Figure 17.
Functional PA images of cerebral hemodynamic changes in response to whisker stimulations. (A) and (B) Cerebral functional PA images in response to left and right whisker stimulation, respectively. The map of increased PA signals (color) was superimposed on the gray-scale structural PA image. (C) Open-skull photograph taken after the PA imaging experiments. B, bregma; L, lambda; M, midline; A, activated regions. (D) Histology of normal lamina IV cortical barrels (region A). (Reprinted with permission from ref 6. Copyright 2003 Nature.)