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5 March 2014 Activity-dependent signal changes in neurons by fiber-coupled microscopy
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To study neuronal functions in brain, we developed a higher resolution type fiber-coupled microscope (FCM), and measured the activity-dependent fluorescence intensity of the excitable cells over time. FCM was constructed by combining a fluorescence microscope with the high density type of fiber bundle, which consisted of 1.5 x 104 unit fiber in the assemble less than 0.5 mm tip. The spatial resolution was calculated to be 2.4 mm with the 5 mm focal depth. The activity-dependent Ca signals were detectable in each cell of either the pancreatic spheroids or the brain slices. The present FCM is very promising for detailed studies with the live imaging of signal molecules in the body at a single cell level.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takashi Sakurai and Kowa Koida "Activity-dependent signal changes in neurons by fiber-coupled microscopy", Proc. SPIE 8928, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics, 89280V (5 March 2014);

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