I’ven been delving into EEG for neuropsychological practice and I’ve come accross Swingle’s technique called ClinicalQ which involves doing specific measurements on the CZ, O1, F3, F4, FZ sites.
The measurements should be done independently so a single channel device would suffice.
However I must confess, as a novice, I’m lost in the area with the variety of hardware and software systems.
Linked below is an example of the type of data I’d need from the EEG device in order to apply this diagnostical tool:
Depending on your definition of low-cost, a Brainmaster system may be the way to go. Years ago I got a used Brainmaster and was very impressed, everything I needed was in one package, ie hardware and the software to analyze the results.