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Connecting BVR, Magventure and Localite – Discussing the Idea

Recently, our lab purchased two MagVenture TMS devices together with the Localite setup for navigation. Both companies are independent, but collaborating strongly. Magventure offers the stimulator, Localite the hardware and software for navigation. The Magventure GUI is very easy to handle and i like how the Localite software allows to use template MRIs. It gives… Read more »

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Neurosensory Effects of Transcranial Alternating Current Stimulation

Probably everyone using transcranial current stimulation has made the experience that stimulation can cause neurosensory effects. This makes blinding the stimulation difficult, or even impossible. Usually, flickering phosphenes and skin sensations are perceived, but we also had subjects reporting feelings of dizziness and pressure. There is evidence that sensations elicited by tDCS fade with stimulation… Read more »

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Bridging the gap between motor imagery and motor execution with a brain-robot interface

Motor imagery and motor execution both cause similar changes in brain oscillations over spatially almost identical cortical areas. Because of this finding, motor imagery has been suggested as a backdoor to the motor system in stroke rehabilitation.  Yet, neuroimaging and lesion studies suggest that the networks involved in motor imagery and execution are at least… Read more »

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Reinforcement learning for adaptive threshold control of restorative brain-computer interfaces

Restorative brain-computer interfaces (BCI) provide feedback of neuronal states to normalize pathological brain activity and achieve behavioral gains. Adaptive algorithms have proven to be powerful for assistive BCIs, but their inherent class switching clashes with the operant conditioning goal of restorative BCIs. Due to the treatment rationale of restorative BCIs, the classifier should be limited… Read more »

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Restorative or assistive BCI? The Argument for a constrained feature space

There is a major aspect which i believe is especially prevalent in the area of BCI for Stroke Rehab. It is the apparent gap between how Brain-computer-Interface (BCI) people, mostly recruited from mathematics and engineering departments and the Neurofeedback (NFB) people, mostly recruited from practitioners and psychologists understand the treatment. In my opinion this distinction… Read more »