Figure 3
From: Response of SI cortex to ipsilateral, contralateral and bilateral flutter stimulation in the cat
Graphs obtained from OIS data in SI cortical regions evoked by flutter stimulus on the central pad of 2 subjects. Top: Dashed box on OIS images indicates dimensions and orientation of region of interest (ROI) in SI used for analysis. Orientation and scales are identical in both subjects. Stimulus duration was 5 seconds; stimulus onset was at time 0 s. Bottom: Absorbance values within the ROI were averaged and plotted as a function of time for each stimulus condition. In both subjects contralateral stimulation evokes the largest change in absorbance, while ipsilateral stimulation evokes only a weak change in absorbance. Bilateral stimulation evokes an absorbance change that is less than that evoked by a contralateral stimulus.