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.
