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Authors: Minoru Nakayama 1 ; Wioletta Nowak 2 ; Hitoshi Ishikawa 3 and Ken Asakawa 3

Affiliations: 1 Tokyo Institute of Technology, Japan ; 2 Wroclaw University of Technology, Poland ; 3 Kitasato University, Japan

ISBN: 978-989-674-018-4

Keyword(s): Pupil light reflex, Waveforms, Fourier descriptor, Dissimilarity, Multidimensional scaling.

Related Ontology Subjects/Areas/Topics: Applications and Services ; Artificial Intelligence ; Biomedical Engineering ; Biomedical Signal Processing ; Computer Vision, Visualization and Computer Graphics ; Data Manipulation ; Health Engineering and Technology Applications ; Human-Computer Interaction ; Informatics in Control, Automation and Robotics ; Medical Image Detection, Acquisition, Analysis and Processing ; Methodologies and Methods ; Neurocomputing ; Neurotechnology, Electronics and Informatics ; Pattern Recognition ; Physiological Computing Systems ; Sensor Networks ; Signal Processing, Sensors, Systems Modeling and Control ; Soft Computing ; Time and Frequency Response ; Time-Frequency Analysis

Abstract: The waveforms of Pupillary Light Reflex (PLR) can be analyzed in a diagnostic test that allows for differentiation between disorders affecting photoreceptors and those affecting retinal ganglion cells. This position paper proposes quantitative comparison metrics for waveform shapes using Discrete Fourier Transform (DFT) descriptors (FDs), and another procedure for emphasizing stimuli and subject differences using MultiDimensional Scaling (MDS) and clustering, where dissimilarities between stimuli are defined using descriptors as waveform features. To determine the efficiency of the procedures, a set of PLR data from a conventional experiment for the determination of a melanopsin-associated photoreceptive system was analyzed. Though the captured data was based on single trial for the stimuli, and the number of samples was small, both characteristics of stimuli and subjects were quantitatively extracted using the proposed procedures. Therefore, the possibility of applying the procedures to clinical diagnostics using PLR was examined. (More)

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Paper citation in several formats:
Nakayama M.; Nowak W.; Ishikawa H.; Asakawa K. and (2010). AN ASSESSMENT PROCEDURE INVOLVINGWAVEFORM SHAPES FOR PUPIL LIGHT REFLEX.In Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010) ISBN 978-989-674-018-4, pages 322-326. DOI: 10.5220/0002756603220326

@conference{biosignals10,
author={Minoru Nakayama and Wioletta Nowak and Hitoshi Ishikawa and Ken Asakawa},
title={AN ASSESSMENT PROCEDURE INVOLVINGWAVEFORM SHAPES FOR PUPIL LIGHT REFLEX},
booktitle={Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010)},
year={2010},
pages={322-326},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002756603220326},
isbn={978-989-674-018-4},
}

TY - CONF

JO - Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010)
TI - AN ASSESSMENT PROCEDURE INVOLVINGWAVEFORM SHAPES FOR PUPIL LIGHT REFLEX
SN - 978-989-674-018-4
AU - Nakayama, M.
AU - Nowak, W.
AU - Ishikawa, H.
AU - Asakawa, K.
PY - 2010
SP - 322
EP - 326
DO - 10.5220/0002756603220326

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