From: frans smith (f.smith_at_c...)
Date: 2001-06-13 17:21:16
Hello Mr. Peterson,
Thanks for mail.
I understand that brainwaves contain more data.
In the 70's or so they used so called alpha-phones.
In those days they thougth producing alpha waves was it !!!!
Today al lot of rechearch is going on both, in science and in
NFB (some consider NFB/BFB as not regular).
True, each person has is own brainwave-pattern, according to
his/her personal emotional state. Also these waves chanche
with the minute.
So, simulating (human) brainwaves sounds like me and
Cindy Crawford having diner. (you should smile now)..
But your mail gave me an excellent idea, ill tink you agree...
Let someone who has an EEG (brainmaster, hal-4, rs232,
waverider,) with a save function, save some waves, taken
over differend times. Perhaps these files could be used
for an simuator.
Regards Frans
----- Original Message -----
From: peterson_at_d...
To: buildcheapeeg_at_yahoogroups.com
Sent: Wednesday, June 13, 2001 5:31 PM
Subject: [buildcheapeeg] Re: BrainWaveSimulator.
--- In buildcheapeeg_at_yahoogroups.com, "frans smith" <f.smith_at_c...> wrote:
> Hi,
> Simpel question.
> Is the shape of a brainwave important ???
> Can i just use a sinus 14hz, to act as a brainwave at 14hz ?.
> That is, to use the signal to build software ?
> (not raw brainwaves) but just software wich respond when
> a special brainwave frequency is present, not diagnostic.
> thanks
> frans
For our purposes, I think you can use a sine wave to represent the
brain signal. However, as a sort of side-note, some theorists do
think that the shapes of the waveforms are important because they can
indicate the presence of harmonics, which would be indicative of
otherwise concealed higher-frequency patterns. Thus a "saw-toothed"
theta wave might have a different clinical meaning than a square-wave
delta, etc., or at least these theorists say so. I've heard Joel
Lubar and Marvin Sams discussing this issue and disagreeing with each
other. However, I know of no commonly available neurofeedback
equipment that is capable of distinguishing one waveform from another
"on the fly." This is accomplished, at least in the biofeedback
world, by "eyeballing" the raw wave forms. No feedback systems
exist, to my knowledge, which would provide differential feedback
based on wave form characteristics. Once again this motley pack of
brilliant amateurs has found its way onto the front lines of the
field. Hope this is helpful.
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This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:31 BST