Procedure for Estimating the Correlation Dimension of Optokinetic Nystagmus Signals

✍ Scribed by T. Aasen; D. Kugiumtzis; S.H.G. Nordahl

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 615 KB
• Volume: 30
• Category: Article
• ISSN: 0010-4809
• DOI: 10.1006/cbmr.1997.1441

✦ Synopsis

In this study, optokinetic nystagmus (OKN) is hypothesized to be controlled by a lowdimensional deterministic and possibly chaotic generator. A procedure for quantifying the presumably low-dimensional structure of the OKN signal, based on the Singular Spectrum Approach and the Grassberger-Procaccia algorithm for estimating the correlation dimension, , is described. The procedure developed showed robustness against noise. Applying this method to OKN signals from 10 healthy subjects and 10 patients suffering from vertigo showed a statistically significant lower mean value for the patients.