy. Here we tried to classify TAK patients in 3 levels, including mild, moderate, and severe, and prescribe methotrexate and tofacitinib randomly in mild and moderate patients, to observe the relatively better treatment strategy, facilitating better intervention strategy in TAK patients.
Investigators conducted a single center, two-phased, open, controlled pharmacokinetic study to investigate the drug-drug interaction potential of metamizole. For this reason, healthy male volunteers were screened. Enrolled participants were phenotyped on day 1 using the Basel Cocktail (phenotyping cocktail containing specific substrates for CYP1A2, CYP2B6, CYP2C9, CYP2C19, CYP2D6, CYP3A4). After, they received metamizole treatment for 8 days (3 grams per day). On the 8th day (day 9), they were phenotyped again with the Basel Cocktail and the respective phenotypes (d1 vs. d9) were compared.
To get a better understanding of the interaction between metabolism, neural responses, cognitive processes and appetite the investigaters will examine the effect of food consumption on cognitive processes. The investigaters will look at the effect of satiation on cognitive performance on both a behavioural and neuronal level. In this study participants will undergo functional magnetic resonance imaging (fMRI) measurements while performing a food reward and inhibition task, and in addition perform a memory, working memory and delay discount task, once when hungry and once when full.
The proposed research will follow healthy weight children who vary by family risk for obesity to identify the neurobiological and appetitive traits that are implicated in overeating and weight gain during the critical pre-adolescent period. The investigator's central hypothesis is that increased intake from large portions of energy dense foods is due in part to reduced activity in brain regions implicated in inhibitory control and decision making, combined with increased activity in reward processing pathways. To test this hypothesis, the investigators will recruit 120 healthy weight children, aged 7-8 years, at two levels of obesity risk (i.e., 60 high-risk and 60 low-risk) based on parent weight status. This will result in 240 participants: 120 children and their parents.
Inhibition control deficits is a major risk factor in the transition to the act in suicidal patients. Neuroimaging studies have shown that this failure was associated with hypoactivity in the prefrontal cortex (PFC), a brain area involved in the control of impulsivity. It was recently shown that a noninvasive brain stimulation session applied on the PFC reduces transiently impulsivity in healthy volunteers. Noninvasive brain stimulation modulates the activity and connectivity of neural network connected to the stimulation site. The investigators assume that a repetition of noninvasive brain stimulation sessions on the PFC will allow a more intense and longer lasting effect on impulsivity and cognitive control in healthy volunteers compared to a single session and to placebo stimulation. The investigators assume that this behavioral change will be accompanied by a change in brain activity measured by resting EEG for the patients in the active group. A more intense and longer lasting effect is an essential step to transfer these results to patient populations. The main objective is to study the effect of bilateral stimulation of the PFC by transcranial random noise stimulation (tRNS) on the inhibition control measured by the cognitive motor inhibition capacity (Go NoGo test). The secondary objectives are to study the effect of tRNS on verbal inhibition (measured with the Hayling test); on anxiety (measured with the State-trait anxiety inventory (STAI)),on angry (measured with the State-trait anger expression inventory (STAXI)) on verbal and nonverbal inhibition (measured by the Stroop test), on impulsive behavior (measured by the Barrat impulsiveness scale (BIS 10)) and on the neuronal electrical activity measured by EEG.