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Filter by:The study will examine whether the benefits of brain stimulation on mental functioning can be enhanced if an individual is actively engaging the target brain networks while receiving brain stimulation. The study includes two separate sessions and people will complete either a cognitive task or a perceptual task while receiving transcranial magnetic stimulation. The study will measure change in brain function with EEG.
This project aims to clarify the mechanisms underpinning the acute analgesic effect of exercise in healthy humans-a phenomenon called "Exercise-induced hypoalgesia" (EIH). This study will characterize, using a within-subject cross-over design, the effects of a single session of aerobic exercise vs. a control condition on the sensitivity to stimuli preferentially activating mechano vs. heat-sensitive nociceptors of the skin vs. muscle, within vs. outside exercising body parts. The investigators hypothesize (1) that EIH will be greater in the exercise session compared to the control session, (2) that EIH will be greater at the local site compared to the remote site if local changes in nociceptive sensitivity contribute to EIH, and (3) that exercise will preferentially affect blunt pressure-induced pain if EIH involves specific changes in sensitivity of muscle nociceptors.
The purpose of this study is to assess what macitentan and its active metabolite (aprocitentan) does to the body after single dose administration of macitentan in Chinese healthy adult male participants.
The aim of this study is to assess the effectiveness of an AR/VR oral care training system on the knowledge, attitudes, self-efficacy, and behavioral intentions of students majoring in geriatric care.
The aim of this study is to develop and validate an adequate protocol of volatolome (volatile metabolites) measurement in breath of human volunteers (18-65 years) to study gut microbiome - nutrition - host interactions in a general healthy population. For this purpose, breath volatile metabolites (BVM) will be analyzed throughout test days in fasting state and after standardized meals using selected ion flow tube mass spectrometry (SIFT-MS). In addition, gut microbial functions linked notably to hydrogen/methane production, carbohydrates utilization (CAZymes), and in the production of other volatile metabolites of interest (i.e. indole, fatty acid derivatives, ...) will be unraveled through microbiome sequencing data analysis (in silico), metabolomic analyses and measurement of enzymatic activities from saliva, urine and/or fecal samples.
This is a phase 1, randomised, first-in-human, double-blinded, placebo-controlled, SAD (Single Ascending Dose) and MAD (Multiple Ascending Dose) study to assess the PK, safety, and tolerability of XH-S003 in healthy volunteers. In addition, this study evaluates the effects of food on XH-S003 under a two-period, cross-over study setting.
Sometimes, it is necessary to re-learn a previously learned movement behavior, for example, a bad posture during the golf drive or while playing the piano. Unlearning or relearning an intensively trained behavior is particularly important if the behavior is hampering recovery, for example, in chronic pain or after a stroke. With this pilot study, the brain mechanisms that control the change of pre-existing stable memories of a motor skill will be tested with electroencephalography (EEG). Non-invasive brain stimulation will be used to modulate these brain mechanisms and test if it is possible to change the pre-existing motor memory and the learning of a new motor skill.
Even though extensive research on the multisensory integration of auditory and visual stimuli has been carried out, the mechanisms of integration of tactile stimuli with other senses remain less known and understood. Furthermore, the brain mechanisms associated with active and dynamic tactile exploration of a surface have not been extensively studied. In the context of the development of human-computer interaction (HCI) technologies, understanding these mechanisms remains of vital importance for the realization of multisensory devices and to improve the user experience of the general population, but also to benefit the use by clinical populations, e.g., people with visual impairments. The planned experiment aims to study multisensory integration during the active and dynamic tactile exploration of a surface (a natural texture or the screen of a multisensory tactile device). The primary hypotheses are that simultaneous auditory and/or visual stimulation during active tactile exploration of a surface will help participants form a mental representation of the shape or texture they are exploring, and that the recorded brain activity will be compatible with multisensory integration mechanisms at the level of the cerebral cortex. The planned project will include (1) behavioral (psychophysical) experiments, to assess participants' performance in discriminating the spatio-temporal location of tactile, auditory, visual, audio-tactile, audio-visual, and audio-visual-tactile on the screen of a multisensory tactile device and (2) surface electroencephalography (EEG) recording experiments, which will be employed to study the cortical mechanisms of multisensory integration during active and dynamic tactile exploration .
Using magnetic resonance (MR) imaging or spectroscopy as part of clinical research typically involves developing new MR protocols. Although some of this work is done by scanning artificial 'phantoms', volunteer studies are normally needed to configure and validate new protocols appropriately. Developing new MR protocols and techniques is also useful in its own right. The volunteer scanning described in this application will provide data to support this type of methodological research into new scanning and image processing techniques: improving the speed, quality, and range of measurements possible with the scanner. With proper safety and screening procedures, MR has no known side-effects, and has been performed on millions of human subjects worldwide without ill effect. There are well-established contraindications for MRI, and screening procedures are already in place in the MR unit at UCLH to exclude such subjects and ensure the safety of subjects. With these, and the MR scanner's built in safety mechanisms, residual risk is low. Many other trusts with active MR research have previously made similar applications to this related to volunteer MR scanning for pilot work and methodological research Although scans may obtained as part of several research projects, in each case it is only the scanning technique (the programmed sequence of data acquisition and processing steps) which will vary, along with the body region to be imaged. The volunteer experience will be very similar, and all ethical issues, including the information sheet and consent form, will be identical. These scans are for methodological research on the MR techniques themselves, and will be never form part of the volunteer's own healthcare. Separate ethical permission is sought for any study which does not match the above criteria.
This study is a phase 1 single dose escalation study of SHR-2001 in healthy subjects. The purpose of the study is to evaluate the safety, tolerability,pharmacokinetics and Pharmacodynamics of SHR-2001 in healthy subjects