From science to science-fiction

Sometimes these notes were close to science, sometimes they were closer to entertainment. When discussing the audification process some quite strange options emerged. I had some doubts about including the contents of this chapter. Do not take them too seriously

• The brain as an instrument. In certain sense the brain acts like an instrument. We could play the brain. If we give a stimulus (a flash, a click...) we get an evoked potential. The shape of this note changes with the position of the electrode on the head, so some polyphonic sounds could be created. By setting the stimulus rate considering the acceleration of the audification process, a melody could be played. (WARNING: Don't try to do this. Consider that the repetition of a stimulus is not an innocent technique: among other troubles it can induce epileptic seizures).
• Hearing the synchrony of physiological signals between persons. We could hear simultaneously the sounds of the body of several persons and we could hear the relations between them.
• Hearing a culture. A lot of people living together act as an organism. In a certain sense, the whole brain acts like a community (if you are interested in this issue you could read The social brain by Michael Gazzaniga). A group of people have its own sound created by the sounds of its individual participants. Brain sounds differ between sleep and wakefulness, between younger and older people, between deep and light sleep... If we hear a sample from some people, we could hear how young or how sleepy a society is. We could even hear the effect of an external shock or some other strong stimulus affecting the whole group.

They are only examples to show the analogy between sounds and physiological signals.

You probably will have other similar ideas. Let us know. We would like to know about them...