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The Journal of Neuroscience, February 1, 2002, ():

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The video shows the rostrocaudal propagation of motoneuron optical signals recorded during rhythmic activity induced by stimulation of a coccygeal ventral root (30mA, 4 Hz). The motoneurons were labeled retrogradely with calcium green dextran and viewed through the ventral white matter. The first three lumbar segments are visible. The video was created by subtracting each frame from a control image (no activity) and then normalizing the images by dividing each difference image by the control image. Only the rhythmic transients are shown. This was accomplished by subtracting the trough in each cycle of the normalized image from the normalized difference images. The video is played at 1/3 real time.

 

 

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