[bionet.neuroscience] microcephaly, and/or mentally deficient calculators

mlevin@athena.mit.edu (Mike Levin) (04/27/91)

     Does anyone have any info (hopefully references to articles in
scientific journals) on either of the following two phenomena:

1) microcephaly (or is it hydrocephaly?) - the condition where people
   have most of the brain missing, and yet show normal IQ etc.
2) mentally-deficient people (or autistic people) who, without any
   mathematical training, perform various feats (such as produce prime
   numbers, etc.) (I am not interested in normal individuals who
   perform these things for entertainment, with tricks, etc.)

Mike Levin