I have discussed working memory training in various earlier posts, for example this one . Here is an interesting post from the grandson of the late inventor of Hemoencephalography (HEG) Neurofeedback, comparing it to Dual n-back, a simple working memory game of unbounded difficulty…
My grandfather invented and develops HEG. I worked with him in LA for a few months, and have one of his HEG devices in my possession.
My experience is that doing DNB often, but not always, gives me somewhat similar physical sensations in my head as when I do HEG at
FP2 (above the right eyebrow). Doing DNB, I tend to feel my heartbeat
more strongly in my head, my peripheral vision begins to fade, depth
perception fades, and I get dizzy. Doing HEG, I feel my heartbeat
much more strongly in my head underneath the HEG measurement site,
occasionally my peripheral vision (and sometimes my more central
vision) fades to white, I feel intensely – almost aggressively –
focused, and I feel myself being pulled forward. This makes me think
that in some domain, HEG and DNB are similar. I think DNB places very
heavy demands on the dorsolateral prefrontal cortex (DLPFC), which
causes very high activation, metabolism, and blood flow in that area;
when HEG is performed at FP2 (roughly DLPFC), it also causes very high
activation, metabolism, and blood flow in that area.
That said, I think that DNB and HEG are also very different. DNB
activates neurons based on their function, whereas HEG activates
neurons based on their location. Function and location are
correlated, but not all neurons in the DLPFC do things that help
working memory and intelligence, whereas it’s likely that more of the
neurons activated by DNB will. HEG is probably more intense than DNB
usually is, though, since as you are training on metabolism instead of
function, it’s likely that the local peak metabolic rate induced by
HEG is greater than that usually induced by DNB. Also, HEG has
flexibility that DNB does not, since you can place the HEG headband on
any site of the head that you want.
UOchris1, keep in mind that HEG works on cerebral blood flow (a proxy
for metabolic activity), not on brainwaves. Also, HEG is not relaxing
at all. It feels a lot more like lifting weights. Your comments
might be accurate for EEG neurofeedback, but not HEG.
You can find some semi-scientific articles and presentations at the
following link:
http://www.biocompresearch.org/biofeedback-institute-research.html
And the Biocomp Research Institute is the institute my grandfather
(Hershel Toomim) founded and runs:
http://www.biocompresearch.org
Hope that helps,
Jonathan Toomim
Toomim is of course referring to Near Infrared HEG (nirHEG). The inventor of the other form of HEG (Jeffrey Carmen), Passive Infrared HEG (pirHEG), can be found through the following link:
http://www.stopmymigraine.com/
The fact that these technologies can be used in a portable manner, has led to various sites online making both HEG systems available for sale to the general public. One site that is targeting the market of a developing country, India, is Cerebra Brain Technologies…
Cerebra Brain Technologies is engaged in bringing state-of-the-art Brain Enhancement Technologies to India and to other parts of the world.
Its maiden product offering, Cerebra TurboBrain, a revolutionary technique for enhancing Cerebral Blood Flow, using Infra-red sensors and computers showing real-time measures of Cerebral Blood Flow, has been launched.
And soon to follow are a slew of other literally ?mind-boggling? technologies using a variety of methods, all non-medicine based, all non-invasive, all completely safe, tried and tested.
Cerebra Brain Technologies? mission is to improve lives by enhancing mental capabilities. This helps Students, Business Executives, Athletes and other Professionals.
Additionally, these technologies have now been launched in India and elsewhere for clinical uses such as for Migraines, Insomnia, Traumatic Brain Injury, Cerebral Palsy, Autism, Attention Deficit, ADHD, Asperger’s Syndrome and many other brain disorders.
All of Cerebra BrainTech ?s offerings are based on solid clinical evidence done in various countries.
(sources: http://groups.google.com/group/brain-training/browse_thread/thread/2253760307651359/ ; http://cerebrabraintech.com/about-us )