logo

korean english

게시판

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 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1060555
622 <11/11>Leptogenesis in triplet seesaw models 2006.11.08 137137
621 <5/2>방사선을 이용한 무통/무혈 수술 2008.04.28 136460
620 <April 7(Wed.)> Mid-scale facilities for condensed matter research: high magnetic field and neutron scattering 2021.03.31 135158
619 <9/26> Organic Polymers as Nuclear Radiation Sensors 2012.09.20 133880
618 2016학년도 1학기 콜로퀴움 일정 2016.02.03 133174
617 <12/26> Emergent Physics in 3D Correlated Topological Semimetals file 2013.12.20 132147
616 <4/6> Knowledge is power: Maxwell's demon in the quantum wonderland 2011.03.31 131938
615 <April. 6(Wed.) 4:30 PM> Quantitative Determination of High Tc Superconductivity Mechanism 2016.03.31 130499
614 <11/6> Scaling laws between facility and population densities 2009.11.04 129916
613 <5/30> DNA 나노기술(DNA Nanotechnology) 2008.05.26 129263
612 <Oct. 20(Tue.) 2:00 PM> High-throughput Synthesis of Oxide Thin Films 2015.10.05 128477
611 2021학년도 2학기 콜로퀴움 일정 2021.07.01 128045
610 <5/3> High-Speed MOSFET Technology: State-of-the-Art Strain Engineering 2006.05.02 127259
609 2019학년도 1학기 콜로퀴움 일정 2019.01.08 125731
608 <12/3> Characteristic of risk asset in financial market. 2010.11.29 125239
607 <Oct.16(Wed.)> 솟구치는 초고에너지 입자의 미스테리 2019.10.10 124786
606 <12/21(금)> Theory of topological quantum phase transitions in 3D noncentrosymmetric systems 2012.12.05 124157
605 <3/27>Social Experience, Brain, and Behavior 2009.03.23 123810
604 <11/22>A Glimpse of X-ray Sky 2006.11.16 123611
603 <5/29> Nanomaterials Work at NASA-Johnson Space Center 2009.05.25 123052