Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Combined Transcranial Direct Current Stimulation and Motor Imagery-based Robotic Arm Training for Stroke Rehabilitation - a Feasibility Study
Brief Summary: Stroke is the most common cause of adult disability. Current treatments for functional loss of the upper extremity post-stroke remain limited in efficacy, particularly for those with moderate to severe impairment.

Previous studies have demonstrated the efficacy of transcranial direct current stimulation (tDCS) for motor recovery post-stroke, a technique of neuromodulation. Motor imagery is effective to enhance motor recovery, with activation of neural pathways similar to that of motor execution. This treatment is accessible to more severely impaired stroke survivors. Our previous studies have demonstrated feasibility and efficacy of motor imagery-based brain computer interface (MI-BCI) for post-stroke motor impairment, in which motor imagery is detected by surface EEG and translated to execution of the target movement with the aid of an arm robot (MIT-Manus).

In this study, we investigate the feasibility of combining robot-assisted MI-BCI training, with tDCS to facilitate post-stroke motor recovery in moderate to severe impairment of upper extremity function. We hypothesise that both tDCS-BCI and sham-BCI will improve motor function in the stroke-affected arm; but that tDCS-BCI will be more effective than sham-BCI. Our secondary aim is to gain insight into the neurophysiological mechanism by comparing the cortical excitability changes following sham-BCI vs tDCS-BCI, using transcranial magnetic stimulation (TMS).

We will conduct a randomized, double-blinded study with MI-BCI combined with tDCS (tDCS-BCI) vs MI-BCI combined with sham-tDCS (sham tDCS-BCI). Subjects will undergo 10 sessions of tDCS each lasting 20 minutes, followed by 40 minutes of robot-assisted MI-BCI training at each session. Primary outcome will be functional ability measured by upper extremity component of the Fugl-Meyer Assessment. Secondary outcome measures will be the Box \& Block Test, Modified Ashworth Score (measuring spasticity), grip strength and measures of brain activity including transcranial magnetic stimulation (TMS) measures of magnetic resonance imaging (MRI) measures including functional MRI and diffusion tensor imaging (DTI).

This study will be important to develop a new and effective treatment (tDCS-BCI) for post-stroke motor impairment.


Options:
A: Arm Label: real-tDCS with MI-BCI; Type: ACTIVE_COMPARATOR; Interventions: Device: real-tDCS with MI-BCI | Arm Label: sham-tDCS with MI-BCI; Type: SHAM_COMPARATOR; Interventions: Device: real-tDCS with MI-BCI | Intervention Type: DEVICE; Name: real-tDCS with MI-BCI; Assigned to Arm(s): real-tDCS with MI-BCI, sham-tDCS with MI-BCI
B: Arm Label: Action Training; Type: ACTIVE_COMPARATOR; Interventions: Other: Action Training | Arm Label: tDCS; Type: EXPERIMENTAL; Interventions: Other: Transcranial direct current stimulation | Arm Label: Action Training + tDCs; Type: EXPERIMENTAL; Interventions: Other: Transcranial direct current stimulation, Other: Action Training | Arm Label: Control training; Type: PLACEBO_COMPARATOR; Interventions: N/A | Intervention Type: OTHER; Name: Transcranial direct current stimulation; Assigned to Arm(s): Action Training + tDCs, tDCS | Intervention Type: OTHER; Name: Action Training; Assigned to Arm(s): Action Training, Action Training + tDCs
C: Arm Label: usual management; Type: OTHER; Interventions: Other: no physical activity | Arm Label: physical training; Type: EXPERIMENTAL; Interventions: Other: physical activity | Intervention Type: OTHER; Name: no physical activity; Assigned to Arm(s): usual management | Intervention Type: OTHER; Name: physical activity; Assigned to Arm(s): physical training
D: Arm Label: Prism adaptation + anodal tDCS; Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Prism Adaptation, Device: Anodal tDCS | Arm Label: Prism Adaptation + Sham tDCS; Type: PLACEBO_COMPARATOR; Interventions: Behavioral: Prism Adaptation, Device: Sham tDCS | Arm Label: Prism adaptation + no tDCS; Type: PLACEBO_COMPARATOR; Interventions: Behavioral: Prism Adaptation | Intervention Type: BEHAVIORAL; Name: Prism Adaptation; Assigned to Arm(s): Prism Adaptation + Sham tDCS, Prism adaptation + anodal tDCS, Prism adaptation + no tDCS | Intervention Type: DEVICE; Name: Anodal tDCS; Assigned to Arm(s): Prism adaptation + anodal tDCS | Intervention Type: DEVICE; Name: Sham tDCS; Assigned to Arm(s): Prism Adaptation + Sham tDCS

Answer: A