Evaluation of Fitting Functions for the Saccade Velocity Profile in Electrooculographic Records

Rodolfo García-Bermúdez, Camilo Velázquez-Rodríguez, Fernando Rojas Ruiz, Manuel Rodríguez, Roberto Becerra-García, Michel Velázquez-Mariño, José Arteaga-Vera, Luis Velázquez
June, 2015
Cite DOI

Abstract

A saccade is an ocular movement that is characterized by speed and precision. The velocity profile of this movement is used to extract the maximum speed value, that is one of the most important features of the saccade. A gamma function was used by other authors to describe the waveform shape of the velocity profile. However, this function does not present an optimal profile description in records of patients suffering from Spinocerebellar Ataxia type 2. In order to find a function that better describes the velocity profile, this contribution compares the fittings of several functions through visual and numerical analysis. Results showed a better performance of the partial sums of gaussian series and a gaussian fit function.

Type
Conference Paper
Publication
In the International Work Conference on Artificial Neural Networks, IWANN 2015, Palma de Mallorca, Spain
velocity profile saccade eye movements ataxia SCA2 curve fitting gaussian series nonlinear regression
Camilo Velázquez-Rodríguez
Camilo Velázquez-Rodríguez
Postdoctoral Researcher

My research interests include software engineering, artificial intelligence on code and mining software repositories.