[emily77dptcfeng]

Dear Joshi,

I’m writing because I’m having trouble locating the “transverse frontal gyrus” in standard brain atlases. I haven’t been able to find it labelled clearly, and I’m unsure whether it corresponds to part of the superior, middle, or inferior frontal gyrus.

The only reference I’ve found comes from your excellent paper (A Hybrid High-Resolution Anatomical MRI Atlas with Sub-parcellation of Cortical Gyri using Resting fMRI), which states:
“Most large ROIs, such as the cingulate gyrus and the middle frontal gyrus, were subdivided into 2 or 3 regions, while most small ROIs, such as the transverse frontal gyrus and pars opercularis, were subdivided into 2 regions or not divided at all (see Tables 3 & 4 in Appendix).”

If you could point me to which gyrus (superior, middle, or inferior frontal) this region (transverse frontal gyrus) is typically mapped to in your atlas or dataset, I would greatly appreciate it.

Thank you for your time and help.

Best regards,
Emily Feng
December 8, 2025

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