Fluorescent angiography during SPG stimulation A, Two representative angiographic images of cortical surface vessels under control conditions (left) and during SPG stimulation (3 mA, 500 µs, right, white bar represents 0.1 mm).
<p>B, Intensity curves (in arbitrary intensity units, iu) for the venous (blue) and arterial (red) compartments for the venous (blue) and arterial (red) compartments (marked in (A)) during control injection (left) and SPG stimulation (right). C, % change in diameter (black) and peak-to-peak (arterial-venous) interval (red) at different stimulation intensities (1–5 mA, 500 µs).</p
