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INTRODUCTION: Event-related (de-)synchronization (ER(D)S) is a short‑lasting modulation of specific frequency bands (e.g. alpha band) of EEG, which occurs in response for external stimuli (visual, haptic) or with motor imagery and execution of movements. Since it’s both time- and frequency‑specific, it is typically analysed in time‑frequency space, using Fourier or wavelet methods. AIM(S): As part...
INTRODUCTION: P300 event‑related potential reflects the brain response to external stimuli. Attention paid to one of many repeatedly presented stimuli can be detected from the relative strengths of the responses; if the subject actively counts the occurrences of one of the stimuli (target), specific waveform responsе, namely the P300 potential, may be observed, and it will be absent during the unattended...
INTRODUCTION: Previous research on disorders of consciousness (DOC) phenomena indicated significant changes in circadian activity and sleep architecture that correlated with patient’s diagnosis. Although polysomnography seems to provide a valuable tool in assessing consciousness level, the main obstacle is the absence of specific staging criteria in scoring sleep patterns of patients with DOC and...
We will start with a brief introduction of the state of the art in EEG-based brain-computer interfaces (BCIs). Similar technologies, that is experimental paradigms and signal processing methods derived from the field of BCI, are believed to be promising candidates to solve one of the major problems of contemporary neuroscience, which is the lack of a stable method for assessment of patients with disorders...
“Neuroinformatics encompasses the tools and techniques for data acquisition, sharing, publishing, storage, analysis, visualization, modeling and simulation” (question from http://incf. org). In this presentation we offer freely available solutions for the first six tasks in the field of biomedical time series. Svarog (Signal Viever, Analyzer and Recorder on GPL, http://svarog. pl) is a multiplatform,...
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