RE: 60 hz - any suggestions

[Guest guest]

Dear Connie, Have you a phone or cell phone in the area? Make sure they are off. Also, you may wish to try covering your electrodes with a small bit of cotton.hope that is helpful.good luck,gillis 60 hz - any suggestions

Hi, just recently I have begun to experience 60 hz interference. If I

move to my basement, the 60 hz goes away. Unfortunately, my room

upstairs is much more convienient for training.

Is there something I can do to eliminate this 60 hz interference. I

have an Atlantis and all 4 lights are green. If I move the lap top

around sometimes I can get rid of it but it is more and more consistant

each day.

Thanks, Connie

[Guest guest]

Dear Connie, Have you a phone or cell phone in the area? Make sure they are off. Also, you may wish to try covering your electrodes with a small bit of cotton.hope that is helpful.good luck,gillis 60 hz - any suggestions

Hi, just recently I have begun to experience 60 hz interference. If I

move to my basement, the 60 hz goes away. Unfortunately, my room

upstairs is much more convienient for training.

Is there something I can do to eliminate this 60 hz interference. I

have an Atlantis and all 4 lights are green. If I move the lap top

around sometimes I can get rid of it but it is more and more consistant

each day.

Thanks, Connie

[Guest guest]

Dear Connie, Have you a phone or cell phone in the area? Make sure they are off. Also, you may wish to try covering your electrodes with a small bit of cotton.hope that is helpful.good luck,gillis 60 hz - any suggestions

Hi, just recently I have begun to experience 60 hz interference. If I

move to my basement, the 60 hz goes away. Unfortunately, my room

upstairs is much more convienient for training.

Is there something I can do to eliminate this 60 hz interference. I

have an Atlantis and all 4 lights are green. If I move the lap top

around sometimes I can get rid of it but it is more and more consistant

each day.

Thanks, Connie

[Guest guest]

Connie,

Of course the first thing to do is to think back and see if you can identify anything that changed in your environment around the time of the change in the 60 Hz interference.

My best guess would be that you have developed an electrode problem. What kind of electrodes are you using? Where did you get them and how old are they? Are there any discolorations on them or nicks in any of the wires? There is a 60 Hz signal all around you anywhere (though it might well be less in the basement), and, if you are getting good impedances, it should be removed by your amplifier. Earlier BrainMasters were very susceptible to noise, but the Atlantis seems to have solved that problem. Good impedances and good noise resistance can both be overcome however by a bad electrode. You might try using new ones, if you have some available, or doing a one-channel hookup and rotating your electrodes through it to see if you can find a combination that reduces the noise. Not only impedance, but also electrode offset can result in bad signals, and the built-in impedance testers don't test for offset.

Another alternative would be to get a gauss meter (there is a nice one called, I think, Gauss Master at www.lessemf.com ) and use that to check your environment. Sometimes you will find a particular area or device which is producing a very large field, and moving it or moving away from it (or sometimes even changing your orientation to it) can often reduce the problem.

Pete

Hi, just recently I have begun to experience 60 hz interference. If I move to my basement, the 60 hz goes away. Unfortunately, my room upstairs is much more convienient for training.Is there something I can do to eliminate this 60 hz interference. I

have an Atlantis and all 4 lights are green. If I move the lap top around sometimes I can get rid of it but it is more and more consistant each day.

..-- Van Deusenpvdtlc@...http://www.brain-trainer.com

305/433-3160The Learning Curve, Inc.

[Guest guest]

Connie,

Of course the first thing to do is to think back and see if you can identify anything that changed in your environment around the time of the change in the 60 Hz interference.

My best guess would be that you have developed an electrode problem. What kind of electrodes are you using? Where did you get them and how old are they? Are there any discolorations on them or nicks in any of the wires? There is a 60 Hz signal all around you anywhere (though it might well be less in the basement), and, if you are getting good impedances, it should be removed by your amplifier. Earlier BrainMasters were very susceptible to noise, but the Atlantis seems to have solved that problem. Good impedances and good noise resistance can both be overcome however by a bad electrode. You might try using new ones, if you have some available, or doing a one-channel hookup and rotating your electrodes through it to see if you can find a combination that reduces the noise. Not only impedance, but also electrode offset can result in bad signals, and the built-in impedance testers don't test for offset.

