Abstract
Introduction: The different mood states in our daily life can affect our mental and emotional health. The aim of our study was to explore photoplethysmography to record heart rate variability as a marker of changes in mood states in our daily life.Materials and Methods: Two groups of affective pictures categorized into positive and negative sets were shown to thirty subjects on two different consecutive days with simultaneously recording of heart rate variability for 5 minutes by photoplethysmography technique. Immediately after recording on each day, 0-9 self-assessment scale was used to assess the mood state of the subject after viewing the set of pictures.Results: Sympathetic domains of heart rate variability like low frequency (200.3 ±4.1 vs. 166.7 ±2.8, p<0.05), low- and high frequency ratio (1.45 ± 0.21 vs. 0.55 ± 0.07, p<0.05) and low frequency (55.8 ± 2.9 vs. 38.6 ± 2.8, p<0.05) significantly increased in negative mood state condition as compared to positive mood state condition. High frequency (157.9 ± 3.9 vs. 264.3 ± 5.3, p<0.05) and high frequency (44 ± 2.9 vs. 61.2 ±4.2, p< 0.05) significantly increased in positive mood state condition as compared to negative mood state condition. There was significant increase in heart rate (78 ± 2.99 vs. 73 ± 3.11, p<0.05) in negative mood state as compared to positive mood state.Conclusions: Increase in sympathetic activity during negative mood state and increase in parasympathetic activity during positive mood state measured by photoplethysmography technique validates this easy and noninvasive mental assessment tool to determine different mood states.
Highlights
The different mood states in our daily life can affect our mental and emotional health
Increase in sympathetic activity during negative mood state and increase in parasympathetic activity during positive mood state measured by photoplethysmography technique validates this easy and noninvasive mental assessment tool to determine different mood states
If one is aware that the person is not able to function well as one normally does, this is the time to seek help and diagnose about their mood state of our daily life as it can be managed using different interventions like relaxation, cognitive behavioral therapy and mindfulness.[2]
Summary
The different mood states in our daily life can affect our mental and emotional health. Sadness and anxiety can be considered normal which help us to be alert to protect us from unfavorable conditions and act against it It becomes abnormal when these unpleasant feelings become excessive, illogical, continuing, distressing and interfering in our day to day life.[1] If one is aware that the person is not able to function well as one normally does, this is the time to seek help and diagnose about their mood state of our daily life as it can be managed using different interventions like relaxation, cognitive behavioral therapy and mindfulness.[2] it is important to bring into use an easy and reliable mental health assessment tool that assesses the mood states of a person in their daily life. Heart rate variability as a marker of changes in mood state
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