This term is a play on Koanic’s mohawk, the original description of which I couldn’t find. Someone plz link and I’ll edit it in.
I’ve previously noted that associative horizon appears to correlate with absolute cranial width. Particularly, eminent philosophers tend to have wide skulls and are often hyperbrachycephalic.
Aeoli’s bowl cut is the theory that a person’s ventral stream prefers a course through the brain at the latitude where the skull is widest, as viewed from the front. Because that’s hopelessly verbose, I’ll talk through the example of Leibniz.
We would type Leibniz as an starchild-back because his temporal lobes would be disproportionately large in comparison to his overall brain. The maximum width occurs at the eye level on the right side of his skull and just above the eyes on the left side. Aeoli’s bowl cut predicts that, when Leibniz was feeling particularly creative (which he would have very often because width predicts associative horizon) his ventral stream would tend to go through these points of greatest width and shun points where the skull is narrower. So, viewing this skull, it’s not surprising that Leibniz was a philosopher (seeking the pattern which contains all patterns) with music as a side gig.
Restated, I predict a person’s most divergent, idiosyncratic, and creative thinking (in other words, what they spend their free time on) will correlate with the functions of the brain structures the ventral stream prefers to pass through, which correlate with local cranial width.
Using a couple more familiar personalities…Koanic’s skull is widest very near the top, so his creativity tends to be expressed in symbols processing, game theory, and logistics. My own skull is widest where the parietal, temporal, and occipital bones intersect. That is, Wernicke’s area on the left and the equivalent area on the right, with the right side being a bit bigger.