Mind machine

[4] This "stroboscopic photo-stimulation produces 'photic driving', the alpha type of brain electrical activity associated with an altered state in which people are susceptible to suggestion".

[6] The development of alpha EEG feedback (see neurofeedback) is an important starting point for biofeedback and its explicit use for entering altered states of consciousness.

[7] Enterprises started to produce different types of mind machines and some scientists followed the line of research to explore if and how these devices elicit effects on brain processes.

[citation needed] Nowadays, mind machines are rediscovered by some teenage cultures as so called “digital drugs”, a legal way to enter altered states of consciousness.

[10] Mind machines include flashing light devices, which are similar to the Brion Gysin dreamachine in that both produce a flickering visual field.