Comments for qEEGsupport.com http://qeegsupport.com Quantitative Electroencephalography (qEEG): Information & Discussion Tue, 23 Feb 2010 00:58:29 -0500 http://wordpress.org/?v=2.8.4 hourly 1 Comment on AAPB 41st Annual Meeting : Personalized Medicine in the Age of Technology: Psychophysiology & Health by esp http://qeegsupport.com/aapb-41st-annual-meeting-personalized-medicine-in-the-age-of-technology-psychophysiology-health/comment-page-1/#comment-46 esp Tue, 23 Feb 2010 00:58:29 +0000 http://qeegsupport.com/?p=520#comment-46 This should be an excellent meeting. I am looking forward to it. This should be an excellent meeting. I am looking forward to it.

]]> Comment on Three Sets of Data from the Same EEG by Jay Gunkelman http://qeegsupport.com/three-sets-of-data-from-the-same-eeg/comment-page-1/#comment-45 Jay Gunkelman Mon, 01 Feb 2010 23:15:32 +0000 http://qeegsupport.com/?p=522#comment-45 You can see that the commonly stated though incorrectly held opinion that weighted average ruins coherence is not at all correct. The processed EEG data show the reality of the real world of EEG, which shows that when temporal sites are involved, linked ears is not the rational choice. When doing coherence measurements, the first step is to find the right montage to show the EEG "correctly", and then the coherence can be calculated off the time series provided from that data. You can see that the commonly stated though incorrectly held opinion that weighted average ruins coherence is not at all correct. The processed EEG data show the reality of the real world of EEG, which shows that when temporal sites are involved, linked ears is not the rational choice.

When doing coherence measurements, the first step is to find the right montage to show the EEG “correctly”, and then the coherence can be calculated off the time series provided from that data.

]]> Comment on Vilayanur S. Ramachandran MD, PhD Video Collection by AAPB 41st Annual Meeting : Personalized Medicine in the Age of Technology | blog.biofeedbackcentral.com http://qeegsupport.com/secrets-of-the-mind/comment-page-1/#comment-43 AAPB 41st Annual Meeting : Personalized Medicine in the Age of Technology | blog.biofeedbackcentral.com Tue, 12 Jan 2010 23:39:45 +0000 http://qeegsupport.com/?p=295#comment-43 [...] *Vilayanur S. Ramachandran, MD, PhD; Director of the Center for Brain and Cognition and Professor with the Psychology Department and Neurosciences Program at the University of California, San Diego, and Adjunct Professor of Biology at the Salk Institute * Regeneration and Stress at Work: Strategies for Improved Employee Health [...] [...] *Vilayanur S. Ramachandran, MD, PhD; Director of the Center for Brain and Cognition and Professor with the Psychology Department and Neurosciences Program at the University of California, San Diego, and Adjunct Professor of Biology at the Salk Institute * Regeneration and Stress at Work: Strategies for Improved Employee Health [...]

]]> Comment on Thinking happy thoughts: MindRoom in the works for Canucks by jrdavisphd http://qeegsupport.com/thinking-happy-thoughts-mindroom-in-the-works-for-canucks/comment-page-1/#comment-42 jrdavisphd Sun, 03 Jan 2010 22:42:56 +0000 http://qeegsupport.com/?p=512#comment-42 Jay, thanks for posting this interesting article. It's good to see that the Canadian media are helping to share the load for educating the public about neurofeedback. As well, it's encouraging that the article reports applications of neurofeedback to elite sports so that its value for more than challenges with health can be appreciated. Jay, thanks for posting this interesting article. It’s good to see that the Canadian media are helping to share the load for educating the public about neurofeedback. As well, it’s encouraging that the article reports applications of neurofeedback to elite sports so that its value for more than challenges with health can be appreciated.

