en
Scientific article
Open access
English

Self-paced movement intention detection from human brain signals: Invasive and non-invasive EEG

Published inConference proceedings, vol. 2012, p. 3280-3283
Publication date2012
Abstract

Neural signatures of humans' movement intention can be exploited by future neuroprosthesis. We propose a method for detecting self-paced upper limb movement intention from brain signals acquired with both invasive and non-invasive methods. In the first study with scalp electroencephalograph (EEG) signals from healthy controls, we report single trial detection of movement intention using movement-related potentials (MRPs) in a frequency range between 0.1 to 1 Hz. Movement intention can be detected above chance level (p<0.05) on average 460 ms before the movement onset with low detection rate during the non-movement intention period. Using intracranial EEG (iEEG) from one epileptic subject, we detect movement intention as early as 1500 ms before movement onset with accuracy above 90% using electrodes implanted in the bilateral supplementary motor area (SMA). The coherent results obtained with non-invasive and invasive method and its generalization capabilities across different days of recording, strengthened the theory that self-paced movement intention can be detected before movement initiation for the advancement in robot-assisted neurorehabilitation.

Keywords
  • Adult
  • Brain/physiology/physiopathology
  • Electroencephalography/methods
  • Epilepsy/physiopathology
  • Evoked Potentials
  • Female
  • Humans
  • Male
  • Movement
  • Reference Values
  • Signal Processing, Computer-Assisted
Citation (ISO format)
LEW, Eileen et al. Self-paced movement intention detection from human brain signals: Invasive and non-invasive EEG. In: Conference proceedings, 2012, vol. 2012, p. 3280–3283. doi: 10.1109/EMBC.2012.6346665
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Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal1557-170X
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