Reaching movement onset- and end-related characteristics of EEG spectral power modulations
Contributors: Mehring, Carsten 1973- Verfasser; Vogt, Klaus 1945-2008 Verfasser; Schulze-Bonhage, Andreas 1960- Verfasser; Aertsen, Ad 1948- Verfasser; Ball, Tonio Verfasser; Albert-Ludwigs-Universität Freiburg Bernstein Center Freiburg; Albert-Ludwigs-Universität Freiburg Fakultät für Biologie; Klinik für Neurochirurgie Abteilung Epileptologie - Epilepsiezentrum; Albert-Ludwigs-Universität Freiburg Medizinische Fakultät; Albert-Ludwigs-Universität Freiburg
Publisher: Universität
Published: 2012
Place of publication: Freiburg
Language: eng
Subjects: Elektroencephalographie; Fitness; Sportunterricht; Fitnesstraining; Sportpädagogik; Präventives Training; Gesundheitssport
Description: Abstract: The spectral power of intracranial field potentials shows movement-related modulations during reaching movements to different target positions that in frequencies up to the high-γ range (approximately 50 to above 200 Hz) can be reliably used for single-trial inference of movement parameters. However, identifying spectral power modulations suitable for single-trial analysis for non-invasive approaches remains a challenge. We recorded non-invasive electroencephalography (EEG) during a self-paced center-out and center-in arm movement task, resulting in eight reaching movement classes (four center-out, four center-in). We found distinct slow (≤5 Hz), μ (7.5–10 Hz), β (12.5–25 Hz), low-γ (approximately 27.5–50 Hz), and high-γ (above 50 Hz) movement onset- and end-related responses. Movement class-specific spectral power modulations were restricted to the β band at approximately 1 s after movement end and could be explained by the sensitivity of this response to different static, post-movement electromyography (EMG) levels. Based on the β band, significant single-trial inference of reaching movement endpoints was possible. The findings of the present study support the idea that single-trial decoding of different reaching movements from non-invasive EEG spectral power modulations is possible, but also suggest that the informative time window is after movement end and that the informative frequency range is restricted to the β band
Notes: Frontiers in Neuroscience. 6 (2012), 65, DOI 10.3389/fnins.2012.00065, issn: 1662-453X

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