The neural correlates of mindful awareness: a possible buffering effect on anxiety-related reduction in subgenual anterior cingulate cortex activity.
Yuko Hakamata, Mikio Iwase, Takashi Kato, Kohei Senda, Toshiya Inada
PLoS One 2013 DOI: 10.1371/journal.pone.0075526 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Cross-sectional observational study Peer reviewed |
|---|---|
| Sample size | 140 |
| Population | Healthy adults |
| Measures | Temperament and Character Inventory, [18F] fluorodeoxyglucose positron emission tomography |
| Topics | Anxiety |
| Key findings | Harm avoidance was associated with lower sgACC/vmPFC glucose metabolism, while self-transcendence was associated with higher metabolism in the same region. Individuals high in both harm avoidance and self-transcendence maintained metabolism comparable to those low in both. The authors propose that this region may support mindful awareness and emotional regulation. |
Abstract
Human personality consists of two fundamental elements character and temperament. Character allays automatic and preconceptual emotional responses determined by temperament. However, the neurobiological basis of character and its interplay with temperament remain elusive. Here, we examined character-temperament interplay and explored the neural basis of character, with a particular focus on the subgenual anterior cingulate cortex extending to a ventromedial portion of the prefrontal cortex (sgACC/vmPFC). Resting brain glucose metabolism (GM) was measured using [(18)F] fluorodeoxyglucose positron emission tomography in 140 healthy adults. Personality traits were assessed using the Temperament and Character Inventory. Regions of interest (ROI) analysis and whole-brain analysis were performed to examine a combination effect of temperament and character on the sgACC/vmPFC and to explore the neural correlates of character, respectively. Harm avoidance (HA), a temperament trait (i.e., depressive, anxious, vulnerable), showed a significant negative impact on the sgACC/vmPFC GM, whereas self-transcendence (ST), a character trait (i.e., intuitive, judicious, spiritual), exhibited a significant positive effect on GM in the same region (HA β = -0.248, p = 0.003; ST: β = 0.250, p = 0.003). In addition, when coupled with strong ST, individuals with strong HA maintained the sgACC/vmPFC GM level comparable to the level of those with low scores on both HA and ST. Furthermore, exploratory whole-brain analysis revealed a significant positive relationship between ST and sgACC/vmPFC GM (peak voxel at x = -8, y = 32, z = -8, k = 423, Z = 4.41, corrected p (FDR) = 0.030). The current findings indicate that the sgACC/vmPFC might play a critical role in mindful awareness to something beyond as well as in emotional regulation. Developing a sense of mindfulness may temper exaggerated emotional responses in individuals with a risk for or having anxiety and depressive disorders.
Comparable studies
Other cross-sectional and survey studies on anxiety, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Psychological flexibility mediates the relations between acute psychedelic effects and subjective decreases in depression and anxiety. International sample of people who reported having used a psychedelic | 2020 | Cross-sectional survey | n = 985 |
| The Challenging Experience Questionnaire: Characterization of challenging experiences with psilocybin mushrooms Internet survey respondents reporting challenging experiences with psilocybin | 2016 | Questionnaire development and validation | |
| Psychedelics and Mental Health: A Population Study Adult population in the United States | 2013 | Cross-sectional survey | n = 130,152 |
| Ecstasy/MDMA attributed problems reported by novice, moderate and heavy recreational users Ecstasy users who participated in a WWW study of recreational drug use | 2002 | Cross-sectional survey | n = 282 |
| 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) used in a naturalistic group setting is associated with unintended improvements in depression and anxiety. Adults who used 5-MeO-DMT in a group setting with structured procedures | 2019 | Cross-sectional survey | n = 362 |
Citations in the library
Cited by 4
- Neurobiological Changes Induced by Mindfulness and Meditation: A Systematic Review. Biomedicines November 15, 2024
- Enhanced Resting-State Functional Connectivity With Decreased Amplitude of Low-Frequency Fluctuations of the Salience Network in Mindfulness Novices Frontiers in Human Neuroscience March 3, 2022
- A Review on Research and Evaluation Methods for Investigating Self-Transcendence. Frontiers in Psychology 2020
- Ventral-subgenual anterior cingulate cortex and self-transcendence Frontiers in Psychology December 27, 2013