The thought translation device: a neurophysiological approach to communication in total motor paralysis

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1999
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Kübler, Andrea
Kotchoubey, Boris
Hinterberger, Thilo
Ghanayim, Nimr
Perelmouter, Juri
Fritsch, Christoph
Taub, Edward
Birbaumer, Niels
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Experimental brain research. 1999, 124, pp. 223-232. Available under: doi: 10.1007/s002210050617
Zusammenfassung

A thought translation device (TTD) for braincomputer communication is described. Three patients diagnosed with amyotrophic lateral sclerosis (ALS), with total motor paralysis, were trained for several months. In order to enable such patients to communicate without any motor activity, a technique was developed where subjects learn to control their slow cortical potentials (SCP) in a 2-s rhythm, producing either cortical negativity or positivity according to the task requirement. SCP differences between a baseline interval and an active control interval are transformed into vertical or horizontal cursor movements on a computer screen. Learning SCP self regulation followed an operant-conditioning paradigm with individualized shaping procedures. After prolonged training over more than 100 sessions, all patients achieved self-control, leading to a 70 80% accuracy for two patients. The learned cortical skill enabled the patients to select letters or words in a language-supporting program (LSP) developed for inter-personal communication. The results demonstrate that the fast and stable SCP self-control can be achieved with operant training and without mediation of any muscle activity. The acquired skill allows communication even in total lockedin states.

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Fachgebiet (DDC)
150 Psychologie
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Slow cortical potentials, Brain-computer communication, Amyotrophic lateral sclerosis, EEG
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ISO 690KÜBLER, Andrea, Boris KOTCHOUBEY, Thilo HINTERBERGER, Nimr GHANAYIM, Juri PERELMOUTER, Maggie SCHAUER, Christoph FRITSCH, Edward TAUB, Niels BIRBAUMER, 1999. The thought translation device: a neurophysiological approach to communication in total motor paralysis. In: Experimental brain research. 1999, 124, pp. 223-232. Available under: doi: 10.1007/s002210050617
BibTex
@article{Kubler1999thoug-10380,
  year={1999},
  doi={10.1007/s002210050617},
  title={The thought translation device: a neurophysiological approach to communication in total motor paralysis},
  volume={124},
  journal={Experimental brain research},
  pages={223--232},
  author={Kübler, Andrea and Kotchoubey, Boris and Hinterberger, Thilo and Ghanayim, Nimr and Perelmouter, Juri and Schauer, Maggie and Fritsch, Christoph and Taub, Edward and Birbaumer, Niels}
}
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