Inverse Dynamic Model Of The Pupil Muscle
Plant In The Simulation Of Response To Sound,
Stimuli And Hippus
Author(s)
E. Suaste Gómez & H. Reyes Cruz
Abstract
The model developed by Usui and Hirata was used to simulate the pupil response
to a light stimulus based on autonomic nervous activity, such as sympathetic and
parasympathetic activity. This model was recreated in SIMULINK finding that it
did not consider the limitations of the pupil in frequency which Stark was
reported. The pupil acts as a lowpass filter with a cut-off frequency of 1.5 Hz
approximately. These conditions are generated by the unidirectional rate
sensitivities. Then, considering this fact, the original model by placing the output
of the lowpass filter of -20 dB/decade was modified, which there certain changes
are regarding the response of the model by filtering high frequencies, and a
delay by the filter.
To obtain the pupil dynamic response induced by sound stimulation, the
hippus and flickering of practice mode was using conventional (NTSC) and high
speed videoculography thus, to determine sympathetic and parasympathetic
activity, in order to recreate such behaviour the Hirata-Usui model was used with
a few modification.
Keywords: pupil dynamic, Hirata-Usui’s model, autonomic nervous.
1 Introduction
For several years the eye has been an organ of great interest to study, given that
it can communicate with the environment by getting information of all kinds,
from the fact finding food, to travel without suffering from accidents, getting
away from everything that may affect, to name a few. Hence the importance of
this is to carry out our daily chores.
Keywords
pupil dynamic, Hirata-Usui’s model, autonomic nervous
Related Book
Other papers in this volume
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