Different methods of Neurofeedback Treatment include amplitude training, Z-score Training, and Infraslow Fluctuation Training.
4.1 Amplitude or Power Training: refers to the amount of power in a signal or the amplitude of a particular frequency band. There may be either an excess or a deficit of amplitude within a frequency range which is either inhibited or enhanced (rewarded) during the training.
4.2 Z-score Training: The use of z-scores implements the concept of a normal distribution or standard deviation pertaining to the increase and decrease of amplitudes in all the frequency bands relative to persons of the same age.
4.3 Infraslow Fluctuation Training: Infra-Slow (ISF) Focuses on the lowest energy that the brain produces (<0.1Hz). Research indicates that it regulates autonomic functioning.
ISF training finds the optimal frequency of each person and trains it to become more prominent. Finding the correct frequency for a radio station is a good analogy to finding the optimal frequency of a person. When a radio is not tuned into the correct frequency of a station it will distort the sound. If a person is not functioning at his optimal level functional deficits are present.