Visual Evoked Potential Measurement by Maximum Length Sequence Technique

Article type: Research Article

Authors: Lam, F. K.^; | Chan, F. H. Y. | Poon, P. W. F. | Du, M. H. | Xu, B. Z.

Affiliations: Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong | Department of Physiology, University of Hong Kong, Hong Kong | The Research Institute of Radio Engineering and Automation, South China University of Technology, Guangzhou, P.R. China

Note: [] Requests for reprints should be addressed to F. K. Lam.

Abstract: 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 teclmique 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.

Keywords: evoked potential (EP), visual evoked potential (VEP), maximum length sequence or M-sequence (MLS)

DOI: 10.3233/BME-1991-1202

Journal: Bio-Medical Materials and Engineering, vol. 1, no. 2, pp. 91-103, 1991