In article <1994Jan31.232854.2978 at news.yale.edu>,
Yukiharu Hadeishi <YHADEISH at biomed.med.yale.edu> wrote:
>A friend of mine asked me if I knew anything about "an Englishman who had an
>above average IQ and no brain." I told him he might have been thinking about
....>head was almost entirely filled with CSF. His ventricles had compressed
his >cortex into a 1 mm thick layer, according to the prof.
>....>anybody save the post? And did it have citations? Any help would bek
Someone posted a reference to this from Science. It was either 12-12
-1980 or 12-12-90. I believe it was 1980 but I entered it incorrectly to
my pocket casio! Any way, I have seen a few cases of hydrocephalus with
thin cortical mantles. Most of them function very poorly, but a few get
along o.k.. Any genius with a one mm cortical mantle is truly
exceptional. Rekate published an algorithm for ventricular shunting of
patients with hydrocephalus who had cortical mantles less than 3.5 cm in
Clinical Neurosurgery 32:605, 1985. This was based on some 1973 data from
Young et. al. (sorry, have no more details at this time) that demonstrated
those with cortical mantle less than 2 cm usually developed with I.Q.'s <
80 while those with normal I.Q.'s normally had cortical mantles > 2.8 cm.
Any other opinions out there?
David McKalip
Division of Neurosurgery
UNC-Chapel Hill
