Optical coherence tomography imaging of evoked neural activity in sciatic nerve of rat

arxiv.org Apr 28 2020 Neurology

Significance: Imaging neural activity in myelinated tissue using optical coherence tomography (OCT) creates exciting possibilities for functional imaging in the peripheral and central nervous systems. Aim: To investigate changes in OCT images in response to evoked neural activity in sciatic nerve of rat in vitro. Approach: M-scans were obtained on peripheral nerves of rat using a swept source polarisation sensitive OCT system, while a nerve cuff acquired electrical neural recordings. From a total of 10 subjects: 3 had no stimulation (controls), 3 had paw stimulation, and 4 had nerve stimulation. Changes in the OCT signal intensity, phase retardation, phase, and ...

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