Are there any special product developments of mBrainTrain for Peter Gamma from www.petergamma.org? Demos of the Greentk Gelfree S3 cap where moved from Krisztián Hofstädter’s YouTube channel: to the channel of mBrainTrain: Demos of the Greentk Gelfree S3 cap where moved from Krisztián Hofstädter’s YouTube channel to the channel of mBrainTrain: After we talked to …