Chronic Back Pain Alters Brain Identity Networks

scitechdaily health neuroscience chronic-pain ucsd

摘要

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Scientists at UC San Diego School of Medicine published a study on October 5, 2026, in the British Journal of Anaesthesia revealing that chronic low back pain flares activate the Default Mode Network (DMN), a brain region associated with personal identity and self-reflection. The study involved 114 participants with chronic low back pain who underwent a leg raise test and painful heat stimulation, demonstrating that movement-triggered pain turns on the DMN unlike external acute pain which deactivates it. This fundamental shift explains why conventional symptom-focused treatments like opiates often fail, as chronic pain episodes incorporate psychological elements such as past memories, fear of movement, and anticipation. Innovative therapeutic approaches such as mindfulness meditation and psilocybin are currently being investigated in clinical trials to help patients separate their physical pain from their sense of self.

關鍵點

01

🔹 Study Overview and Publication Date

Published on October 5, 2026, in the British Journal of Anaesthesia by researchers at UC San Diego School of Medicine, investigating how chronic low back pain flares affect brain activity involving 114 participants with chronic low back pain (cLBP).

02

🔸 Brain Network Activation During Pain Flares

During movement-triggered back pain flares, the Default Mode Network (DMN), often called the self-network, becomes active. This contrasts with painful external heat stimulation which deactivates the DMN to shift attention outward.

03

⭐ Connection Between Pain Severity and Identity

Participants with more severe chronic back pain showed stronger functional connections between the DMN and the primary somatosensory cortex, indicating that pain experiences are contaminated by past trauma, embarrassment, and movement expectations.

04

📊 Limitations of Conventional Treatments

Standard pain medicines, including opiates, frequently fail to provide adequate relief because they focus solely on physical symptoms rather than addressing how chronic pain becomes intertwined with a patient's personal identity.

05

💡 Emerging Mind-Body Therapeutic Approaches

Researchers are conducting clinical trials on mindfulness meditation and the psychedelic compound psilocybin to help patients reset their pain systems, change their relationship with pain, and reduce its intrusion into daily life.

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