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Patients with disorders of consciousness (DOC) cannot reply to questions or clinical assessments using voluntary motor control, and therefore it is very difficult to assess their cognitive capabilities and conscious awareness. Patients who are locked-in (LIS) are instead fully conscious, and they can communicate with their preserved eye movements. However, when the residual oculomotor activity is...
Brain-Computer Interfaces (BCIs) can provide users with communication, control, and other capabilities based on specific types of brain activity. In the “P300 BCI” approach, a user views a matrix containing letters or other characters and silently counts each time a target item flashes.
EEG based Brain-Computer Interfaces (BCIs) often use evoked potentials (P300), steady state visual evoked potentials (SSVEP) or motor imagery (MI) for control strategies. This study investigated maximum and mean accuracy of a MI based BCI using Common Spatial Patterns (CSP). Twenty healthy people participated in the study and were equipped with 64 active EEG electrodes. They performed a training paradigm...
Each activated motor unit produces an electrical signal. By summing the signals produced at the level of each activated motor unit we achieve an electrical signal that can be recorded as electrical waves. In this study we aimed to identify a correlation between different types of muscular contractions and the muscle electrical activity. 23 healthy persons aged between 19 and 52 years participated...
Brain-Computer Interfaces (BCI) for communication purposes are usually controlled via a P300 paradigm. There, a high number of different classes is presented to the user, thus enhancing the information transfer rate in comparison to e.g. motor imagery based BCIs. During the last years several P300 speller, based on visual stimulation, were developed. For people with visual impairments another stimulation...
Both, functional electrical stimulation (FES) systems and brain-computer interfaces (BCI) based rehabilitation are earning year by year more involvement within rehabilitation field. This paper presents the coupling of a motor imagery based BCI system with a multichannel neurostimulator in order to control each of the hands opening and lower limb knees extension in paralyzed people. The specialty of...
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