Hence  we  can  understand
that  atrophy  of  this  region,
congenital  or  dating  from  early  life,  may  be  unaccompanied  by  any  recog-


Fig.  185,  aspect  of  right  hemisphere,  and  Fig.  186,  probable  area  of
the  lesion,  in  a  case  of  embolism  of  the  right  middle  cerebral  artery
(Sharkey,  Med.-Chir.  Trans.,  i88g,  p.  265).  The  immediate
effect  of  the  lesion  was  left  hemiplegia  and  hemianesthesia,  with
almost  complete  blindness  of  the  left  eye,  and  loss  of  hearing  and
taste  on  the  left  side.  Four  weeks  after  the  illness  there  was
marked  improvement  in  the  special  senses,  and,  a  little  later,  in
the  hemianesthesia.  Six  and  a  half  weeks  after  the  onset  the
special  senses  were  normal,  the  leg  had  regained  much  power,
and  a  fortnight  later  sensation  was  normal.  The  paralysis  of  the
arm  continued  until  death,  seven  years  later.
Fig.  187.
Position  of"  lesion  in  the  left  hemisphere  (angular  gyrus)  which
caused  complete  mind  blindness  during  the  short  time  the
patient  lived.     (Chauffard,  Rev.  de  Med.,  /SS/,p.  940.)


4G4


BRAIN.
Fig


nized  loss  of  sight.*  The  visual  path  will  be  considered  in  connection  with
the  optic  nerves.
