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After having included the most improved patients by DBS among those implanted in Bordeaux Hospital University, and having defined the most active plots on tremor by its prospective grading on Fahn-Tolosa-Marin (FTM) scale and accelerometry, coordinates of active plots and landmarks will be calculated on post-operative imaging. Association between landmarks and active plots coordinates will be modelled with machine-learning algorithms. The aim is to retrieve the position of the VIM on the basis of the landmarks coordinates.
This is an open-label study designed to evaluate the safety, tolerability and efficacy of CAD-1883, a positive allosteric modulator of the SK channel, administered twice daily orally to adult patients with ET. Patients with the diagnosis of ET based on the Movement Disorder Society (MDS) criteria with a documented severity of tremor based on the clinician-administered TETRAS Performance Subscale are eligible to be enrolled in the study.
The goal of this study is to characterize biophysiolgoical signals as a comprehensive profile of the nervous systems in order to understand interactions between the brain and body, while an individual performs naturalistic behaviors (ex. walking, pointing) and while breathing at a slow controlled pace. The investigators aim to study these interactions among a variety of populations, from healthy individuals to those with disorders such as Autism Spectrum Disorder(s), including those who may also have an ADHD (Attention-deficit/hyperactivity disorder) diagnosis, Asperger's Syndrome, Alzheimer's Disease, and/or Fragile X syndrome
The primary objective of this study is to characterize real-world clinical outcomes of Deep Brain Stimulation (DBS) using retrospective review of de-identified patient records.
This observational and experimental study seeks to establish a Smart Device System (SDS) to monitor high-resolution handtremor-based data using Smartphones, SmartWatches and Tablets. By doing this, movement data will be analyzed in depth with advanced statistical and Deep-Learning algorithms to identify new clinical phenotypical characteristics Parkinson's Disease and Essential Tremor.
The aim of this study is to observe the efficacy of Deep Brain Stimulation in the treatment of Parkinson's disease,Essential Tremors and Dystonia in our locality.
Focused ultrasound for Essential Tremor is an FDA approved treatment performed by neurosurgeons at the Ohio State Center for Neuromodulation that utilizes ultrasound technology to create a lesion in the thalamus of Essential Tremor patients. In order to improve long term effectiveness and reduce potential for side effects, brain imaging may be used to examine the functional connectivity of certain brain networks during the procedure. In order to investigate functional connectivity changes with these long term goals in mind, in this study neuroimaging will be taken immediately before, immediately after, and 24 hours after the focused ultrasound procedure for 10 Essential Tremor patients. One series of neuroimaging will also be conducted for 20 healthy control subjects to serve as a comparison. This study will not introduce any risks above standard of care, and may lead to improved long term outcomes of patients undergoing the Focused Ultrasound procedure.
Essential tremor (TE) is the most common abnormal movement of the adult. His diagnosis is based on a bundle of clinical arguments (Movement Disorders Society, 1998). Well characterized in the adult, little data is available concerning child. The objective of this work is (1) to define the demographic and clinical characteristics of the TE of children and adolescents, (2) to determine the electrophysiological characteristics in the child, (3) evaluate the functional impact of TE, and assess the functional impact of TE, and assess the current management modalities of TE in children and adolescent.
The objective of this prospective, multi-site, single-arm, open-label study is to capture the safety and efficacy (outcome) of bilateral staged Exablate treatment in subjects with bilateral medication-refractory essential tremor (ET). The staged second procedure will be performed at least 9 months after the first side. The benefit of real-time feedback will allow the physician to maximize benefit without jeopardizing safety. This study is designed as a prospective, open-label, single arm, multi-site study design.
Transcranial alternating current stimulation (tACS) is a noninvasive neuromodulation method that works by passing alternating electric current between electrodes where at least one of them is attached to the head. While tACS applied over the motor cortex at the general applied amplitude (1 mA) and using patch electrodes has been shown to entrain physiological tremor in healthy volunteers, the aim of this study is to test the feasibility of using high-amplitude tACS and to assess the effect of different electrode montages and stimulation sites in entraining physiological tremor. First, 10 subjects (arm 1) will be stimulated with 2 mA current amplitude applied between saline soaked patch square electrodes and comparison will be done between motor cortex stimulation and peripheral cortex stimulation. Then, 10 subjects (arm 2) will be stimulated using focused 4x1 montage with gel-filled cup-electrodes and 5 mA amplitude and comparison will be made between motor cortex and occipital cortex stimulation. Three outcome measurements will be measured during the experiments which are: tremor entrainment, phosphene intensity and phosphene threshold.