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Indian Journal of Clinical Anatomy and Physiology


Study of effect of visual stimuli on heart rate variability in middle aged males


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Research Article

Author Details : Anitha Lakshmi, Sowmya P*

Volume : 6, Issue : 4, Year : 2019

Article Page : 405-407


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Abstract

Introduction: Changes of light intensity can shift many physiological parameters like heart rate variability
(HRV). This study is to assess the effect of visual stimuli on cardiac autonomic activity using Heart Rate
Variability in middle aged males.
Objectives: To determine the effect of visual stimuli on Heart Rate Variability in middle aged males.
Materials and Methods: The effects of visual stimuli on cardiac autonomic activity using Heart Rate
Variability (HRV) was studied in 50 healthy middle aged males. Beat to beat R-R intervals were
continuously recorded under closed eye condition (CEC) and the open eye condition (OEC). HRV
frequency domain parameters like LF nu, HF nu, LF/HF were obtained with the help of RMS polyrite
– D version 3.0.11
Results: The values of LF nu, HF nu and LF/HF for all the subjects under both the closed –eye condition
(CEC) and open- eye condition (OEC) were obtained. Values of LF nu and LF/HF under CEC appear to be
smaller than those OEC. The mean value of HF nu for under CEC was significantly greater (< 0> when compared to OEC.
Conclusion: The parasympathetic component of the cardiac autonomic activity increased during the closed
eye condition when compared to the open eye condition.

Keywords: OEC, CEC, LF/HF, Cardiac activity, AFT.

Doi : 10.18231/j.ijcap.2019.088

How to cite : Lakshmi A, Sowmya P, Study of effect of visual stimuli on heart rate variability in middle aged males. Indian J Clin Anat Physiol 2019;6(4):405-407

Copyright © 2019 by author(s) and Indian J Clin Anat Physiol. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC 4.0) (creativecommons.org)