Deep Brain Stimulation Induces Antidepressant Effects by Restoring High-Fidelity Communication in the BNST-NAc Circuit - PubMed
2 days ago
- #Deep Brain Stimulation
- #Treatment-Resistant Depression
- #Neural Circuits
- Deep Brain Stimulation (DBS) addresses treatment-resistant depression (TRD) by targeting the BNST-NAc circuit.
- The study identifies inhibitory period isolated spikes (IPIS) as a key communication pattern in neural circuits.
- Chronic stress causes BNST neuron hyperactivity, disrupting IPIS and leading to circuit dysfunction.
- DBS restores circuit function by suppressing BNST hyperactivity and re-establishing IPIS-mediated communication.
- Closed-loop DBS, especially when locked to inhibitory periods, effectively treats depression and restores neural synchrony.
- Human TRD patients show LFP biomarkers indicating restored circuit function post-DBS.
- A cross-species algorithm decodes excitatory and inhibitory periods from human LFP signals.
- Therapeutic DBS response correlates with increased inhibitory periods and restored E/I balance.
- A double-blind RCT confirms DBS reduces depressive symptoms, with E/I cycle features being highly informative.