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>>From pi.net!ebernard Tue Jan 9 01:30:36 1996 remote from secyt
>Date:=09Tue, 9 Jan 1996 01:27:28 -0300
>Message-Id: <199601090427.FAA20207 at mailhost.pi.net>
>From:=09ebernard at pi.net>Subject: Re: Human brain wave patterns ( EEG ) and personhood
>To:=09Postmaster at neubio.sld.ar (Administrador del Nodo)
>X-Mailer: AIR Mail 3.X (SPRY, Inc.)
>>>>>Hello, neuronetters!
>>Eveline Bernard <ebernard at pi.net> wrote:
>>> I agree with the Argentinian lady that it can be dangerous
>> to try to connect personhood to EEG brainwave patterns.
>>>> Nevertheless I think it is possible to find significant differences
>> in EEG brainwave patterns between groups of individuals.
>>It seems a good ocassion to correct a seemingly false idea I have.
>So, was Ron Blue right? Can we ascertain on a single EEG if it
>pertains to a man or a woman, a younger or older human (and
>then and provided some further comparations, if it pertains to
>another species)?
>>> Look for litterature on NEUROMETRICS (dr. Roy John, U.S.A.,
>> and dr. de Weerd, Westeinde Ziekenhuis, den Haag, The Nether-
>> lands) and CHAOS THEORY (Research in the Leyenburg Zieken-
>> huis, Den Haag, The Netherlands).
>> The Neurometrics method is based on multivariate analyses, a
>> statistical technique. It finds differences between e.g. man and
>> woman, younger and older people. The Chaos method finds dif-
>> ferences between e.g. more or less demented people.
>> Eveline Bernard =3D Ir. E.D.A.S. Bernard RI
>> Paalhoeveweg 22 3775 KL KOOTWIJK - The Netherlands
>> tel 0577 456543 or 070 3884561
>>I took many EEG on human and non-human brains; specially, I
>participated in marsupial observations to define the EEG appari-
>tion in embryos of the South American opposum in the pouch, and
>of course in adults of sundry mammals and birds. While I can
>usually distinguish among vigilance states, I confess to have never
>performed such sophisticated reshuffling of EEG values. It might
>be an error due to my following prejudice: the EEG data already
>convey cancellations and additions of so multiple sources that
>I presuppose that further noise (added in reduction) will induce
>false patternings. So we don=92t trespass the conventional tools of
>mathematical analysis usual in brain mapping, frequency weight
>and spectral studies. I always bear in mind the physicochemical
>sources of the EEG, rather than emphasizing its clinical practicali-
>ties.
>>In this nisus of justifying me, let me also tell an important episode
>increasing my proneness to minimalize further analyses. Thirty years
>ago (I was not in this world!) a bad thesis attained a doctorate in
>the Faculty of Medicine of the University of Buenos Aires. Physician
>Jorge A. Fernandez Amallo took a Geloso tape recorder and recor-
>ded one EEG channel of our Alvar Reega-XVBureau EEG-machine
>at full rewind speed. Then he played it at normal play speed and so
>believed to had identified the differences between schizo, depressed,
>maniac, paraphrenic and aggressive inpatients in the band of very-high=
-
>frequencies, very-low-amplitude activity. This doctoral thesis without
>info-theory controls was scandalously accepted with maximun honours
>by the Medicine faculty, what later spawned an important discussion
>on noise, confiability and measurement theory (the approval was not
>retired and that doctorate still remains uncontested). This discussio=
n
>spreaded locally an acute mistrust against involved processing, rather
>alike to the one against the proverbial lying with statistics. Howeve=
r
>probably the newly-developed methods Eveline mentions can pick up real
>facts on INDIVIDUAL EEG. Which ones? How much? How reproducibly?
>>So let me inquiry: ASIDE FROM GROUP DIFFERENCES, is it already
>feasible with those new methods to establish with reasonable confidenc=
e
>the sex, age, species or other non-EEG feature of one concrete EEG?
>> Cyberkisses for everybody!
> Mariela
>>
=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D=
*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D*=3D
Prof. Mariela Szirko,
<postmaster at neubio.sld.ar>
Centro de Investig. Neurobiologicas, Ministry of
Health & Welfare, Argentine Republic; and
Lab. of Electroneurobiological Res.,
Hospital "Dr. Jose Tiburcio Borda", Municipality of Buenos Aires,
Office: Phone/Fax (54 1) 306 -7314
e-mail <postmaster at neubio.gov.ar>
Standard disclaimer: Las opiniones de este mensaje son
personales y no comprometen las dependencias a cargo de la firmante
Reply to THIS message, ONLY to: <postmaster at neubio.sld.ar>
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