Lens uses the same type of sensors and EEG amplifier used in traditional neurofeedback. In traditional neurofeedback the feedback is presented in tones, visual displays, simple games or DVD feedback.
In LENS the feedback is a very low power electromagnetic field or signal, like the ones that surround digital watches and wires in the wall. The feedback travels down the same wires carrying the brain waves to the amplifier and computer. Although the feedback signal is weak, it produces a measurable change in the brainwaves without conscious effort from the individual receiving the feedback. The LENS software allows the EEG signals that are recorded at the scalp to control the feedback. The feedback signal is at a frequency that is different from, but correlates with, the dominant brainwave frequency. When exposed to this feedback frequency, the EEG amplitude distribution changes. Most of the time the brain waves reduce in power; but at times they also increase in power. In either case the result is a changed brainwave state, and much greater ability for the brain to regulate itself.
LENS is a whole head approach, whereby there is a process of rapidly assessing all 19 sites (in a non-normative database way) to help identify the optimal training process. Depending upon a person’s reactivity and hardiness one to seven sites are trained in a session. Training sessions may only take approximately fifteen minutes dependent upon the number of sites trained.
Information about LENS can be seen at www.ochslabs.com and in The Healing Power of Neurofeedback (2006) by Steve Larsen, Ph.D
Lens Suppression Map- a metric that guides the order of site training