Another alternative would be to get a gauss meter (there is a nice one called, I think, Gauss Master at www.lessemf.com ) and use that to check your environment. Sometimes you will find a particular area or device which is producing a very large field, and moving it or moving away from it (or sometimes even changing your orientation to it) can often reduce the problem.

Pete

Hi, just recently I have begun to experience 60 hz interference. If I move to my basement, the 60 hz goes away. Unfortunately, my room upstairs is much more convienient for training.Is there something I can do to eliminate this 60 hz interference. I

have an Atlantis and all 4 lights are green. If I move the lap top around sometimes I can get rid of it but it is more and more consistant each day.

..-- Van Deusenpvdtlc@...http://www.brain-trainer.com

305/433-3160The Learning Curve, Inc.

[Guest guest]

Connie,

Of course the first thing to do is to think back and see if you can identify anything that changed in your environment around the time of the change in the 60 Hz interference.

My best guess would be that you have developed an electrode problem. What kind of electrodes are you using? Where did you get them and how old are they? Are there any discolorations on them or nicks in any of the wires? There is a 60 Hz signal all around you anywhere (though it might well be less in the basement), and, if you are getting good impedances, it should be removed by your amplifier. Earlier BrainMasters were very susceptible to noise, but the Atlantis seems to have solved that problem. Good impedances and good noise resistance can both be overcome however by a bad electrode. You might try using new ones, if you have some available, or doing a one-channel hookup and rotating your electrodes through it to see if you can find a combination that reduces the noise. Not only impedance, but also electrode offset can result in bad signals, and the built-in impedance testers don't test for offset.

Another alternative would be to get a gauss meter (there is a nice one called, I think, Gauss Master at www.lessemf.com ) and use that to check your environment. Sometimes you will find a particular area or device which is producing a very large field, and moving it or moving away from it (or sometimes even changing your orientation to it) can often reduce the problem.

Pete

Hi, just recently I have begun to experience 60 hz interference. If I move to my basement, the 60 hz goes away. Unfortunately, my room upstairs is much more convienient for training.Is there something I can do to eliminate this 60 hz interference. I

have an Atlantis and all 4 lights are green. If I move the lap top around sometimes I can get rid of it but it is more and more consistant each day.

..-- Van Deusenpvdtlc@...http://www.brain-trainer.com

305/433-3160The Learning Curve, Inc.

[Guest guest]

It can also help if you use much shorter wires between the electrodes

and the amplification module. Long wires make good antennae. This can

mean devising a way of placing the module close to the person's head. I

attached a holding bracket to the back of the client's chair For reasons

unknown (the new dental office next door?) I recently had an upsurge of

60 Hz artifact. Trying new electrodes made no difference, but shorter

wires solved the problem. I cut pieces out of the middle of my long

wires, soldered the two pieces together and then covered the splice with

some heat shrink tubing. .

Larry

Van Deusen wrote:

> Connie,

>

> Of course the first thing to do is to think back and see if you can

> identify anything that changed in your environment around the time of

> the change in the 60 Hz interference.

>

> My best guess would be that you have developed an electrode problem.

> What kind of electrodes are you using? Where did you get them and how

> old are they? Are there any discolorations on them or nicks in any of

> the wires? There is a 60 Hz signal all around you anywhere (though it

> might well be less in the basement), and, if you are getting good

> impedances, it should be removed by your amplifier. Earlier

> BrainMasters were very susceptible to noise, but the Atlantis seems to

> have solved that problem. Good impedances and good noise resistance

> can both be overcome however by a bad electrode. You might try using

> new ones, if you have some available, or doing a one-channel hookup

> and rotating your electrodes through it to see if you can find a

> combination that reduces the noise. Not only impedance, but also

> electrode offset can result in bad signals, and the built-in impedance

> testers don't test for offset.

>

> Another alternative would be to get a gauss meter (there is a nice one

> called, I think, Gauss Master at www.lessemf.com

> <http://www.lessemf.com/> ) and use that to check your environment.

> Sometimes you will find a particular area or device which is producing

> a very large field, and moving it or moving away from it (or sometimes

> even changing your orientation to it) can often reduce the problem.

>

> Pete

>

> On Sun, May 4, 2008 at 3:41 PM, conniewelsh2

> >

> wrote:

>

> Hi, just recently I have begun to experience 60 hz interference. If I

> move to my basement, the 60 hz goes away. Unfortunately, my room

> upstairs is much more convienient for training.

