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Control of a hand grasp neuroprosthesis using an electroencephalogram-triggered switch : demonstration of improvements in performance using wavepacket analysis
HEASMAN JM; SCOTT TRD; KIRKUP L
MED BIOL ENG COMPUT , 2002, vol. 40, n° 5, p. 588-593 Doc n°: 106753 Localisation : Documentation IRR Descripteurs : AK3 - EEG , DD82 - EXPLORATION EXAMENS BILANS - MAIN-DOIGTS Volitionally modulated electroencephalographic (EEG) waves were monitored for the purpose of controlling a hand neuroprosthesis in people with tetraplegia. The region of the EEG signal spectrum monitored was the occipital alpha wave (8-13 Hz), and volitional modulation was achieved with the opening and closing of the eyes. In a set of 13 trials evaluated, a subject with tetraplegia successfully completed ten trials undertaking stimulated grasp and release using the EEG-triggered switch. EEG signal data recorded during the 13 trials were also post-processed off-line using wavepacket analysis. Following this signal processing, the speed and reliability of the EEG-triggered switch, when operated by the subject with tetraplegia, was significantly improved (p < 0.002). Such improvements provide system performance that is likely to be acceptable to a neuroprosthesis user during activities of daily life. Langue : ANGLAIS Tiré à part : OUI Identifiant basis : 2003224833 |
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