Re: Alpha Synchrony and Alpha coherence

[Guest guest]

Mark,

Synchrony is a special case of coherence.

Coherence means that there is a stable phase relationship between two signals over time. For example, if the peak of one wave always occurs when the peak of the other wave occurs, they are " in phase " ; if the peak of one occurs when the lowpoint of the other occurs, and this is consistent, they are " 180 degrees out of phase " . In either case, if you know what is happening in one wave, you can predict what is happening in the other, because their relationship is consistent over time.

When the two waves are coherent, AND they are IN phase (peaks lined up, valleys lined up), they are synchronous. It probably makes sense to train synchrony in synchronous waveforms (like alpha). Theta and delta don't have the nice sine-wave morphology, so they are less likely to be perfectly synchronous, though they can still be coherent.

I usually train eyes-closed between P3/A1 and P4/A2 (linked references, so both sites are compared against the same value). You can also train between O1 and O2 as your active electrodes, or C3 and C4.

I'm not sure what Les's basis is for the claim that synchrony training resets the ANS, but he usually doesn't make rash statements like that without some good reason.

Pete

Hi

I'd like to understand the difference and why train one rather than the other. Additionally if I were to choose two sites to train which sites would be best to start on.

At the back of my mind I'm thinking about Fehmi's Open Focus and his core thesis that this type of attention training resets Sympathetic and Parasympathetic systems.

Any ideas or experiences welcome.

Mark

-- Van Deusen

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

[Guest guest]

Thanks Pete. I don't think synchrony can currently be trained in the Infinity TLC Suite. Maybe if Francois is around he or someone else can comment. I think Les is saying alpha synchrony training with Open Focus training helps reset SNS and PNS functioning. I take it as the EEG version of HRV training but with profounder effects.

Mark

Re: Alpha Synchrony and Alpha coherence

Mark,

Synchrony is a special case of coherence.

Coherence means that there is a stable phase relationship between two signals over time. For example, if the peak of one wave always occurs when the peak of the other wave occurs, they are "in phase"; if the peak of one occurs when the lowpoint of the other occurs, and this is consistent, they are "180 degrees out of phase". In either case, if you know what is happening in one wave, you can predict what is happening in the other, because their relationship is consistent over time.

When the two waves are coherent, AND they are IN phase (peaks lined up, valleys lined up), they are synchronous. It probably makes sense to train synchrony in synchronous waveforms (like alpha). Theta and delta don't have the nice sine-wave morphology, so they are less likely to be perfectly synchronous, though they can still be coherent.

I usually train eyes-closed between P3/A1 and P4/A2 (linked references, so both sites are compared against the same value). You can also train between O1 and O2 as your active electrodes, or C3 and C4.

I'm not sure what Les's basis is for the claim that synchrony training resets the ANS, but he usually doesn't make rash statements like that without some good reason.

Pete

On 9/6/07, Mark Baddeley <baddeleyhermes (DOT) net.au> wrote:

Hi

I'd like to understand the difference and why train one rather than the other. Additionally if I were to choose two sites to train which sites would be best to start on.

At the back of my mind I'm thinking about Fehmi's Open Focus and his core thesis that this type of attention training resets Sympathetic and Parasympathetic systems.

Any ideas or experiences welcome.

Mark

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

[Guest guest]

Hi Mark,

Your point below saying that synchrony cannot be trained in

the TLC Suite is something I am not sure about. If you look at the

Channel Setup using the Channel Set Editor you can see that the EEG

frequencies are coherent. The next step is just to add a couple of

sync channels using the peak and the trough of each EEG frequency

and you have synchrony.

Bye for now,

-----Mensagem original-----

De: braintrainer em nome de Mark Baddeley

Enviada: sáb 08-09-2007 1:42

Para: braintrainer

Cc:

Assunto: Re: Alpha Synchrony and Alpha coherence

Thanks Pete. I don't think synchrony can currently be trained in the Infinity

TLC Suite. Maybe if Francois is around he or someone else can comment. I think

Les is saying alpha synchrony training with Open Focus training helps reset SNS

and PNS functioning. I take it as the EEG version of HRV training but with

profounder effects.

