Choi, Wonsuk Park, HyungDal Oh, SungHwan Hong, Jeong-Hyun Kim, Junesun Yoon, Dae sung KIM, JIN SEOK 2025-12-30T08:00:15Z 2025-12-30T08:00:15Z 2025-11-27 2025-03-28 https://pubs.kist.re.kr/handle/201004/153931 This study develops and validates a multi-intrafascicular shank array neural interface with fork-shaped spirally for peripheral nerves, optimizing spatial resolution, functional specificity, and charge storage. The 32-channel electrode array features low impedance and a guide for precise neuronal targeting. Over eight weeks, bipolar stimulation in two rats evoked muscle movements in 78.5% and 62.5% of regions post-implantation, with spatial resolution improving to 67.8% and 69.6% by week 8. The device maintained stable impedance and recorded signals, with 31.2% of channels detecting five distinct lower-limb signals in week 4. This neural interface advances neuroanatomical mapping, motor-sensory decoding, and has applications in bionic prosthetics and therapies, enhancing our understanding of peripheral nerve dynamics. Korean 마이크로나노시스템학회 Development of a Fork-Shaped Neural Interface with High Spatial Selectivity for Bidirectional Peripheral Nerve Stimulation and Recording 양방향의 말초 신경 자극 및 기록을 위한 높은 공간 선택성을 가지는 포크 형태의 신경 인터페이스 개발 Conference 2 제27회 한국 MEMS 학술대회 (2025 마이크로나노시스템학회 춘계 학술대회) 제27회 한국 MEMS 학술대회 (2025 마이크로나노시스템학회 춘계 학술대회) KO 제주국제컨벤션센터 (ICC제주) 2025-03-26 제27회 한국 MEMS 학술대회 (2025 마이크로나노시스템학회 춘계 학술대회)