International Journal of Physiology
  • Year: 2017
  • Volume: 5
  • Issue: 2

Study of Effect of Visual Stimuli on Heart Rate Varibilityin Young Adult Males

1Associate Professor, Department of Physiology, Subbaiah Institute of Medical Sciences, Shimoga

2Assistant Professor, Department of Physiology, Subbaiah Institute of Medical Sciences, Shimoga

Online published on 18 July, 2017.

Abstract

The effects of visual stimuli on cardiac autonomic activity using Heart Rate Variability (HRV)was studied in 50 healthyadult males. Beat tobeat R-R intervals were cotinuously 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 helpof RMS polyrite-D version 3.0.11. There was a significant (p<0.05) decrease in HF nu in OEC when compared to CEC, and a significant(p<0.05)increase in LF nu and LF-HF ratio in OEC when compared to CEC. Indicating increased sympathetic activity and reduced parasympathetic activity in OEC1.

Keywords

Autonomic activity, Heart Rate Variability, visual stimuli