Polynomial Approximation of Time Series of Pupil Response to Controlled Light Stimuli
José Gerardo Cárdenas Solis, David Asael Gutiérrez Hernández, Edgar Guevara, Raúl Santiago-Montero, María Trinidad Galván González, Sergio López, Rossana Rodríguez Montero, J. M. Carpio · Advances in Computing · 2017
In this paper we present an analysis of data coming from a biological effect in a human body. The pupil reflex, as a reaction of a well-controlled light stimulus, is recorded with a digital camera configured to 30 frames per second. Ones the video is recorded; each frame is analysed, in order to register the diameter evolution with respect to the corresponding time of the taken frame. A vector of diameter changes and a vector of time are obtained. The correspondence between such vectors is plotted to identify the diameter behaviour along time. For this experiment, there were considered 6 individuals and two measurements for each one, one of them before breakfast and the other measurement 30 minutes after breakfast. Results indicate that, by means of computational ways, it is easy to mathematically characteristic a biological time series for a later reproduction for modelling purposes.