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Laser Speckle Contrast Imaging (LSCI) is a wide field of view, non scanning optical technique for observing blood flow. Speckles are produced when coherent light scattered back from biological tissue is diffracted through the limiting aperture of focusing optics. Mobile scatterers cause the speckle pattern to blur; a model can be constructed by inversely relating the degree of blur, termed speckle...
A laser speckle imaging (LSI) technique, with high spatio-temporal resolution, is presented for studying cerebrovascular response to stimulation. LSI is evaluated in a rodent model of cerebrovascular activity, in a model of migraine, by eliciting functional response to brain trigeminal nerve stimulation. The specific haemodynamic response, including deoxy-hemoglobin saturation and blood flow responses...
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