Visual evoked potential measurement by maximum length sequence technique.
The maximum length sequence (MLS) technique is applied to improve data collection of a clinically important long latency visual potential. Given a limited time for measuring the response and with low number of stimulus presentation, the MLS technique exceeded the conventional method of ensemble averaging in attaining a higher signal-to-noise ratio (SNR). The theoretical consideration of such improvement is developed along with the system implementation. Typical examples of the results obtained in a human subject are presented.
Lam
F K
FK
Department of Electrical and Electronic Engineering, University of Hong Kong.
Chan
F H
FH
Poon
P W
PW
Du
M H
MH
Xu
B Z
BZ
D000465:Algorithms; D000703:Analog-Digital Conversion; D004569:Electroencephalography; D001330:Electronic Data Processing; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D011930:Reaction Time / Q000502:physiology; D012032:Refractory Period, Electrophysiological / Q000502:physiology; D015203:Reproducibility of Results; D012684:Sensory Thresholds / Q000502:physiology; D012815:Signal Processing, Computer-Assisted