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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Mol Neurosci. 2014 Jan 19;53(4):553–561. doi: 10.1007/s12031-013-0221-3

Figure 3. Hemodynamic responses and neuronal activity evoked by sensory stimulation have similar spatial extent across S1.

Figure 3

a. Examples of CBF activation z-map overlaid on the original CBF contrast images show that both forepaw and ChR2 stimulations resulted in extensive hemodynamic responses in the right S1. The tip of the optic fiber used for ChR2 was masked off from the images. b. Examples of BOLD fMRI activation z-map overlaid on the anatomical images. c. An illustration of the position of the nine recording electrodes (red dots) and the optic fiber (blue star) overlaid on a LSCI image of the rat S1. d. Forepaw stimulation resulted in LFP responses that were observed in all nine electrodes that were positioned at lamia IV and covered 2 mm × 2 mm of S1. e. Forepaw stimulation resulted in MUA that were observed in all nine electrodes across S1.