]]> Comment on Letter to APA regarding qEEG by neridasaunders22 http://qeegsupport.com/200/comment-page-1/#comment-41 neridasaunders22 Wed, 16 Sep 2009 01:54:56 +0000 http://qeegsupport.com/?p=200#comment-41 Congratulations on such a valuable contribution to qEEG. The Renaissence for qEEG is here and it is time for people to listen. If we can support in Australia please let us know. Nerida Saunders President Applied Neuroscience of Australasia Congratulations on such a valuable contribution to qEEG. The Renaissence for qEEG is here and it is time for people to listen. If we can support in Australia please let us know.
Nerida Saunders
President Applied Neuroscience of Australasia

]]> Comment on Patterns seen in the qEEG and their indicated interventions by VanDeusen http://qeegsupport.com/patterns-seen-in-the-qeeg-and-their-indicated-interventions/comment-page-1/#comment-39 VanDeusen Mon, 13 Jul 2009 08:41:39 +0000 http://qeegsupport.com/?p=125#comment-39 Jay, I've just started working with a blind psychologist--lost his sight through a series of operations for glaucoma around the age of 14, so there are some trauma issues as well. He says he sees a sensation of light with eyes open, but no details or images. I'm interested in what you would expect to see vis-a-vis alpha in such a case. He shows high amplitudes of 6-8 Hz eyes-open and eyes-closed which drop significantly at task in the parietals. Centrals and Frontals also show dominance in that band, but it doesn't change much at task. In the 8-10 and 10-12 bands he shows little activity and no typical alpha activation with eyes closed. Any special suggestions relative to training someone who is blind (other than not to count much on visual feedback)? Thanks, Pete Jay,
I’ve just started working with a blind psychologist–lost his sight through a series of operations for glaucoma around the age of 14, so there are some trauma issues as well. He says he sees a sensation of light with eyes open, but no details or images. I’m interested in what you would expect to see vis-a-vis alpha in such a case. He shows high amplitudes of 6-8 Hz eyes-open and eyes-closed which drop significantly at task in the parietals. Centrals and Frontals also show dominance in that band, but it doesn’t change much at task. In the 8-10 and 10-12 bands he shows little activity and no typical alpha activation with eyes closed. Any special suggestions relative to training someone who is blind (other than not to count much on visual feedback)?
Thanks,
Pete

]]> Comment on Thalamic Involvement in the Generation of the Alpha Rhythms by Martijn Arns http://qeegsupport.com/thalamic-involvement-in-the-generation-of-the-alpha-rhythms/comment-page-1/#comment-38 Martijn Arns Thu, 09 Jul 2009 16:39:31 +0000 http://qeegsupport.com/?p=298#comment-38 Jay, Thanks for the excellent outline! I think this is an important contribution, indeed the real source of Alpha is not part of LORETA’s solution space which is important to be aware of. Furthermore, I agree that most research and databases have maybe not looked at alpha the way they should. Individualizing alpha is in my opinion very important. However, this is very hard to automate. Auto-scoring of the iAPF is really hard to do given that there are multiple alpha like sources e.g. central Mu rhythm, often 1-2 Hz faster; parietal alpha, sometimes occipital alpha which is faster tuned than the parietal alpha; frontal alpha which as you stated as well is often slower tuned and other variants such as temporal alpha and tau rhythm when using MEG. I think the only reliably way to score the iAPF is manually. This intrinsically makes it hard for researchers and databases to really incorporate personalized frequency bands based on APF. Regarding coherence… well… what is coherence….? I think there is not enough standardization in the research and QEEG field to clinically use coherence. The first step is to have guidelines about which methods of coherence to use and understand the implications of for example establishing coherence deviations using QEEG hardware and database X and feeding back coherence with equipment Y… these might both use different expressions for calculating coherence hence implicating that you might feedback something completely different then measured in the QEEG. Rob Coben and I are trying to get more insight into this by running the same EEG data from a group of Dyslexics through all databases and checking what the differences are. I hope this sheds more light onto this topic… All the best! Kind regards, Martijn Arns Director / QEEG-D Brainclinics Diagnostics B.V. Brainclinics Treatment B.V. Bijleveldsingel 34 6524 AD Nijmegen The Netherlands Tel: +31(0)24-7503505 GSM: +31(0)6-48177919 Fax: +31(0)24-8901447 E-mail: martijn@brainclinics.com URL: www.brainclinics.com Jay,

Thanks for the excellent outline!