>

> Is there something I can do to eliminate this 60 hz interference. I

> have an Atlantis and all 4 lights are green. If I move the lap top

> around sometimes I can get rid of it but it is more and more

> consistant

> each day.

>

> .

>

> --

> Van Deusen

> pvdtlc@...

> http://www.brain-trainer.com <http://www.brain-trainer.com>

> 305/433-3160

> The Learning Curve, Inc.

>

[Guest guest]

It can also help if you use much shorter wires between the electrodes

and the amplification module. Long wires make good antennae. This can

mean devising a way of placing the module close to the person's head. I

attached a holding bracket to the back of the client's chair For reasons

unknown (the new dental office next door?) I recently had an upsurge of

60 Hz artifact. Trying new electrodes made no difference, but shorter

wires solved the problem. I cut pieces out of the middle of my long

wires, soldered the two pieces together and then covered the splice with

some heat shrink tubing. .

Larry

Van Deusen wrote:

> Connie,

>

> Of course the first thing to do is to think back and see if you can

> identify anything that changed in your environment around the time of

> the change in the 60 Hz interference.

>

> My best guess would be that you have developed an electrode problem.

> What kind of electrodes are you using? Where did you get them and how

> old are they? Are there any discolorations on them or nicks in any of

> the wires? There is a 60 Hz signal all around you anywhere (though it

> might well be less in the basement), and, if you are getting good

> impedances, it should be removed by your amplifier. Earlier

> BrainMasters were very susceptible to noise, but the Atlantis seems to

> have solved that problem. Good impedances and good noise resistance

> can both be overcome however by a bad electrode. You might try using

> new ones, if you have some available, or doing a one-channel hookup

> and rotating your electrodes through it to see if you can find a

> combination that reduces the noise. Not only impedance, but also

> electrode offset can result in bad signals, and the built-in impedance

> testers don't test for offset.

>

> Another alternative would be to get a gauss meter (there is a nice one

> called, I think, Gauss Master at www.lessemf.com

> <http://www.lessemf.com/> ) and use that to check your environment.

> Sometimes you will find a particular area or device which is producing

> a very large field, and moving it or moving away from it (or sometimes

> even changing your orientation to it) can often reduce the problem.

>

> Pete

>

> On Sun, May 4, 2008 at 3:41 PM, conniewelsh2

> >

> wrote:

>

> Hi, just recently I have begun to experience 60 hz interference. If I

> move to my basement, the 60 hz goes away. Unfortunately, my room

> upstairs is much more convienient for training.

>

> Is there something I can do to eliminate this 60 hz interference. I

> have an Atlantis and all 4 lights are green. If I move the lap top

> around sometimes I can get rid of it but it is more and more

> consistant

> each day.

>

> .

>

> --

> Van Deusen

> pvdtlc@...

> http://www.brain-trainer.com <http://www.brain-trainer.com>

> 305/433-3160

> The Learning Curve, Inc.

>

[Guest guest]

It can also help if you use much shorter wires between the electrodes

and the amplification module. Long wires make good antennae. This can

mean devising a way of placing the module close to the person's head. I

attached a holding bracket to the back of the client's chair For reasons

unknown (the new dental office next door?) I recently had an upsurge of

60 Hz artifact. Trying new electrodes made no difference, but shorter

wires solved the problem. I cut pieces out of the middle of my long

wires, soldered the two pieces together and then covered the splice with

some heat shrink tubing. .

Larry

Van Deusen wrote:

> Connie,

>

> Of course the first thing to do is to think back and see if you can

> identify anything that changed in your environment around the time of

> the change in the 60 Hz interference.

>

> My best guess would be that you have developed an electrode problem.

> What kind of electrodes are you using? Where did you get them and how

> old are they? Are there any discolorations on them or nicks in any of

> the wires? There is a 60 Hz signal all around you anywhere (though it

> might well be less in the basement), and, if you are getting good

> impedances, it should be removed by your amplifier. Earlier

> BrainMasters were very susceptible to noise, but the Atlantis seems to

> have solved that problem. Good impedances and good noise resistance

> can both be overcome however by a bad electrode. You might try using

> new ones, if you have some available, or doing a one-channel hookup

> and rotating your electrodes through it to see if you can find a

> combination that reduces the noise. Not only impedance, but also

> electrode offset can result in bad signals, and the built-in impedance

> testers don't test for offset.

