Figure 4.

Two-photon imaging of arteriolar diameter in response to a continuous stimulation one month after SAH. (a) Representative two-photon microscopy images of parenchymal arterioles in sham operated (top panels) and SAH mice (bottom panels) at baseline and after sensory stimulation. (b) Arteriolar dilation in response to continuous stimulation was verified in sham-operated mice, but found to be attenuated in SAH mice. SAH mice showed a trend to dilation relative to baseline. Mean ± SD; 10 to 13 arterioles in 7 to 8 mice per group.