“Central sulcus is fully formed in all cases by 28 weeks”
_whew_. so at least that’s a guarantee.
“The central sulcus is a prominent landmark of the brain, separating the parietal lobe from the frontal lobe and the primary motor cortex from the primary somatosensory cortex.”
I may have missed out on:
Secondary cingulate sulci
which develop at 30 weeks.