korean english


Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다. 4시 10분부터 2층 라운지세미나실에 다과를 준비하오니 많은 참석 부탁드립니다 아 래 제목: In vivo optical imaging of hemodynamic changes as a surrogate signal of neuronal activity in the neocortex 연사: 서 민 아 교수(성균관대학교 생명과학과) 일시: 2009년 5월 1일(금) 오후4:30 장소: 물리학과 세미나실(31355호실) 초록: Optical imaging offers excellent spatio-temporal sensitivity that is unparalleled by any other perfusion based imaging techniques. We used in vivo optical recording of intrinsic signals (ORIS) to map neurovascular hemodynamics of perfusion, oximetry and membrane potential during epileptic events in rat and mouse neocortex. Studies of hemodynamic changes with ORIS alone were also performed in human. Laboratory studies in rodent epilepsy models have demonstrated a persistent increase in deoxygenated hemoglobin (Hbr) and a decrease in tissue oxygenation during interictal spikes and ictal events. This “epileptic dip”, like the “initial dip” recorded during normal sensory processing, implies that the enormous rise in cerebral blood flow (CBF) is inadequate to meet the increased metabolic demands associated with synchronized epileptic activity. These findings are critically important to the interpretation of the perfusion-based imaging studies, such as fMRI. In addition, we visualized the effect of direct cortical electrical stimulation, an alterative epilepsy treatment. The optical data following direct cortical electrical stimulation showed that hemodynamic signals are sensitive to different electrical stimulation parameters. Furthermore, our recent data demonstrated that the application of unilateral electrical stimulation is able to elicit bilateral hemodynamic responses in rat neocortex. 자료를 다운 받으시려면 아래의 링크을 클릭해주세요. http://physics.skku.ac.kr/ppt/090501.ppt
번호 제목 날짜 조회 수
공지 2022학년도 1학기 콜로퀴움 일정 2022.01.10 27840
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 972996
385 <May 18(Wed.)>Magnetoresistance and Hall effects of Fe5Sn3 single crystals 2022.05.12 240
384 <May 11(Wed.)>Key Nuclear Experimental Studies to Find the Origin of Elements 2022.05.04 375
383 <May 4(Wed.)>Recent progress in the study of topological phases of matter 2022.04.27 500
382 <Apr. 27(Wed.)> I) A few first questions by me. II) ‘Topotactic resistance switching RAM’의 최초 발견 2022.04.20 522
381 <Apr. 20(Wed.)> 반도체 공정용 플라즈마 물리 2022.04.14 598
380 <Apr. 6(Wed.)> Holographic Flat Panel Displays 2022.03.30 884
379 <Mar. 30(Wed.)> Two-dimensional Semiconductors and their applications 2022.03.23 941
378 <Mar. 16(Wed.)> 현세대/차세대 이차전지 기술 동향 및 전망 2022.03.02 949
377 <Mar. 2(Wed.)>Introduction to high-energy nuclear physics 2022.02.24 1010
376 <Mar. 23(Wed.)> Next-generation artificial intelligence devices and physics 2022.03.16 1973
375 <Nov. 17(Wed.)>펜로즈의 삼각형과 블랙홀 - 부분과 전체 2021.11.11 2827
374 <Sep. 15(Wed.)> 강화학습 - 시행착오를 통해 배워나가는 인공지능 2021.09.08 3888
373 <Nov. 10(Wed.)>Optical Spectroscopy of 2-Dimensional Materials 2021.11.03 3914
372 <Oct. 6(Wed.)> 블랙홀에서 쌍꺼풀수술까지 2021.09.29 4688
371 <Nov. 3(Wed.)>시공간의 구조: 상대성이론, 특이점, 우주상수 2021.10.28 7593
370 <April 21(Wed.)> 우주배경복사 편광 관측 - 남극점 기지 바이셉/켁 어레이(BICEP/Keck Array) 망원경 2021.04.12 8196
369 <April 28(Wed.)> 손에 잡히는 AI 2021.04.21 8697
368 <Sep. 8(Wed.)> Utilizing physics to build a trapped-ion quantum computer 2021.09.01 9071
367 <Oct. 27(Wed.)> How interactions shape ecological communities 2021.10.20 13463
366 <Dec.9(Wed.)>한국형 암흑물질 실험 2020.12.02 13585