I attempted to subdivide an ROI into 3 segments (in this case the inferior temporal gyrus from the Desikan-Killiany Atlas). In the right hemisphere, this ROI is parcellated into 3 subdivisions however in the left hemisphere, it seems to generate 4 subdivisions for some reason. The first subdivision (red trace on surface rendering) is rather small compared to the remaining 3, which are homologous to the 3 created for the right hemisphere. I hope the attached file helps articulate this better. Curiosuly, I do not see this issue when subdividing the same (or any) ROI from the Desikan-Killiany atlas in any other participants.
Would anyone have any input on this?
Thanks in advance,