Interesting read … all sorts of perspective on changes to the human brain in recent years … myopia caused by reading more and more?
http://www.mailgate.org/sci/sci.psychology.journals.psycoloquy/msg00021.html

ABSTRACT: Storfer’s (2000) argument that there was a parallel
increase in myopia, brain size, and intelligence due to
urbanization (complex visual inputs) during the last century is
analyzed in this commentary. Sex differences, sex hormones, and
human handedness also need to be considered. In his excellent
monograph, Storfer (1999) argues that human brains gradually
increased in size during the past century along with a dramatic
upsurge of myopia, which is highly correlated with human
intelligence. Storfer also argues that these adaptive changes
following urbanization may occur by adaptive epigenetic inheritance
without violating the basic concepts of Darwin’s theory.