>

> Another alternative would be to get a gauss meter (there is a nice one

> called, I think, Gauss Master at www.lessemf.com

> <http://www.lessemf.com/> ) and use that to check your environment.

> Sometimes you will find a particular area or device which is producing

> a very large field, and moving it or moving away from it (or sometimes

> even changing your orientation to it) can often reduce the problem.

>

> Pete

>

> On Sun, May 4, 2008 at 3:41 PM, conniewelsh2

> >

> wrote:

>

> Hi, just recently I have begun to experience 60 hz interference. If I

> move to my basement, the 60 hz goes away. Unfortunately, my room

> upstairs is much more convienient for training.

>

> Is there something I can do to eliminate this 60 hz interference. I

> have an Atlantis and all 4 lights are green. If I move the lap top

> around sometimes I can get rid of it but it is more and more

> consistant

> each day.

>

> .

>

> --

> Van Deusen

> pvdtlc@...

> http://www.brain-trainer.com <http://www.brain-trainer.com>

> 305/433-3160

> The Learning Curve, Inc.

>

[Guest guest]

I have heard 30 inches or less as the ideal for eliminating the antenna effect.several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software.  Is there a chance that is still there? georgemartin@...www.northstarneurofeedback.com Hi,  just recently I have begun to experience 60 hz interference.  If I move to my basement,  the 60 hz goes away.  Unfortunately,  my room upstairs is much more convienient for training.Is there something I can do to eliminate this 60 hz interference.  I have an Atlantis and all 4 lights are green.  If I move the lap top around sometimes I can get rid of it but it is more and more consistant each day.Thanks, Connie------------------------------------

[Guest guest]

I have heard 30 inches or less as the ideal for eliminating the antenna effect.several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software.  Is there a chance that is still there? georgemartin@...www.northstarneurofeedback.com Hi,  just recently I have begun to experience 60 hz interference.  If I move to my basement,  the 60 hz goes away.  Unfortunately,  my room upstairs is much more convienient for training.Is there something I can do to eliminate this 60 hz interference.  I have an Atlantis and all 4 lights are green.  If I move the lap top around sometimes I can get rid of it but it is more and more consistant each day.Thanks, Connie------------------------------------

[Guest guest]

I have heard 30 inches or less as the ideal for eliminating the antenna effect.several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software.  Is there a chance that is still there? georgemartin@...www.northstarneurofeedback.com Hi,  just recently I have begun to experience 60 hz interference.  If I move to my basement,  the 60 hz goes away.  Unfortunately,  my room upstairs is much more convienient for training.Is there something I can do to eliminate this 60 hz interference.  I have an Atlantis and all 4 lights are green.  If I move the lap top around sometimes I can get rid of it but it is more and more consistant each day.Thanks, Connie------------------------------------

[Guest guest]

I don't know about bioexplorer but the Brainmaster software has a filter notch

at either 50Hz or 60Hz. It works great.

---- wrote:

> I have heard 30 inches or less as the ideal for eliminating the

> antenna effect.

> several years ago Tom Collura was showing off the 6o hz notch filter

> built into the Bmr software. Is there a chance that is still there?

>

>

>

>

>

>

> georgemartin@...

> www.northstarneurofeedback.com

>

>

>

> > Hi, just recently I have begun to experience 60 hz interference.

> > If I

> > move to my basement, the 60 hz goes away. Unfortunately, my room

> > upstairs is much more convienient for training.

> >

> > Is there something I can do to eliminate this 60 hz interference. I

> > have an Atlantis and all 4 lights are green. If I move the lap top

> > around sometimes I can get rid of it but it is more and more

> > consistant

> > each day.

> >

> > Thanks, Connie

> >

> >

> > ------------------------------------

> >

> >

[Guest guest]

I don't know about bioexplorer but the Brainmaster software has a filter notch

at either 50Hz or 60Hz. It works great.

---- wrote:

> I have heard 30 inches or less as the ideal for eliminating the

> antenna effect.

> several years ago Tom Collura was showing off the 6o hz notch filter

> built into the Bmr software. Is there a chance that is still there?

>

>

>

>

>

>

> georgemartin@...

