共 46 条
Optical coherence tomography (OCT) reveals depth-resolved dynamics during functional brain activation
被引:56
作者:
Chen, Yu
[1
,2
,3
]
Aguirre, Aaron D.
[1
,2
,4
]
Ruvinskaya, Lana
[5
]
Devor, Anna
[5
,6
,7
]
Boas, David A.
[4
,5
]
Fujimoto, James G.
[1
,2
]
机构:
[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA
[2] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[3] Univ Maryland, Fischell Dept Bioengn, College Pk, MD 20742 USA
[4] MIT, Harvard Mit Div Hlth Sci & Technol, Cambridge, MA 02139 USA
[5] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Martinos Ctr Biomed Imaging,Dept Radiol, Charlestown, MA 02129 USA
[6] Univ Calif San Diego, Dept Neurosci, San Diego, CA 92093 USA
[7] Univ Calif San Diego, Dept Radiol, San Diego, CA 92093 USA
基金:
美国国家卫生研究院;
关键词:
Optical coherence tomography (OCT);
Functional optical coherence tomography;
Optical intrinsic signal imaging (OISI);
Depth-resolved functional dynamics;
Somatosensory cortex;
Scattering change;
Retrograde vessel dilation;
RAT SOMATOSENSORY CORTEX;
NEURONAL-ACTIVITY;
IN-VIVO;
VISUAL-CORTEX;
BLOOD-FLOW;
NEURAL ACTIVITY;
HEMODYNAMIC-CHANGES;
RETINAL PHYSIOLOGY;
SCATTERING CHANGES;
OXYGEN-METABOLISM;
D O I:
10.1016/j.jneumeth.2008.11.026
中图分类号:
Q5 [生物化学];
学科分类号:
071010 ;
081704 ;
摘要:
Optical intrinsic signal imaging (OISI) provides two-dimensional, depth-integrated activation maps of brain activity. Optical coherence tomography (OCT) provides depth-resolved, cross-sectional images of functional brain activation. Co-registered OCT and OISI imaging was performed simultaneously on the rat somatosensory cortex through a thinned skull during forepaw electrical stimulation. Fractional signal change measurements made by OCT revealed a functional signal that correlates well with that of the intrinsic hemodynamic signals and provides depth-resolved, layer-specific dynamics in the functional activation patterns indicating retrograde vessel dilation. OCT is a promising a new technology which provides complementary information to OISI for functional neuroimaging. (C) 2008 Elsevier B.V. All rights reserved.
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页码:162 / 173
页数:12
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