How is ISF Different Than Other Neurofeedback?

The distinctive impact of ISF neurofeedback resides in the training of the “ISF band” which is below 1 Hertz. The physiological changes and regulation of the autonomic nervous system that we see in ISF training occur simply because those are the functions that are coordinated by that band. ISF is considered an ‘organizing’ rhythm; promoting fluid and timely brain function. In concept, when we train the ISF signal, we are supporting clients in their ability to globally regulate their systems.

This area of the very low frequencies was originally overlooked by early researchers and clinicians as they designated it as ‘noise.’ As interest in these frequencies grew, progress was further slowed because the special equipment necessary to render these low frequencies effectively was not available. This problem was solved in the early 1990s, by the development of high-speed computers and the availability of DC-coupled amplifiers. At that time, ISF band neurofeedback became more like other forms of training.

We know from our research that the ISF band is involved in regulating autonomic behavior; the autonomic nervous system balance between parasympathetic (rest, digest) and sympathetic (fight, flight or freeze) activation. As such, many clients experience an in-session physiological change. This can happen quite quickly, often in the first session. For example, a client may arrive at the office in an agitated and anxious state, with a dry mouth, and cold hands. Following the session, the client may present in a calmed state with regulated physiological function.

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