Rewiring the Traumatized Brain: Neuromodulation as an Emerging Tool for War-Affected Civilians With PTSD

The psychological damage that war inflicts on civilians is well documented. What remains far less understood is what to do when conventional treatments are unavailable, inaccessible, or simply insufficient for the severity of what civilians are carrying. Trauma-focused psychotherapy and psychosocial support remain the evidence-backed foundation of care in conflict settings, but a growing body of research is examining whether directly altering brain activity through neuromodulation might offer an additional pathway for civilians and veterans living with chronic, treatment-resistant PTSD. The evidence is early, mostly military in origin, and honest about its own limitations. It is also genuinely promising in ways that matter for conflict-affected populations.

Neuromodulation refers to a family of techniques that modify brain activity using magnetic fields, weak electrical currents, light, or real-time feedback systems (Manocchio et al., 2024; Davidson et al., 2024; Koek et al., 2019). The appeal in conflict settings is partly clinical and partly practical. Many of these techniques are non-invasive, relatively brief in application, and do not require the verbal processing of trauma that some survivors find intolerable or impossible in the immediate aftermath of violence. For civilians whose access to specialist care is severely constrained, the prospect of scalable, non-verbal biological interventions is worth examining seriously, even when the evidence base is still developing.

The strongest current support sits with repetitive transcranial magnetic stimulation, known as rTMS. A network meta-analysis of 21 randomized controlled trials involving 981 PTSD patients found that high-frequency rTMS, low-frequency rTMS, and theta-burst stimulation all reduced PTSD symptoms at treatment end compared to sham conditions (Liu et al., 2024; Manocchio et al., 2024; Koek et al., 2019). The mechanism involves targeting the dorsolateral prefrontal cortex, a region involved in emotion regulation and fear extinction that is functionally disrupted in PTSD (Liu et al., 2024; Koek et al., 2019). The honest limitation is that benefits often faded at follow-up, which raises questions about durability that the field has not yet resolved (Liu et al., 2024; Manocchio et al., 2024). rTMS is not a cure. It may, however, be a meaningful adjunct that creates a window of reduced symptom burden during which trauma-focused psychological work becomes more accessible to patients who were previously too dysregulated to engage with it.

Transcranial direct current stimulation, or tDCS, showed large short-term PTSD reductions in the same meta-analysis, with dual-tDCS also associated with anxiety reduction at follow-up, though the evidence base for this technique remains smaller and less robust than for rTMS (Liu et al., 2024; Manocchio et al., 2024). Transcranial photobiomodulation, which uses red and near-infrared LED light applied to the scalp, is further from standard clinical use but produced improvements in attention, memory, and some PTSD symptoms compared to sham conditions in a Gulf War Illness trial after fifteen sessions, with effects maintained at one-month follow-up (Martin et al., 2021). These are preliminary findings from specific populations, and extrapolating them to diverse civilian conflict settings requires caution. They do suggest, however, that the range of non-invasive biological tools available for PTSD treatment is broader than most conflict-focused mental health literature currently acknowledges.

Perhaps the most directly relevant finding for civilian conflict settings comes from Rwanda. A study using low-cost wearable EEG neurofeedback with civilians carrying chronic PTSD in a post-genocide conflict-affected community produced significant reductions in PTSD symptom scores after six to seven sessions, under non-ideal field conditions (Bois et al., 2021). This matters because Rwanda is not a specialized neuroimaging center. The finding suggests that neurofeedback, which trains individuals to consciously regulate their own brain activity by receiving real-time feedback on neural patterns, may be more portable and field-adaptable than the research infrastructure surrounding most neuromodulation work would imply (Bois et al., 2021). A feasibility study in combat veterans using real-time functional MRI neurofeedback targeting the amygdala during trauma recall found that two of three participants showed clinically meaningful symptom improvement alongside normalization of brain connectivity patterns (Gerin et al., 2016). Real-time fMRI neurofeedback is not a realistic tool for resource-limited conflict settings, but the Rwanda EEG study suggests that the underlying principle, teaching the traumatized brain to regulate itself through feedback, may be achievable with considerably more modest technology (Bois et al., 2021).

