Download e-book for kindle: Brain-computer interfaces : revolutionizing human-computer by Bernhard Graimann, Brendan Z. Allison, Gert Pfurtscheller

By Bernhard Graimann, Brendan Z. Allison, Gert Pfurtscheller

ISBN-10: 3642020909

ISBN-13: 9783642020902

ISBN-10: 3642020917

ISBN-13: 9783642020919

A brain-computer interface (BCI) establishes a right away output channel among the human mind and exterior units. BCIs infer consumer motive through direct measures of mind job and therefore let verbal exchange and keep an eye on with out circulation. This publication, authored by means of specialists within the box, offers an obtainable advent to the neurophysiological and signal-processing heritage required for BCI, provides state of the art non-invasive and invasive techniques, supplies an outline of present and software program suggestions, and studies the main attention-grabbing in addition to new, rising BCI purposes. The e-book is meant not just for college kids and younger researchers, but additionally for rookies and different readers from diversified backgrounds willing to profit approximately this important medical endeavour.

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While the number of brain signal features that might be useful for a BCI is large, only a few have actually been tested for this purpose. Fig. 1 Recording sites for electrophysiological signals used by BCI systems. (a):Electroencephalographic activity (EEG) is recorded by electrodes on the scalp. (b): Electrocorticographic activity (ECoG) is recorded by electrodes on the cortical surface. R. B. Boulay 2 Brain Signals for BCIs and Their Neurophysiological Origins This section discusses the principal brain signal features that have been used in BCIs to date.

Neuro-rehabilitation of stroke is another possible BCI neurorehabilitation application. Here, the goal is to apply neuro-physiological regultion to foster cortical reorganization and compensatory cerebral activation of brain regions not affected by stroke [54]. Chapter Brain–Computer Interface in Neurorehabilitation of this book discusses this new direction in more detail. 5 Summary A BCI is new direct artificial output channel. A conventional BCI monitors brain activity and detects certain brain patterns that are interpreted and translated to commands for communication or control tasks.

53, 54–59]. Several laboratories have shown that people can learn to control mu or beta rhythm amplitudes in the absence of movement or sensation. With the BCI system of Wolpaw, McFarland, and their colleagues [59–63], people with or without motor disabilities learn to control mu- and/or beta-rhythm amplitudes. g. Fig. 2b). , about 80%) acquire significant one-dimensional control over 3–5 24-min sessions. Multi-dimensional control requires more extensive training. Users initially employ motor imagery to control the cursor, but, as training proceeds, imagery usually becomes less important, and users learn to move the cursor automatically, as they would perform a conventional motor act.

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Brain-computer interfaces : revolutionizing human-computer interaction by Bernhard Graimann, Brendan Z. Allison, Gert Pfurtscheller

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