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Optical imaging of the response of vascular dynamics to a cold shock

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Abstract

We have explored the real-time response of the forearm vasculature to a contralateral cold shock. Dual-wavelength measurements were collected at 2 Hz, and the resulting image series (300 images per wavelength) was analyzed using appropriate time-series analysis methods. This confirmed the immediate vasoconstrictive response followed by an ~15-30 sec delay of a decrease in blood oxygenation. Overall, a wealth of time-varying responses were observed throughout the cross-section.

© 2000 Optical Society of America

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