Key result
High valence picture stimuli significantly altered heart rate variability parameters including HRV triangular index, SDNN, and SD2 compared to low valence stimuli (p<0.05).
Why the study?
Do high valence picture stimuli alter heart rate variability compared to low valence stimuli in male volunteers?
Do high valence picture stimuli alter heart rate variability compared to low valence stimuli in male volunteers?
Picture stimuli with different valence levels elicit significant changes in specific heart rate variability parameters (HRV triangular index, SDNN, and SD2) in male volunteers.
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Emotional valence warrants consideration in HRV protocols; leaves open clinical translation and generalizability.
Low and high valence were induced in 20 male volunteers using two groups of pictures stimuli. Heart response was compared between two groups from RR series extracted from recorded ECG measurements. Mean heart rate and heart rate variability measures including time, frequency and Poincare domain were extracted. The results revealed that HRV triangular index, SDNN and SD2 were the only statistically significant parameters between groups (p<0.05). Mean heart rate and power in LF and HF bands were also different between low and high valence groups however level of significance was not reached‥
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Rezaei et al. (2015) studied Healthy volunteers (n=20). High valence picture stimuli vs. Low valence picture stimuli was evaluated on Heart rate variability measures (p=<0.05). High valence picture stimuli significantly altered heart rate variability parameters including HRV triangular index, SDNN, and SD2 compared to low valence stimuli (p<0.05).
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