> www.northstarneurofeedback.com

>

>

>

> > Hi, just recently I have begun to experience 60 hz interference.

> > If I

> > move to my basement, the 60 hz goes away. Unfortunately, my room

> > upstairs is much more convienient for training.

> >

> > Is there something I can do to eliminate this 60 hz interference. I

> > have an Atlantis and all 4 lights are green. If I move the lap top

> > around sometimes I can get rid of it but it is more and more

> > consistant

> > each day.

> >

> > Thanks, Connie

> >

> >

> > ------------------------------------

> >

> >

[Guest guest]

I don't know about bioexplorer but the Brainmaster software has a filter notch

at either 50Hz or 60Hz. It works great.

---- wrote:

> I have heard 30 inches or less as the ideal for eliminating the

> antenna effect.

> several years ago Tom Collura was showing off the 6o hz notch filter

> built into the Bmr software. Is there a chance that is still there?

>

>

>

>

>

>

> georgemartin@...

> www.northstarneurofeedback.com

>

>

>

> > Hi, just recently I have begun to experience 60 hz interference.

> > If I

> > move to my basement, the 60 hz goes away. Unfortunately, my room

> > upstairs is much more convienient for training.

> >

> > Is there something I can do to eliminate this 60 hz interference. I

> > have an Atlantis and all 4 lights are green. If I move the lap top

> > around sometimes I can get rid of it but it is more and more

> > consistant

> > each day.

> >

> > Thanks, Connie

> >

> >

> > ------------------------------------

> >

> >

[Guest guest]

The leads I'm using now are 24 " .

By the way re notch filters: When I was recently having my 60 Hz

problems running a BioEx Alpha Coherence up design, for the hell of it

while the person was being trained I connected two low pass filters to

the Source objects and ran them into a separate Coherence object also

set to alpha band to see if this would produce significantly different

Coherence readings. It certainly did, very much higher, in the 80s. .

I haven't had the time to check out this one observation any further but

apparently inserting filters before the Coherence object really messed

things up. I know that running a signal though any kind of filter will

change its phase relationships with other signals but here it apparently

did so to make the two signals much more similar in phase. Anyone know

anything about this?

Larry

nwig@... wrote:

>

> I don't know about bioexplorer but the Brainmaster software has a

> filter notch at either 50Hz or 60Hz. It works great.

>

>

>

> ---- <gmartin@...

> <mailto:gmartin%40usfamily.net>> wrote:

> > I have heard 30 inches or less as the ideal for eliminating the

> > antenna effect.

> > several years ago Tom Collura was showing off the 6o hz notch filter

> > built into the Bmr software. Is there a chance that is still there?

> >

> >

> >

> >

> >

> >

> > georgemartin@...

> <mailto:georgemartin%40northstarneurofeedback.com>

> > www.northstarneurofeedback.com

> >

> >

> >

> > > Hi, just recently I have begun to experience 60 hz interference.

> > > If I

> > > move to my basement, the 60 hz goes away. Unfortunately, my room

> > > upstairs is much more convienient for training.

> > >

> > > Is there something I can do to eliminate this 60 hz interference. I

> > > have an Atlantis and all 4 lights are green. If I move the lap top

> > > around sometimes I can get rid of it but it is more and more

> > > consistant

> > > each day.

> > >

> > > Thanks, Connie

> > >

> > >

> > > ------------------------------------

> > >

> > >

[Guest guest]

The leads I'm using now are 24 " .

By the way re notch filters: When I was recently having my 60 Hz

problems running a BioEx Alpha Coherence up design, for the hell of it

while the person was being trained I connected two low pass filters to

the Source objects and ran them into a separate Coherence object also

set to alpha band to see if this would produce significantly different

Coherence readings. It certainly did, very much higher, in the 80s. .

I haven't had the time to check out this one observation any further but

apparently inserting filters before the Coherence object really messed

things up. I know that running a signal though any kind of filter will

change its phase relationships with other signals but here it apparently

did so to make the two signals much more similar in phase. Anyone know

anything about this?

Larry

nwig@... wrote:

>

> I don't know about bioexplorer but the Brainmaster software has a

> filter notch at either 50Hz or 60Hz. It works great.

>

>

>

> ---- <gmartin@...

> <mailto:gmartin%40usfamily.net>> wrote:

> > I have heard 30 inches or less as the ideal for eliminating the

> > antenna effect.