I think this is an important contribution, indeed the real source of Alpha is not part of LORETA’s solution space which is important to be aware of.

Furthermore, I agree that most research and databases have maybe not looked at alpha the way they should. Individualizing alpha is in my opinion very important. However, this is very hard to automate. Auto-scoring of the iAPF is really hard to do given that there are multiple alpha like sources e.g. central Mu rhythm, often 1-2 Hz faster; parietal alpha, sometimes occipital alpha which is faster tuned than the parietal alpha; frontal alpha which as you stated as well is often slower tuned and other variants such as temporal alpha and tau rhythm when using MEG. I think the only reliably way to score the iAPF is manually. This intrinsically makes it hard for researchers and databases to really incorporate personalized frequency bands based on APF.

Regarding coherence… well… what is coherence….? I think there is not enough standardization in the research and QEEG field to clinically use coherence. The first step is to have guidelines about which methods of coherence to use and understand the implications of for example establishing coherence deviations using QEEG hardware and database X and feeding back coherence with equipment Y… these might both use different expressions for calculating coherence hence implicating that you might feedback something completely different then measured in the QEEG.

Rob Coben and I are trying to get more insight into this by running the same EEG data from a group of Dyslexics through all databases and checking what the differences are. I hope this sheds more light onto this topic…

All the best!

Kind regards,

Martijn Arns
Director / QEEG-D

Brainclinics Diagnostics B.V.
Brainclinics Treatment B.V.
Bijleveldsingel 34
6524 AD Nijmegen
The Netherlands

Tel: +31(0)24-7503505
GSM: +31(0)6-48177919
Fax: +31(0)24-8901447

E-mail: martijn@brainclinics.com
URL: http://www.brainclinics.com

]]> Comment on A discussion on LORETA software use and licensing. by Brian Milstead http://qeegsupport.com/261/comment-page-1/#comment-37 Brian Milstead Wed, 24 Jun 2009 05:02:31 +0000 http://qeegsupport.com/?p=261#comment-37 Ask a question and get an answer related to your post. We have a couple of authors here to answer questions. Ask a question and get an answer related to your post. We have a couple of authors here to answer questions.

]]> Comment on A discussion on LORETA software use and licensing. by J. Schaller http://qeegsupport.com/261/comment-page-1/#comment-36 J. Schaller Wed, 17 Jun 2009 16:02:18 +0000 http://qeegsupport.com/?p=261#comment-36 Hello I just found this site and the interesting article about loretta. I tried to find out how I can post a question on my own but I did not find the answer. So I reply to this posting. Can anybody tell me how I can ask questions to this forum? Do I have to install WordPress? Is it possible to install it without a website? Thank you for your help. Jörg Hello

I just found this site and the interesting article about loretta.
I tried to find out how I can post a question on my own but I did not find the answer. So I reply to this posting.
Can anybody tell me how I can ask questions to this forum? Do I have to install WordPress? Is it possible to install it without a website?

Thank you for your help.

Jörg

]]> Comment on Dementia and Alzheimer’s Disease: LORETA findings by Jay Gunkelman http://qeegsupport.com/dementia-and-alzheimers-disease-loreta-findings/comment-page-1/#comment-34 Jay Gunkelman Sat, 09 May 2009 17:39:12 +0000 http://qeegsupport.com/?p=284#comment-34 Leslie, I'm glad you found some utility in my short note on Dementia and EEG signatures. Thanks for the added tidbits of data. Dementia is an underutilized application area for EEG, as it provides a rich understanding of the brain's function that is unmatched with other imaging techniques. Enjoy! Jay Leslie,

I’m glad you found some utility in my short note on Dementia and EEG signatures.

Thanks for the added tidbits of data. Dementia is an underutilized application area for EEG, as it provides a rich understanding of the brain’s function that is unmatched with other imaging techniques.

Enjoy!

Jay

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