| Reference code: | PT/FB/BL-2020-140.03 |
| Location: | BF-GMS
|
Title:
| Electroceutical enhancement of self-compassion training using transcutaneous vagus nerve stimulation: Results from a preregistered fully factorial randomized controlled trial
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| Publication year: | 2025
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URL:
| https://doi.org/10.1017/S0033291725101013
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| Abstract/Results: | ABSTRACT:
Background
Physiological signals conveyed by the vagus nerve may generate quiescent psychological states conducive to contemplative practices. This suggests that vagal neurostimulation could interact with contemplative psychotherapies (e.g. mindfulness and compassion-based interventions) to augment their efficacy.
Methods
In a fully factorial experimental trial, healthy adults (n = 120) were randomized to transcutaneous vagus nerve stimulation (tVNS) plus Self-Compassion-Mental-Imagery Training (SC-MIT) or alternative factorial combinations of stimulation (tVNS or sham) plus mental imagery training (MIT: SC-MIT or Control-MIT). Primary outcomes were self-reported state self-compassion, self-criticism, and heart rate variability (HRV). Exploratory outcomes included state mindfulness and oculomotor attentional bias to compassion-expressing faces. Most outcomes were assessed acutely on session 1 at the pre-stimulation (T1), peri-stimulation (T2), and post-MIT + stimulation (T3) timepoints, and after daily stimulation+MIT sessions (eight sessions).
Results
During session 1, a significant Timepoint × Stimulation × MIT interaction (p = 0.025) was observed, reflecting a larger acute T1?T3 increase in state self-compassion after tVNS+SC-MIT, with similar rapid effects on state mindfulness. Additionally, significant Session × MIT and Session × Stimulation interactions (p = 0.027) on state mindfulness (but not self-compassion) suggested that tVNS+SC-MIT’s effects may accumulate across sessions for some outcomes. By contrast, changes in state self-criticism and compassion-related attentional bias were only moderated by MIT (not stimulation) condition. HRV was unaffected by stimulation or MIT condition.
Conclusion
tVNS augmented the effects of SC-MIT and might, therefore, be a useful strategy for enhancing meditation-based psychotherapies. Our findings also highlight the value of oculomotor attentional metrics as responsive markers of self-compassion training and the continued need for sensitive indices of successful vagal stimulation.
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| Accessibility: | Document exists in file
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Language:
| eng
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Author:
| Kamboj, S. K.
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Secondary author(s):
| Peniket, M., Norman, J., Robshaw, R., Soni-Tricker, A., Falconer, C., Gilbert, P., Simeonov, L.
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Document type:
| Article
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Number of reproductions:
| 3
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Reference:
| Kamboj, S. K., Peniket, M., Norman, J., Robshaw, R., Soni-Tricker, A., Falconer, C., Gilbert, P., & Simeonov, L. (2025). Electroceutical enhancement of self-compassion training using transcutaneous vagus nerve stimulation: Results from a preregistered fully factorial randomized controlled trial. Psychological Medicine, 55, e223, 1–11. https://doi.org/10.1017/S0033291725101013
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| 2-year Impact Factor: | 5.5|2024
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| Impact factor notes: | Impact factor not available yet for 2025
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| Times cited: | 0|2025-09-27
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| Indexed document: | Yes
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| Quartile: | Q1
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| Keywords: | Compassion / Mindfulness / Transcutaneous vagus nerve stimulation / Neurostimulation / Compassion-focused therapy / Attentional bias / Heart rate variability
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Electroceutical enhancement of self-compassion training using transcutaneous vagus nerve stimulation: Results from a preregistered fully factorial randomized controlled trial |