Neurofeedback
ISF / ILF / ISO Neurofeedback
Work with the slowest rhythms in your brain, the ones that set the pace for the rest.
< 0.1 Hz
the slowest brain rhythms
Networks
coordinates large-scale activity
Coupling
slow waves pace faster ones
Overview
What is ISF / ILF / ISO?
Beneath the familiar brainwaves are extremely slow fluctuations in brain activity, cycling less than once every ten seconds. These infra-slow fluctuations (ISF), also described as infra-low frequency (ILF) or infra-slow oscillations (ISO), help coordinate large brain networks and are closely tied to your overall level of arousal, stress regulation and emotional balance.
These slow rhythms also influence faster brainwaves through a process called cross-frequency coupling: the slow wave sets the timing for when faster activity occurs, much like a conductor setting the tempo for an orchestra. By training at this foundational level, ISF/ILF/ISO neurofeedback aims to help your brain regulate itself more steadily across many functions.
How it works
Your treatment, step by step
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01
Assess
We review your brain map and symptoms to choose training locations.
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02
Tune
Training is adjusted session by session to the frequency where you feel most calm and regulated.
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03
Train
Feedback reflects your slow-wave activity, helping your brain settle into a steadier rhythm.
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04
Integrate
Often paired with HRV training or other neurofeedback for a complete plan.
May help with
Conditions this treatment supports
Your provider will recommend whether ISF / ILF / ISO belongs in your plan based on your brain map and symptoms.
Works well with
Often combined with
Traditional EEG Power Neurofeedback
Real-time feedback that helps your brain turn down overactive brainwaves and strengthen underactive ones.
Learn moreZ-Score Training Neurofeedback
Compares your live brain activity to a normative database and rewards movement toward typical, balanced function.
Learn moreHRV Training
Heart rate variability biofeedback uses paced breathing to strengthen your rest-and-digest response.
Learn moreReady to see what your brain map reveals?
Book a consultation in our Nashville office or by video from anywhere in the world. Our team will review your symptoms and recommend a personalized plan.