Podcast
Questions and Answers
What is VmHRV?
What is VmHRV?
- A measure of cognitive processing capacity
- Calculated using the Lomb-Scargle Periodogram algorithm
- A measure of respiratory parameters
- Calculated from spectral analysis in the high frequency band (correct)
Which parameter is used for assessing longitudinal change on a minute-to-minute basis?
Which parameter is used for assessing longitudinal change on a minute-to-minute basis?
- Task Force
- PRT
- HF-HRV
- RMSSD (correct)
How long does each trial of the Pattern Recognition Task (PRT) last?
How long does each trial of the Pattern Recognition Task (PRT) last?
- 15 s
- 5 s
- 10 s
- 11 s (correct)
How is higher VmHRV related to cardiac health?
How is higher VmHRV related to cardiac health?
What does VmHRV reflect in terms of the autonomic nervous system?
What does VmHRV reflect in terms of the autonomic nervous system?
Which measure was used during the stress phase to elicit a stress response?
Which measure was used during the stress phase to elicit a stress response?
What is the significance of low VmHRV?
What is the significance of low VmHRV?
What is the likely purpose of including the Meaning in Life Questionnaire (MLQP) and the Positive and Negative Affect Schedule (PANAS-P) as predictor variables in the regression analyses?
What is the likely purpose of including the Meaning in Life Questionnaire (MLQP) and the Positive and Negative Affect Schedule (PANAS-P) as predictor variables in the regression analyses?
According to polyvagal theory, what is the link between VmHRV and social health?
According to polyvagal theory, what is the link between VmHRV and social health?
What does VmHRV adjustment for respiratory parameters involve?
What does VmHRV adjustment for respiratory parameters involve?
How does VmHRV affect cognitive processing capacity?
How does VmHRV affect cognitive processing capacity?
What is the relationship between RMSSD and HF-HRV?
What is the relationship between RMSSD and HF-HRV?
Which component was included in the regression analysis involving ln(RMSSD) * 100 and meaning in life?
Which component was included in the regression analysis involving ln(RMSSD) * 100 and meaning in life?
What does VmHRV adjustment for respiratory parameters involve?
What does VmHRV adjustment for respiratory parameters involve?
Which model suggests that VmHRV is associated with self-regulation of the central autonomic network?
Which model suggests that VmHRV is associated with self-regulation of the central autonomic network?
How is VmHRV recovery in individuals with higher MIL affected in an 'active' MM condition compared to a 'control' MM condition?
How is VmHRV recovery in individuals with higher MIL affected in an 'active' MM condition compared to a 'control' MM condition?
What is the relationship between VmHRV and executive functioning based on the information provided?
What is the relationship between VmHRV and executive functioning based on the information provided?
Which neural regions are involved in the functional connectivity reflected by VmHRV according to the text?
Which neural regions are involved in the functional connectivity reflected by VmHRV according to the text?
How does the CAN output impact VmHRV according to the text?
How does the CAN output impact VmHRV according to the text?
What is the neural origin of respiration and VmHRV relationship?
What is the neural origin of respiration and VmHRV relationship?
What is the primary purpose of the component-plus-residual plots mentioned in the text?
What is the primary purpose of the component-plus-residual plots mentioned in the text?
What is the primary purpose of adjusting for respiratory parameters when analyzing VmHRV?
What is the primary purpose of adjusting for respiratory parameters when analyzing VmHRV?
Which of the following best describes the relationship between respiration and VmHRV?
Which of the following best describes the relationship between respiration and VmHRV?
What is the main purpose of the Pattern Recognition Task (PRT) in the study?
What is the main purpose of the Pattern Recognition Task (PRT) in the study?
Based on the information provided, what is the likely goal of the study described in the text?
Based on the information provided, what is the likely goal of the study described in the text?
Which of the following variables is likely to be the outcome variable in the regression analyses presented in Tables 2 and 3?
Which of the following variables is likely to be the outcome variable in the regression analyses presented in Tables 2 and 3?
How does meaning in life (MIL) relate to stress-regulation and the Pattern Recognition Task (PRT)?
How does meaning in life (MIL) relate to stress-regulation and the Pattern Recognition Task (PRT)?
What is the neural origin of the relationship between respiration and VmHRV?
What is the neural origin of the relationship between respiration and VmHRV?
How does cognitive processing capacity relate to the analysis of VmHRV and respiration?
How does cognitive processing capacity relate to the analysis of VmHRV and respiration?
Based on the information provided, what is the likely purpose of including respiration as a predictor variable in the regression analyses?
Based on the information provided, what is the likely purpose of including respiration as a predictor variable in the regression analyses?
Why is there an ongoing debate about whether VmHRV should be adjusted for respiratory parameters?
