Estimation of shear and flow rates in pial arterioles during somatosensory stimulation.

@article{Ngai1996EstimationOS,
  title={Estimation of shear and flow rates in pial arterioles during somatosensory stimulation.},
  author={A. C. H. Ngai and H. Richard Winn},
  journal={The American journal of physiology},
  year={1996},
  volume={270 5 Pt 2},
  pages={H1712-7}
}
We tested the hypothesis that a shear stress-dependent mechanism is involved in the dilation of pial arterioles during somatosensory stimulation. In alpha-chloralose-anesthetized rats implanted with cranial windows, we simultaneously measured the diameter and flow velocity of pial arterioles with video and dual-slit methods. Stimulation (0.2-0.3 V, 5 Hz, 0.5 ms pulses for 20 s) of the contralateral sciatic nerve evoked consistent dilator responses in pial arterioles (36 +/- 1 micron diam… CONTINUE READING