Mark

Re: Alpha Synchrony and Alpha coherence

Mark,

Synchrony is a special case of coherence.

Coherence means that there is a stable phase relationship between two signals

over time. For example, if the peak of one wave always occurs when the peak of

the other wave occurs, they are " in phase " ; if the peak of one occurs when the

lowpoint of the other occurs, and this is consistent, they are " 180 degrees out

of phase " . In either case, if you know what is happening in one wave, you can

predict what is happening in the other, because their relationship is consistent

over time.

When the two waves are coherent, AND they are IN phase (peaks lined up, valleys

lined up), they are synchronous. It probably makes sense to train synchrony in

synchronous waveforms (like alpha). Theta and delta don't have the nice

sine-wave morphology, so they are less likely to be perfectly synchronous,

though they can still be coherent.

I usually train eyes-closed between P3/A1 and P4/A2 (linked references, so both

sites are compared against the same value). You can also train between O1 and

O2 as your active electrodes, or C3 and C4.

I'm not sure what Les's basis is for the claim that synchrony training resets

the ANS, but he usually doesn't make rash statements like that without some good

reason.

Pete

On 9/6/07, Mark Baddeley <baddeleyhermes (DOT)

net.au> wrote:

Hi

I'd like to understand the difference and why train one rather than the other.

Additionally if I were to choose two sites to train which sites would be best to

start on.

At the back of my mind I'm thinking about Fehmi's Open Focus and his core thesis

that this type of attention training resets Sympathetic and Parasympathetic

systems.

Any ideas or experiences welcome.

Mark

--

Van Deusen

pvdtlcgmail (DOT) com

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

305/433-3160

The Learning Curve, Inc.

[Guest guest]

Hi Mark,

Your point below saying that synchrony cannot be trained in

the TLC Suite is something I am not sure about. If you look at the

Channel Setup using the Channel Set Editor you can see that the EEG

frequencies are coherent. The next step is just to add a couple of

sync channels using the peak and the trough of each EEG frequency

and you have synchrony.

Bye for now,

-----Mensagem original-----

De: braintrainer em nome de Mark Baddeley

Enviada: sáb 08-09-2007 1:42

Para: braintrainer

Cc:

Assunto: Re: Alpha Synchrony and Alpha coherence

Thanks Pete. I don't think synchrony can currently be trained in the Infinity

TLC Suite. Maybe if Francois is around he or someone else can comment. I think

Les is saying alpha synchrony training with Open Focus training helps reset SNS

and PNS functioning. I take it as the EEG version of HRV training but with

profounder effects.

Mark

Re: Alpha Synchrony and Alpha coherence

Mark,

Synchrony is a special case of coherence.

Coherence means that there is a stable phase relationship between two signals

over time. For example, if the peak of one wave always occurs when the peak of

the other wave occurs, they are " in phase " ; if the peak of one occurs when the

lowpoint of the other occurs, and this is consistent, they are " 180 degrees out

of phase " . In either case, if you know what is happening in one wave, you can

predict what is happening in the other, because their relationship is consistent

over time.

When the two waves are coherent, AND they are IN phase (peaks lined up, valleys

lined up), they are synchronous. It probably makes sense to train synchrony in

synchronous waveforms (like alpha). Theta and delta don't have the nice

sine-wave morphology, so they are less likely to be perfectly synchronous,

though they can still be coherent.

I usually train eyes-closed between P3/A1 and P4/A2 (linked references, so both

sites are compared against the same value). You can also train between O1 and

O2 as your active electrodes, or C3 and C4.

I'm not sure what Les's basis is for the claim that synchrony training resets

the ANS, but he usually doesn't make rash statements like that without some good

reason.

Pete

On 9/6/07, Mark Baddeley <baddeleyhermes (DOT)

net.au> wrote:

Hi

I'd like to understand the difference and why train one rather than the other.

Additionally if I were to choose two sites to train which sites would be best to

start on.

At the back of my mind I'm thinking about Fehmi's Open Focus and his core thesis

that this type of attention training resets Sympathetic and Parasympathetic

systems.

Any ideas or experiences welcome.

Mark

--

Van Deusen

pvdtlcgmail (DOT) com

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

305/433-3160

The Learning Curve, Inc.