Why is there an ongoing debate about whether VmHRV should be adjusted for respiratory parameters?
What was the information provided to participants regarding task performance before starting the Pattern Recognition Task (PRT)?
What was the information provided to participants regarding task performance before starting the Pattern Recognition Task (PRT)?
What is one argument presented against adjusting VmHRV for respiratory parameters?
What is one argument presented against adjusting VmHRV for respiratory parameters?
What was the action expected from the participants upon presentation of the 5th character in the Pattern Recognition Task (PRT)?
What was the action expected from the participants upon presentation of the 5th character in the Pattern Recognition Task (PRT)?
What type of feedback was displayed on the screen immediately after participants responded in the Pattern Recognition Task (PRT)?
What type of feedback was displayed on the screen immediately after participants responded in the Pattern Recognition Task (PRT)?
Why do some researchers argue that VmHRV should not be adjusted for respiratory parameters?
Why do some researchers argue that VmHRV should not be adjusted for respiratory parameters?
What was displayed on the screen along with 'Right Answer' or 'Wrong Answer' in the Pattern Recognition Task (PRT)?
What was displayed on the screen along with 'Right Answer' or 'Wrong Answer' in the Pattern Recognition Task (PRT)?
What did the regression analysis reveal regarding the relationship between Meaning in Life (MIL) and vagally-mediated heart rate variability (VmHRV) at baseline?
What did the regression analysis reveal regarding the relationship between Meaning in Life (MIL) and vagally-mediated heart rate variability (VmHRV) at baseline?
Under what conditions was the MIL linked to greater stress-reactivity according to the study?
Under what conditions was the MIL linked to greater stress-reactivity according to the study?
What physiological process was specifically examined in relation to higher Meaning in Life (MIL) in the study?
What physiological process was specifically examined in relation to higher Meaning in Life (MIL) in the study?
In what conditions were phasic changes in vagally-mediated heart rate variability (VmHRV) analyzed as a function of Meaning in Life (MIL)?
In what conditions were phasic changes in vagally-mediated heart rate variability (VmHRV) analyzed as a function of Meaning in Life (MIL)?
What did the mixed models indicate about the relationship between higher Meaning in Life (MIL) and stress attenuation?
What did the mixed models indicate about the relationship between higher Meaning in Life (MIL) and stress attenuation?
Study Notes
Study Design and Participants
- The study was approved by the Human Participants Review Committee at York University
- Sample size estimation: N = 52 for medium to large effect size with a power of 0.80
- Assuming 20% drop-out rate, N = 65 was the target sample size
- Participants were recruited from an undergraduate research pool, aged 17-27 years old
Meaning in Life (MIL) and Stress Regulation
- MIL buffers adverse life stress and improves self-regulation
- Higher MIL leads to better attitudes towards stressors, making them less random and more comprehensible
- Enhanced MIL experience reduces stress-reactivity by providing a framework for prioritizing daily stressors
- MIL and social connectedness likely interact in cycles where close relationships elevate MIL and elevated MIL promotes social bonding
Heart Rate Variability (HRV) and Health
- HRV measures functional balance in the autonomic nervous system (ANS)
- Vagally-mediated heart rate variability (VmHRV) reflects variability in inter-beat intervals and provides a measure of parasympathetic activation
- Higher VmHRV indicates cardiac health, reflecting adaptive and efficient ANS responses to external stimuli
- Low VmHRV signals autonomic inflexibility and dysregulation linked to impaired stress reactivity, distress, and disease risk
Methodology
- VmHRV was acquired using a 3-lead electrocardiogram (ECG) configuration
- ECG signals were digitized at a sampling rate of 1000 Hz using a PowerLab 4/35 acquisition system
- Digitized signals were recorded and analyzed using LabChart 8 software
- Prior to analysis, all ECG recordings were visually inspected for artifacts, arrhythmias, and ectopic beats, and manually adjusted if necessary
Measures
- VmHRV was calculated from spectral analysis in the high frequency band (0.15–0.40 Hz [HF-HRV]) using the Lomb-Scargle Periodogram algorithm
- RMSSD (root mean square of successive differences between normal heartbeats) was used as a measure of VmHRV
- Meaning in Life Questionnaire - Presence of meaning subscale (MLQ-P) was used to assess MIL
- Positive and Negative Affect Schedule – Positive affect (PANAS-P) and Center for Epidemiologic Studies Depression Scale (CES-D) were used to assess psychological variables
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Description
Explore an overview of VmHRV measures RMSSD and HF-HRV in the context of psychophysiology research. Learn about their strong correlation and significance as preferred measures of VmHRV. Dive into the cross-sectional analyses based on 5-min measurements of RMSSD and HF-HRV.
