They wire subject's brains to computers and check to see responses, specific micro-electric one which occur when each memory is either called for or arises. The micro-electric signals are tagged so as to identify particular memory which has specific electronic pictures which fire from the brain.

For the purpose of inSelf yoga, this may be done during meditation but to observe the involuntary memory presentations in the mind. Patanjali listed memory as a nuisance operation (vritti). The details of its operation should be known by a yogi, especially since the majority of it is involuntarily arising in the mind, where it arrests the focus of the coreSelf.