Squash and Squish

The Brain-Trainer Squash designation uses 2-38 Hz, so you train down the whole band. If the brain is dominated by 23-38, for example, that frequency is most likely be be affected by the Squash, but the Squash also protects against other frequencies surging up as the high-beta goes down.

The Squish is a mini-Squash. It combines 2 channels of signal at a selected frequency (23-38 is one option) and trains down the total.

The frequency (FRE) designs allow trainers to do squishes, squashes and windowed squashes (with open or closed windows), including using different bands in the 2 channels, in a single design that uses buttons