Phase space in EEG signals of women refferred to meditation clinic
Ateke Goshvarpour, Atefeh Goshvarpour, Saeed Rahati, Vahid Saadatian, Minoo Morvarid
Journal of Biomedical Science and Engineering 2011 DOI: 10.4236/jbise.2011.46060 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational study Peer reviewed |
|---|---|
| Sample size | 16 |
| Population | Healthy women |
| Intervention | Meditation |
| Topics | Meditation |
| Keywords | Poincaré plot Poincaré conjecture Electroencephalography Plot graphics Phase lag Chaotic Poincaré map Recurrence plot Rhythm Phase space Statistics Mathematical analysis Artificial intelligence Acoustics Heart rate variability |
| Citations | 11 |
| Key findings | During meditation, the width of Poincaré plots of EEG signals increased with increasing lag, suggesting the method can detect dynamic changes in brain activity. |
Abstract
Poincare plots are commonly used to study the non-linear behavior of physiological signals. In the time series analysis, the width of Poincare plots can be considered as a criterion of short-term variability in signals. The hypothesis that Poincare plot indexes of electroencephalogram (EEG) signals can detect dy-namic changes during meditation was examined in sixteen healthy women. Therefore, the aim of this study is to evaluate the effect of different lags on the width of the Poincare plots in EEG signals during meditation. Poincare plots with six different lag (1-6) were constructed for two sets of data and the width of the Poincare plot for each lag was calculated. The results show that during meditation the width of Poincare plots tended to increase as the lag increased. The Poincare plot is a quantitative visual tool which can be applied to the analysis of EEG data gathered over relatively short time periods. The simplicity of the width of Poincare plot calculation and its' adap-tation to the chaotic nature of the biological signals could be useful to evaluate EEG signals during me-ditation.
Comparable studies
Other observational and cohort studies on meditation, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Using Self-Report Assessment Methods to Explore Facets of Mindfulness Undergraduate students | 2006 | Observational cohort | |
| Effectiveness of a meditation-based stress reduction program in the treatment of anxiety disorders Patients with generalized anxiety disorder or panic disorder with or without agoraphobia | 1992 | Observational cohort | n = 22 |
| Meditation experience is associated with increased cortical thickness Participants with extensive Insight meditation experience and matched controls | 2005 | Observational cohort | n = 20 |
| Meditation experience is associated with differences in default mode network activity and connectivity Experienced meditators and matched meditation-naive controls | 2011 | Observational cohort | |
| Long-term meditators self-induce high-amplitude gamma synchrony during mental practice Long-term Buddhist practitioners and controls | 2004 | Observational cohort |