마이크로 LED와 전극을 결합해 뉴런을 세포 단위에서 정밀하게 기록·조절하는 초고밀도 신경 프로브 시스템과 데이터 압축 및 3D 입체화 기술의 발전 과정을 소개하는 이번 강연에 관심있는 분들의 많은 참여를 바랍니다.

강연자: 윤의식 교수 (University of Michigan)

주제: Brain Interface: Electrophysiology and Optogenetic Neuromodulation

일시: 2026년 5월 20일 (수) 16:00 ~ 17:00

장소: 체인지업그라운드 미디어홀

대상: 포스텍 학부생, 대학원생 및 교직원 등 관심 있는 구성원 누구나
강의언어: 영어

참가 등록: 포스터 하단 QR코드 스캔 또는 등록링크 바로가기 https://forms.gle/eVb7sGGtwZZz8Z5u6 
강연 문의: 글로벌 헬스케어 의공학 연구소 (k-bigheart@postech.ac.kr)

[POSTECH K-BIGHEART] International Scholar Lecture

▷Speaker: Euisik Yoon (University of Michigan)

▷Date & Time: May 20th, 16:00 ~ 17:00 
▷Venue: Media Hall, ChangeUp Ground
▷Topic: Brain Interface: Electrophysiology and Optogenetic Neuromodulation
▷Language: English
▷Registration: https://forms.gle/eVb7sGGtwZZz8Z5u6  

▷Abstract
The evolution of Michigan neural probe technologies will be reviewed toward scaling up the number of recording sites and adding selective neural modulation capability to enable optogenetic control of neurons at cellular resolution. Multiple neuro-size micro-LEDs (~10 μm) were monolithically integrated on a probe shank to achieve high spatial temporal modulation of neural circuits. Initial prototype optoelectrodes (MiniSTAR) demonstrated independent control of distinct neuron cells ~50 μm apart in the CA1 pyramidal layer of freely-moving mice at 60 nW light power. The number of optical stimulation sites has scaled up to integrate 128 micro-LEDs along with 256 recording sites (HectoSTAR). Modular system integration and compact 3D packaging approaches will be introduced for realizing high-density neural probe arrays for recording as well as modulating neurons at cellular resolution. Low-power circuit implementation with high area efficiency will be presented for recording of more than 1,000 channels simultaneously. Lossless compression can be achieved from spatial-temporal correlation between the local field potential (LFP) and spike signals. Statistical redundancy is further eliminated through entropy encoding without information loss. Recently, 3D origami architecture has been introduced to deploy the optoelectrodes on non-planar surfaces and enable multi-modalities by incorporating the additional sensors.