Multichannel Complexity Index Analysis for Cardiovascular Dynamics associated with a Dream Recall
Mimma Nardelli, Ugo Faraguna, Giulia Grandi, R. Bruno, E. P. Scilingo, Gaetano Valenza
2020 11th Conference of the European Study Group on Cardiovascular Oscillations July 1, 2020 DOI: 10.1109/esgco49734.2020.9158190 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational study Peer reviewed |
|---|---|
| Sample size | 8 |
| Population | Eight volunteers during night sleep |
| Measures | Multichannel Complexity Index (MCI) |
| Topics | Dreaming |
| Key findings | The Multichannel Complexity Index of cardiovascular dynamics was significantly lower during REM sleep epochs followed by dream recall compared with REM epochs without dream recall. The authors suggest this reflects a lower interplay between complex cardiovascular subcomponents during dreaming. |
Abstract
This study reports on a multivariate complexity assessment for cardiovascular dynamics during REM sleep leading to a dream recall. Heart rate variability, as well as systolic and diastolic time interval variability series were gathered from eight volunteers during night sleep, and were considered input of a trivariate Multichannel Complexity Index (MCI) analysis. MCI is a recently proposed index based on a multivariate phase space reconstruction accounting for the intrinsic nonlinearity of the autonomic nervous system dynamics. Results show a significant MCI decrease during REM sleep epochs followed by a dream recall as compared to those associated with no dream recall (p < 10−18). This implies a lower interplay between complex cardiovascular subcomponents during dreaming, complementing current psychophysiological correlates of sleep.
Comparable studies
Other observational and cohort studies on dreaming, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Lucid Dreaming: a State of Consciousness with Features of Both Waking and Non-Lucid Dreaming Student volunteers trained to become lucid and signal lucidity with horizontal eye... | 2009 | Observational study | n = 6 |
| Nightmare Prevalence, Nightmare Distress, and Self-Reported Psychological Disturbance Young adults with a mean age of 20 years | 2002 | Prospective observational study | n = 116 |
| Long-term effects of extreme situational stress on sleep and dreaming Survivors of traumatic events who complained of sleep disturbances, compared with... | 1987 | Case-control study | n = 11 |
| The relationship of nightmare frequency and nightmare distress to well‐being Adults who reported dreams | 2004 | Observational cohort | n = 147 |
| Dreaming in NREM Sleep: A High-Density EEG Study of Slow Waves and Spindles Healthy human subjects | 2018 | Observational cohort | n = 14 |
Citations in the library
Cites 2
- The Complexity of Dreams: a Multiscale Entropy Study on Cardiovascular Variability Series. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference July 1, 2019
- Clinical importance of nightmare disorder in patients with dissociative disorders Psychiatry and Clinical Neurosciences December 1, 2003