title: An exploratory study of factors affecting single trial P300 detection.
abstract: A threshold detector for single-trial P300 detection has been evaluated. The detector operates on the 0-4 Hz band, isolated from the raw electroencephalogram using low-pass filtering, wavelet transforms, or the piecewise prony method (PPM). A detection rate around 70% was found, irregardless of stimulus type, interstimulus interval (ISI), probability of occurrence (Pr) of the target stimuli, intrasession and intersession effects, or filtering method. This suggests that P300-based brain-machine interfaces can use an ISI as short as 1 s and a Pr of 45%, to increase throughput.
authors.affiliation: Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204-4005, USA. bjansen@uh.edu
authors.forename: Ben H
authors.initials: BH
authors.lastname: Jansen
authors.forename: Anand
authors.initials: A
authors.lastname: Allam
authors.forename: Prashant
authors.initials: P
authors.lastname: Kota
authors.forename: Kathleen
authors.initials: K
authors.lastname: Lachance
authors.forename: Ayokunle
authors.initials: A
authors.lastname: Osho
authors.forename: Karthik
authors.initials: K
authors.lastname: Sundaresan
mesh_terms: D000328:Adult; D000465:Algorithms; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004569:Electroencephalography / Q000379:methods*; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D010865:Pilot Projects; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity