Two, four and nineteen channel Instantaneous Z Scour EEG Biofeedback is available for distribution to qualified developers. A simple to use "Dynamic Link Library" or DLL based on the statistics of NeuroGuide can be implemented in a few hours using only four call functions. Stream the time series of A-to-D raw EEG values to the DLL and the DLL returns two hundred and forty eight Z scores in one microsecond for each time sample. The DLL provides real-time normative database comparisons for absolute power, power ratios, relative power, coherence, phase delays and amplitude differences.

There are many potential uses of real-time EEG statistical analyses such as:

EEG Biofeedback

ICU monitoring of the EEG for immediate feedback

Battle field assessments of the EEG

Active task evaluations using instantaneous EEG analyses

Anesthesia monitoring using statistical evaluation of the EEG

etc.

Download DLL-CVI Installer

Video of Introduction to Z Score Biofeedback
by Robert Thatcher, Ph.D.

Download Documentation on EEG & 19 Channel Z Score Neurofeedback

History of the EEG Neuroimaging Biofeedback Z Score DLL

An example of a potential use of instantaneous statistical analyses of the EEG is in EEG Biofeedback where the moment to moment comparison to a reference normal group of subjects is computed in real-time. The idea is to use Z Scores as a threshold and to reinforce Z = 0, or Z = + or - 1, or a range of Z Scores depending on the judgment of the qualified biofeedback specialist. The use of Z scores for biofeedback reduces the complexity of biofeedback of voltages and ratios and coherence, etc. to a single metric, the metric of a Z Score (i.e., Z = (mean-subject)/st. dev). No longer wonder if coherence should increase or decrease or phase delay should shorten or lengthen or absolute power should increase or decrease for a given scalp location or a given age.

The Z Score biofeedback program is released by DeyMed, Inc., Brainmaster, Inc., Thought Technology, Ltd., Advanced Brain Monitoring and Mind Media, Inc (NeXus), NeuroField. Each company uses their respective hardware and software environments to implement the Z Score program dynamic link library for purposes of biofeedback. Please contact the individual companies to read documentation about exactly how they implemented the program and exactly how it works inside of their individual and well tested biofeedback environments. A permanent 1st license and a renewable 2nd license will be issued only with the 1st purchase of the Z Score dll by the same single user. A renewable 2nd license will not be issued for additional purchases of the Z Score dll by the same single user.

Click Here to Download 19 Channel Z Score Documentation

Note: No License transfers from one single-user to a another person is permitted as per the US Copyright agreement agreed to when activating the DLL program>