Figure 4: In the lower right is a computer average of a CeA-PAG evoked potential illustrating how peak height (PH) was measured by computer.
Plotted in the graphs are means SEM of PH of CeA-PAG evoked potentials
expressed as a ratio of threshold PH versus intensity of stimulation in
μC/pulse (calculated as intensity in μA times pulse width in microsecond to take pulse
width into the intensity measure). Means are plotted separately by group and
within a group separately by hemisphere.