> > several years ago Tom Collura was showing off the 6o hz notch filter

> > built into the Bmr software. Is there a chance that is still there?

> >

> >

> >

> >

> >

> >

> > georgemartin@...

> <mailto:georgemartin%40northstarneurofeedback.com>

> > www.northstarneurofeedback.com

> >

> >

> >

> > > Hi, just recently I have begun to experience 60 hz interference.

> > > If I

> > > move to my basement, the 60 hz goes away. Unfortunately, my room

> > > upstairs is much more convienient for training.

> > >

> > > Is there something I can do to eliminate this 60 hz interference. I

> > > have an Atlantis and all 4 lights are green. If I move the lap top

> > > around sometimes I can get rid of it but it is more and more

> > > consistant

> > > each day.

> > >

> > > Thanks, Connie

> > >

> > >

> > > ------------------------------------

> > >

> > >

[Guest guest]

The leads I'm using now are 24 " .

By the way re notch filters: When I was recently having my 60 Hz

problems running a BioEx Alpha Coherence up design, for the hell of it

while the person was being trained I connected two low pass filters to

the Source objects and ran them into a separate Coherence object also

set to alpha band to see if this would produce significantly different

Coherence readings. It certainly did, very much higher, in the 80s. .

I haven't had the time to check out this one observation any further but

apparently inserting filters before the Coherence object really messed

things up. I know that running a signal though any kind of filter will

change its phase relationships with other signals but here it apparently

did so to make the two signals much more similar in phase. Anyone know

anything about this?

Larry

nwig@... wrote:

>

> I don't know about bioexplorer but the Brainmaster software has a

> filter notch at either 50Hz or 60Hz. It works great.

>

>

>

> ---- <gmartin@...

> <mailto:gmartin%40usfamily.net>> wrote:

> > I have heard 30 inches or less as the ideal for eliminating the

> > antenna effect.

> > several years ago Tom Collura was showing off the 6o hz notch filter

> > built into the Bmr software. Is there a chance that is still there?

> >

> >

> >

> >

> >

> >

> > georgemartin@...

> <mailto:georgemartin%40northstarneurofeedback.com>

> > www.northstarneurofeedback.com

> >

> >

> >

> > > Hi, just recently I have begun to experience 60 hz interference.

> > > If I

> > > move to my basement, the 60 hz goes away. Unfortunately, my room

> > > upstairs is much more convienient for training.

> > >

> > > Is there something I can do to eliminate this 60 hz interference. I

> > > have an Atlantis and all 4 lights are green. If I move the lap top

> > > around sometimes I can get rid of it but it is more and more

> > > consistant

> > > each day.

> > >

> > > Thanks, Connie

> > >

> > >

> > > ------------------------------------

> > >

> > >

[Guest guest]

BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal. It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies. Getting rid of the 60 Hz signal is much better than covering it up.

Grass makes 18 " electrode wires, which work very nicely with an amplifier set up, as Larry suggests, on the back of the client chair.

Pete

I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software. Is there a chance that is still there?

.. __ -- Van Deusenpvdtlc@...

http://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

[Guest guest]

BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal. It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies. Getting rid of the 60 Hz signal is much better than covering it up.

Grass makes 18 " electrode wires, which work very nicely with an amplifier set up, as Larry suggests, on the back of the client chair.

Pete

I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software. Is there a chance that is still there?

.. __ -- Van Deusenpvdtlc@...

http://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

[Guest guest]

You can also just "choke" your electrodes: wind up the extra in a clip or something. Some people tuck the extra wound up part behind the client's back.

Re: 60 hz - any suggestions

BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal. It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies. Getting rid of the 60 Hz signal is much better than covering it up.

Grass makes 18" electrode wires, which work very nicely with an amplifier set up, as Larry suggests, on the back of the client chair.

Pete

On Sun, May 4, 2008 at 7:22 PM, <gmartinusfamily (DOT) net> wrote:

I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software. Is there a chance that is still there?

.. __ -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

[Guest guest]

You can also just "choke" your electrodes: wind up the extra in a clip or something. Some people tuck the extra wound up part behind the client's back.

Re: 60 hz - any suggestions

BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal. It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies. Getting rid of the 60 Hz signal is much better than covering it up.

