---
title: "Live Z-Score with Ultra Low Frequency 2 or 4 channel"
description: "The attached design will run 2 or 4 channels of live z-scores, and also reward changes in the ultra-low frequency (Slow Cortical Potential) using additional sound feedback.  It provides the standard \"Mark Smith\" type of PZOKUL training, and adds the…"
url: "https://brainmaster.com/kb-entry/id407/"
updated: "2025-12-03"
category: "Protocol Templates / Archive: BrainMaster 3.0 Series/Discovery and earlier Protocols Templates"
---

# Live Z-Score with Ultra Low Frequency 2 or 4 channel

The attached design will run 2 or 4 channels of live z-scores, and also reward changes in the ultra-low frequency (Slow Cortical Potential) using additional sound feedback.  It provides the standard "Mark Smith" type of PZOKUL training, and adds the SCP via. the Event Wizard.  Channels 1 and 2 are T3 and T4, referenced to linked ears.  Channel 3 and 4 can be anything, but are set to P3 and P4 in this design.  In addition to 4 channels of live z-scores (248 trainable z-scores), you can train the slow cortical potential difference between T3 and T4 similar to the Othmer approach.

In addition to the live z-score training, the design allows you to present a reward tone to the user when their slow cortical potential difference rises or falls for a continuous 1 second.  This is adjustable in the design.

This is an experimental design, and clinicians are encouraged to field-test it and provide modifications or feedback.  It provides the best of two worlds, in that you can record and train monopolar linked-ears data from T3, T4, and two other channels, and in addition have the true slow cortical potential derived from the DC amplifiers, as a second training modality at the same time.  This provides simultaneous normative database analysis and the benefits of monopolar recording, along with the ability to train a bipolar ultraslow signal at the same time.  This provides the unprecedented ability to do bipolar low-frequency training, while watching the EEG in a conventional sense, and also connected with a normative database for EEG biofeedback.

You can also replace T3 and T4 with any other pair of leads desired, using the Data Channels / Electrodes and Trainee Info control panel.  The design could also be modified to do monopolar DC/SCP training, in place of bipolar training.  With a Discovery, you would get up to 24 simultaneous EEG channels in addition to the 4 training channels, allowing you to acquire a full QEEG during the training, as well.

Note: All designs provided by BrainMaster, are for demonstration and illustration purposes only. It is the clinician's responsibility to ensure that any designs used provide the intended feedback.

[Echtzeit_Z-wert_plus_ultra_low.pdf](https://brainmaster.com/wp-content/uploads/2020/09/Echtzeit_Z-wert_plus_ultra_low-2.pdf)

[Z_Score_Mark_Smith_UL_with_Ultralow_Freq.bmz](https://brainmaster.com/wp-content/uploads/2020/09/Z_Score_Mark_Smith_UL_with_Ultralow_Freq-1.bmz)