Phase relationships between different subdural electrode recordings in man

• Published in: Neuroscience letters Vol. 375; no. 2; pp. 69 - 74
• Main Authors: Brunner, Clemens, Graimann, Bernhard, Huggins, Jane E., Levine, Simon P., Pfurtscheller, Gert
• Format: Journal Article
• Language: English
• Published: Ireland Elsevier Ireland Ltd 28-02-2005
• Subjects: Action Potentials - physiology; Adult; Beta Rhythm; Biological Clocks - physiology; Brain Mapping - instrumentation; Brain Mapping - methods; Brain–computer interface; Cerebral Cortex - anatomy & histology; Cerebral Cortex - physiology; Cortical Synchronization; Electrocorticogram; Electrodes - standards; Electroencephalography - methods; Female; Humans; Male; Phase coupling; Signal Processing, Computer-Assisted - instrumentation; Subdural Space; Synchronization; Time Factors; Phase coupling; Electrocorticogram; Synchronization; Brain–computer interface
• ISSN: 0304-3940; 1872-7972
• DOI: 10.1016/j.neulet.2004.11.052

Almost all brain–computer interfaces (BCIs) ignore information related to the phase coupling between electroencephalogram (EEG) or electrocorticogram (ECoG) recordings from different electrodes. This paper investigates whether additional information can be found when calculating the amount of synchronization between two electrode channels by using a phase locking measurement called the phase locking value (PLV). Special emphasis is put on the beta band (around 20
Hz) as well as the gamma band (high frequencies up to 95
Hz), which can only be used when subdural electrode recordings are available.