Figure 2. Anatomic location and category of subjective phenomena elicited.

Summary of 30 elicited effects and 142 null effects after electrical stimulation of the orbitofrontal cortex (OFC) bilaterally. Electrodes on the ventral surface are indicated by circles; those at some depth are indicated with diamonds (projected onto the ventral surface). The right hand panel shows a histogram of effect types. Note that all stimulation sites located within the OFC have been translated ventrally to be displayed on the ventral orbitofrontal surface. Sites that appear to lie on the temporal pole are actually situated just superior to temporopolar cortex in the OFC. Note that it was not possible to visualize electrode location data from 4 patients; for details of missing data, see Methods.