Traumatic Brain Injury Clinical Trial
Official title:
Targeted Noninvasive Brain Stimulation (T-NIBS) for Upper Extremity Motor Rehabilitation in Acquired Brain Injury (ABI) Patients
Acquired Brain Injury (TBI) is a serious medical and health problem in the US. Individuals with an acquired brain injury due to stroke and Traumatic Brain Injury (TBI) commonly suffer from upper extremity physical impairments that persist even after years of injury; these deficits are attributed to the damage to brain structure and changes in structural and functional connectivity. Although the conventional rehabilitation approaches are helpful in assisting motor recovery often there is a complaint of fatigue due to the repetitive tasks and also, nearly half of the ABI survivors do not regain their ability to use their arms for daily activities. To address this issue, Dr. Shenoy's proposed study will investigate the combined use of individually targeted non-invasive brain stimulation and music-assisted video game-based hand exercises to achieve functional recovery. Further, the project will also investigate how the intervention modulates brain activity (recorded using EEG) in terms of brain connectivity before- and after the -intervention. In the end, this study will allow us to understand the cortical dynamics of ABI rehabilitation upon brain stimulation. Extending further, this could pave the way to advance the knowledge of behavioral and neural aspects of motor control in patients with different types of neuromuscular disorders.
Persistent physical deficits associated with upper extremities including motor weakness, spasticity, and the lack of bimanual coordination of fingers, hands, and arms are particularly problematic as it results in serious disruption of many instrumental activities of daily living. Conventional physical and occupational therapy help improve motor recovery in ABI but nearly 50% of the patients still suffer from a significant level of upper limb motor impairment following rehabilitation, undermining the need for novel therapeutic approaches to improve recovery. Non-invasive brain stimulation (NIBS) techniques such as Transcranial Direct Current Stimulation (tDCS) have shown great promises as adjuvant means to improve the efficacy of neurorehabilitation in Stroke. However, the benefit of combining NIBS with regular motor training has not been extensively studied in the TBI population. One of the inherent challenges with the approach in dealing with the heterogeneity of the TBI population in terms of the type of injury and the location of the affected cortical region which warrants personalized intervention than a one-size-fits-all approach. Therefore, we propose to develop an individually targeted high-definition tDCS (HD-tDCS) protocol to optimize its effect and achieve maximal upper limb motor recovery in each patient by stimulating the hand knob region which is close to precentral gyrus. HD-tDCS will be combined with MusicGlove exercises (music-assisted repetitive finger movements) to improve the neuroplasticity (adaptation and reorganization to compensate for the initial insult and to attempt to restore function) and fine motor learning while keeping patients engaged. Using a double-blind design, 24 individuals with an acquired brain injury will be randomized to either receive real or sham HD-tDCS during MusicGlove therapy to assess the added benefit of HD-tDCS. In addition, we aim to investigate the underlying neural mechanism of HD-tDCS on motor recovery by studying change in EEG based brain connectivity because of the intervention. The short-term significance of this project will be to validate the effectiveness of HD-tDCS in ABI neurorehabilitation and help better understand the underlying cortical mechanism of the improvement. In the long-term, the findings of this pilot study will contribute toward the development of an optimal patient-specific rehabilitation therapy to maximize motor recovery in individuals with neuromuscular disorders. ;
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