TY - RPRT TI - MR-Guided Focused Ultrasound Neuromodulation of Nucleus Accumbens to Attenuate Oral Fentanyl Motivation in A Self-Administration Rat Model AU - Martin, D. A. AU - Eldirdiri, A. AU - Ernst, T. AU - Cunningham, E. AU - Bernard, S. AU - Kamdi, S. AU - Calu, D. J. AU - Chang, L. PY - 2026 DO - 10.64898/2026.10.17.759605 UR - https://www.biorxiv.org/content/10.64898/2026.10.17.759605v1 ID - 10.64898/2026.10.17.759605 ER -