A new modeling method for high-voltage, high-power IGBT devices improves the accuracy of turn-off current simulation. By analyzing the carrier storage effect and correcting the analytical expression of di/dt during turn-off, the proposed transient analysis model (TAM) based on a nondual relationship of the switching process achieves much better accuracy than existing dual modeling methods.
In patients with disorders of consciousness, the anesthetic esketamine preserved brain electrical complexity and gamma-band functional connectivity better than propofol during spinal cord stimulator implantation. Esketamine was linked to faster recovery of spontaneous breathing (12 vs. 17 minutes on average) and a lower need for blood pressure support during surgery. At three months, esketamine was associated with significantly improved consciousness outcomes. The findings suggest esketamine may offer neuroprotective benefits in this population.