Multiple thought streams
Multiple thought streams is a state of mind in which a person has more than one internal narrative or stream of consciousness simultaneously occurring within their head. This can result in any number of independent thought streams occurring at the same time, each of which are often controllable in a similar manner to that of one's everyday thought stream.
These multiple coinciding thought streams can be experienced simultaneously in a manner which is evenly distributed and does not prioritize the awareness of any particular thought stream over another. However, they can also be experienced in a manner which feels as if it brings awareness of a particular thought stream to the foreground while the others continue processing information in the background. This form of multiple thought streams typically swaps between specific trains of thought at seemingly random intervals.
The experience of this effect can sometimes allow one to analyse many different ideas simultaneously and can be a source of great insight. However, it will usually overwhelm the person with an abundance of information that becomes difficult or impossible to fully process at a normal speed.
Multiple thought streams are often accompanied by other coinciding effects such as memory suppression and thought disorganization. They are most commonly induced under the influence of heavy dosages of psychedelic compounds, such as LSD, psilocybin, and mescaline.