Hello colleagues!
As a terror tale, let me remember that many
years ago a group of neurobiologists here played a sound tape
transcription of a potential recording from acoustical nerve,
taken from a schizo male inmate with pure auditive delirium.
When the ghost woman began to talk in German,
the physicians escaped the lab, horrified.
On more serene hours they found that indeed
no one of them understood German, but the sound modulation per
chance was played at a certain speed that seemed to them what
could have appeared as such a ghost woman, daily encumbering
this patient's mind with her inopportune voices.
On even more serene exploration, they conclu-
ded that what they have recorded were efferences in such a sen-
sory nerve. Centrally modulated, of course, into delirant con-
tents.
I really have no other information on this
kind of episodes, holding the belief that they would be familiar
to practicing neurologists. But regarding this thread, I remem-
bered it, fancying as plausible that birds could implement such
a kind of peripheral control on their own screamings. Prof.
Alicia Avila had here a Paraguayan bird -excuse me, but I have
no idea of its English name; in Spanish is "urraca paraguaya"-,
called "Urri". And "Urri" was heared from this lab, built on
a hill, by persons walking three blocks away, beyond a park and
a busy avenue. Now, "Urri" lives in Gonzalez Catan, a nearby
but more country-styled town, where today I was informed that
attracts persons from even longer distances with her calls. We
oft wondered how she resisted selfdeafening, since a parrot in
a neighboring cage began to show evident signs of urraca-induced
deafness; and conjectured as plausible the above peripheral ex-
planation (for which some circuit should be demonstrated).
Just a comment; cheeries,
Mariela
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Prof. Mariela Szirko
postmaster at neubio.sld..ar
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