Invasive approaches including deep brain stimulation, vagus nerve stimulation, and focused ultrasound are being explored for treatment-resistant PTSD, with preliminary evidence of symptom reduction in small samples (Manocchio et al., 2024; Davidson et al., 2024; Koek et al., 2019). Current reviews are appropriately cautious, recommending these only in specialized centers after failure of standard treatments, given the surgical risks and the limited evidence base (Manocchio et al., 2024; Koek et al., 2019). They are not, at present, realistic options for the civilian populations most affected by armed conflict.

What the neuromodulation literature offers, taken together, is not a replacement for trauma-focused psychotherapy and community-based psychosocial support. Those remain the interventions with the broadest evidence and the greatest scalability in conflict settings. What neuromodulation may offer is something different: a biological entry point for civilians whose PTSD severity, treatment resistance, or limited capacity for verbal trauma processing has placed them beyond the reach of conventional care. The Rwanda neurofeedback study, in particular, suggests that the assumption that cutting-edge neuroscience is inherently incompatible with low-resource humanitarian settings deserves to be tested more rigorously (Bois et al., 2021). Research in non-military civilian war populations remains limited, and that gap mirrors the broader failure to center civilian experience that characterizes much of the conflict mental health literature. Closing it matters, both scientifically and clinically.

References

Bois, N., Bigirimana, A., Korik, A., Kéthina, L., Rutembesa, E., Mutabaruka, J., Mutesa, L., Prasad, G., Jansen, S., & Coyle, D. (2021). Neurofeedback with low-cost, wearable electroencephalography (EEG) reduces symptoms in chronic post-traumatic stress disorder. Journal of Affective Disorders, 295, 1319–1334. https://doi.org/10.1016/j.jad.2021.08.071

Davidson, B., Bhattacharya, A., Sarica, C., Darmani, G., Raies, N., Chen, R., & Lozano, A. (2024). Neuromodulation techniques: From non-invasive brain stimulation to deep brain stimulation. Neurotherapeutics, 21. https://doi.org/10.1016/j.neurot.2024.e00330

Gerin, M., Fichtenholtz, H., Roy, A., Walsh, C., Krystal, J., Southwick, S., & Hampson, M. (2016). Real-time fMRI neurofeedback with war veterans with chronic PTSD: A feasibility study. Frontiers in Psychiatry, 7. https://doi.org/10.3389/fpsyt.2016.00111

Koek, R., Roach, J., Athanasiou, N., Van 't Wout-Frank, M., & Philip, N. (2019). Neuromodulatory treatments for post-traumatic stress disorder (PTSD). Progress in Neuro-Psychopharmacology and Biological Psychiatry, 92, 148–160. https://doi.org/10.1016/j.pnpbp.2019.01.004

Liu, H., Wang, X., Gong, T., Xu, S., Zhang, J., Yan, L., Zeng, Y., Yi, M., & Qian, Y. (2024). Neuromodulation treatments for post-traumatic stress disorder: A systematic review and network meta-analysis covering efficacy, acceptability, and follow-up effects. Journal of Anxiety Disorders, 106, 102912. https://doi.org/10.1016/j.janxdis.2024.102912

Manocchio, F., Enepekides, J., Nestor, S., Giacobbe, P., Rabin, J., Burke, M., Lanctôt, K., Goubran, M., Meng, Y., Lipsman, N., Hamani, C., & Davidson, B. (2024). Neuromodulation as a therapeutic approach for post-traumatic stress disorder: the evidence to date. Expert Review of Neurotherapeutics, 25, 101–120. https://doi.org/10.1080/14737175.2024.2442658

Martin, P., Chao, L., Krengel, M., Ho, M., Yee, M., Lew, R., Knight, J., Hamblin, M., & Naeser, M. (2021). Transcranial photobiomodulation to improve cognition in Gulf War Illness. Frontiers in Neurology, 11. https://doi.org/10.3389/fneur.2020.574386