From: Waldemar Neto (wpneto_at_o...)
Date: 2001-05-20 14:47:13
----- Original Message -----
From: "WNeto" <wneto_at_matrix.com.br>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Sunday, May 20, 2001 9:31 AM
Subject: Re: [buildcheapeeg] PC software development methods
> I am working in software using fractal dimension ( through variation of
> dimensional complexity - a generic kind of entropy processing ) and would
> like to participate of the open source code . (see annex at the end of
that
> paper )
> I suggests using right now not final software yet , but instead diagrams
> and pseudocodes and language C .
> Following C one can apply it directly to Windows ( Delphi, or C) and
Linux
> ( C also ) . For more analytical purposes C lang is used in Matlab too ,
> resulting more fast and powerful implementations with many "m-files" in
> every imaginary fields.
>
> I'll put some papers until next thuesday about the brain processing in
> FTP: 200.176.44.33
> USER: anonymous
> Passwrd: your email
>
> Good luck for all ,
>
> Waldemar Neto wpneto_at_o...
>
>
> Subject: Re: [buildcheapeeg] PC software development methods
>
> >
> > > Are there any other programmers here besides me
> > > who are interested in working on the open source
> > > PC software? Well, I hope so, because I'd like to
> > > throw out a few preliminary ideas about how to
> > > organize the project.
> >
> > Your ideas are great. I´d like to add Linux and Windows support as one
of
> my
> > major wants.
> >
> > What would be the best development system to use ?
> > Obviously it would be great if the development system is also freely
> available.
> > Does anybody know if java would be fast enough for this ?
> >
> > Yesterday I heard an exiting lecture about information theory, entropy
of
> > information and fractal dimensions and I´m really looking forward
> implementing
> > some of that stuff :)
> > It´s used by some research groups to predict epileptic seizures. The
> dimension
> > of the EEG signal seems to decrease quite rapidly 1-2 minutes before the
> > epileptic seizure starts. Anybody heard about this method ?
> > As soon as the website is ready, we can try to find some people in
> comp.dsp to
> > help in the software algorithms.
> >
> > Moritz
> >
>
>
> 1) Lancet 2001 Jan 20;357(9251):183-8
> Anticipation of epileptic seizures from standard EEG recordings.
> Le Van Quyen M, Martinerie J, Navarro V, Boon P, D'Have M, Adam C, Renault
> B, Varela F, Baulac M
>
> 2) Epileptic Seizures May Begin Hours in Advance of Clinical Onset
> A Report of Five Patients [Clinical study]
> Brian Litt, Rosana Esteller, Javier Echauz, Maryann D'Alessandro, Rachel
> Shor, Thomas Henry, Page Pennell, Charles Epstein, Roy Bakay, Marc Dichter
> and George Vachtsevanos Neuron, 2001, 30:1:51-64
>
> Manuscript received 1 February 2000 Revised 8 February 2001;
> Abstract
>
> Mechanisms underlying seizure generation are traditionally thought to act
> over seconds to minutes before clinical seizure onset. We analyzed
> continuous 3- to 14-day intracranial EEG recordings from five patients
with
> mesial temporal lobe epilepsy obtained during evaluation for epilepsy
> surgery. We found localized quantitative EEG changes identifying prolonged
> bursts of complex epileptiform discharges that became more prevalent 7 hr
> before seizures and highly localized
> subclinical seizure-like activity that became more frequent 2 hr prior to
> seizure onset. Accumulated energy increased in the 50 min before seizure
> onset, compared to baseline. These observations, from a small number of
> patients, suggest that epileptic seizures may begin as a cascade of
> electrophysiological events that evolve over hours and that quantitative
> measures of preseizure electrical activity could possibly be used to
predict
> seizures far in advance of clinical onset.
>
>
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