Simply put, a z-score is a measure of how far a particular data point is from the population mean. But, more technically, it’s a measure of how many standard deviations below or above the population mean a raw score is.
Z-score is also known as a standard score and it can be placed on a normal distribution curve. See chart.
Z-score normative database application during brain mapping will compare your brain patterns with normal patterns for age and gender.
Live Z-score Training (LZT) software allows NFB clinicians to train clients by comparing their live EEG brainwave data with an FDA approved database of over 600 adults and children to estimate the standard deviation.
Live Z-score Training (LZT) process in neurofeedback will allow the individual to learn how to self-regulate his/her own brainwaves using “feed back” through computer games/DVD’s.
Live Z-score Training (LZT) does not use thresholds; all feedback is governed by statistical ranges using real-time feedback for sounds, videos, games, or other feedback methods. This method reduces the number and length of sessions necessary to see changes. Also, the difficulty of the training may be changed without interrupting training.
Live Z-score Training (LZT) is not an automatic solution without an understanding of the individual brain dynamics. Training is tailored to what is appropriate and applicable to the individual client. That is why it is important to have a qEEG analysis for full planning and interpretation of the LZT training. It is also important to use multiple channels and targets for the brain to have enough information to achieve global improvements in self-regulation.