Reminds me of an old case I read in a layman's classic called "Brain Repair"
(layman because non-technical but bloody good read).
A chap fluent in French and German suffered a stroke and lost the ability to
speak German, his natural language. However, he could still speak French.
The only reasons the docs could establish was that at the time the man was
in a deep love affair with a French woman!
"Larry Brash" <lbrash at ozemail.com.au> wrote in message
news:3E86B47A.76F8943E at ozemail.com.au...
> "John H." wrote:
> > 30/03/03 6:13pm
> > An unusual case of sundown syndrome subsequent to a traumatic head
> > Duckett S Brain Inj 1992 Mar-Apr 6:189-91
> > BROWSE: Brain Inj
> > Abstract
> > An unusual case of sundown syndrome is here reported, in which a
> > patient would involuntarily change languages at sunset.
>> More mundanely, I recall a dementing patient of German origin losing his
> ability to speak English one week prior to admission. It never returned,
> of course.
> Larry Brash