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Authors: Eri Shibayama and Taira Suzuki

Affiliation: Graduate School of Psychology, J.F. Oberin University, Machida, Tokyo 194-0294, Japan

Keyword(s): Chaos, Largest Lyapunov Exponent (LLE), Autobiographical Memory.

Abstract: The effects of autobiographical memory retrieval on a psychophysiological index were examined. The experimental (retrieval) group conducted an autobiographical memory retrieval task, whereas the control group repeatedly vocalized Japanese syllabary. The largest fingertip pulse-wave Lyapunov Exponent (LLE) in chaos analysis, which is a nonlinear analysis, was measured as an objective psychophysiological index. Moreover, participants responded to a psychological questionnaire and completed an original checklist before and after the experiment. The results indicated that fingertip pulse-wave LLE increased significantly only in the retrieval group. This result supported previous findings that psychotherapies such as reminiscence therapy have positive effects on cognitive functions at the psychophysiological level. Moreover, only the retrieval group showed significant improvements in psychological indices. Therefore, recalling autobiographical memories and verbally sharing it with others might contribute to maintaining mental health. To date, autobiographical memory retrieval and reminiscence therapy have not been sufficiently examined by using physiological indices. This study’s results using a physiological index are expected to contribute to research on reminiscence therapy. (More)

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Paper citation in several formats:
Shibayama, E. and Suzuki, T. (2021). Chaotic Changes in Fingertip Pulse Waves during Autobiographical Memory Retrieval. In Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - BIOSIGNALS; ISBN 978-989-758-490-9; ISSN 2184-4305, SciTePress, pages 35-41. DOI: 10.5220/0010228500002865

@conference{biosignals21,
author={Eri Shibayama. and Taira Suzuki.},
title={Chaotic Changes in Fingertip Pulse Waves during Autobiographical Memory Retrieval},
booktitle={Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - BIOSIGNALS},
year={2021},
pages={35-41},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010228500002865},
isbn={978-989-758-490-9},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - BIOSIGNALS
TI - Chaotic Changes in Fingertip Pulse Waves during Autobiographical Memory Retrieval
SN - 978-989-758-490-9
IS - 2184-4305
AU - Shibayama, E.
AU - Suzuki, T.
PY - 2021
SP - 35
EP - 41
DO - 10.5220/0010228500002865
PB - SciTePress

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