Grass makes 18" electrode wires, which work very nicely with an amplifier set up, as Larry suggests, on the back of the client chair.

Pete

On Sun, May 4, 2008 at 7:22 PM, <gmartinusfamily (DOT) net> wrote:

I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software. Is there a chance that is still there?

.. __ -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

[Guest guest]

Pete,Your response makes it sound as though the BMr notch filter just effects the display of raw signal display and not the signal going to band pass filters. Is that actually the case?In BioExplorer I have implemented a notch filter for use in the few cases where I have found it impossible to get rid of the 60 Hz.  I send the filtered info to the band pass filters.  It creates a small delay, much less than a low pass filter would.In response to the post regarding the person (Larry ?) who added a low pass filter to a design while a client was training and saw some big changes in the coherence values it might be partly do to the filter choice in the filter.  The default filter is butterworth which has unequal delay across the filtered band.  It might look different if an FIR filter was used.   georgemartin@...www.northstarneurofeedback.com You can also just "choke" your electrodes: wind up the extra in a clip or something.  Some people tuck the extra wound up part behind the client's back.   Re: 60 hz - any suggestions BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal.  It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies.  Getting rid of the 60 Hz signal is much better than covering it up.   Grass makes 18" electrode wires, which work very  nicely with an amplifier set up, as Larry suggests, on the back of the client chair.   Pete On Sun, May 4, 2008 at 7:22 PM, <gmartinusfamily (DOT) net> wrote: I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software.  Is there a chance that is still there? . __ -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

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Pete,Your response makes it sound as though the BMr notch filter just effects the display of raw signal display and not the signal going to band pass filters. Is that actually the case?In BioExplorer I have implemented a notch filter for use in the few cases where I have found it impossible to get rid of the 60 Hz.  I send the filtered info to the band pass filters.  It creates a small delay, much less than a low pass filter would.In response to the post regarding the person (Larry ?) who added a low pass filter to a design while a client was training and saw some big changes in the coherence values it might be partly do to the filter choice in the filter.  The default filter is butterworth which has unequal delay across the filtered band.  It might look different if an FIR filter was used.   georgemartin@...www.northstarneurofeedback.com You can also just "choke" your electrodes: wind up the extra in a clip or something.  Some people tuck the extra wound up part behind the client's back.   Re: 60 hz - any suggestions BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal.  It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies.  Getting rid of the 60 Hz signal is much better than covering it up.   Grass makes 18" electrode wires, which work very  nicely with an amplifier set up, as Larry suggests, on the back of the client chair.   Pete On Sun, May 4, 2008 at 7:22 PM, <gmartinusfamily (DOT) net> wrote: I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software.  Is there a chance that is still there? . __ -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

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[Guest guest]

Pete,Your response makes it sound as though the BMr notch filter just effects the display of raw signal display and not the signal going to band pass filters. Is that actually the case?In BioExplorer I have implemented a notch filter for use in the few cases where I have found it impossible to get rid of the 60 Hz.  I send the filtered info to the band pass filters.  It creates a small delay, much less than a low pass filter would.In response to the post regarding the person (Larry ?) who added a low pass filter to a design while a client was training and saw some big changes in the coherence values it might be partly do to the filter choice in the filter.  The default filter is butterworth which has unequal delay across the filtered band.  It might look different if an FIR filter was used.   georgemartin@...www.northstarneurofeedback.com You can also just "choke" your electrodes: wind up the extra in a clip or something.  Some people tuck the extra wound up part behind the client's back.   Re: 60 hz - any suggestions BrainMaster software does have a notch filter, but it's worth noting that, while it will remove the signal at 60Hz from the spectrum analyzer, it cannot remove all the effects (e.g. high fastwave coherences) from the training signal.  It also has an effect (at least the last time I tested one) on amplitudes of highbeta frequencies.  Getting rid of the 60 Hz signal is much better than covering it up.   Grass makes 18" electrode wires, which work very  nicely with an amplifier set up, as Larry suggests, on the back of the client chair.   Pete On Sun, May 4, 2008 at 7:22 PM, <gmartinusfamily (DOT) net> wrote: I have heard 30 inches or less as the ideal for eliminating the antenna effect. several years ago Tom Collura was showing off the 6o hz notch filter built into the Bmr software.  Is there a chance that is still there? . __ -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/433-3160The Learning Curve, Inc.

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