"The call for sonifications issued in connection with ICAD2004
presented a challenge to the scientific and artistic community: to
convert to sound 36 channels of data (mostly electro
encephalograms, but also heartbeat, respiration and other data)
recorded while a subject was listening to a piece of music.
The sonification presented here, entitled "What are you
really thinking?" attempts to use essentially all the data given
on the ICAD2004 website.
For this sonification, a distinction was made between the
scalp signals, the 26 data channels recorded from various
locations on the scalp of the subject, and the non-scalp signals,
including the recordings made near the eyes (the "eye signals"),
the masseter muscle signal, the electro-dermal signal, breathing
Each scalp signal is considered as a sound source and
converted to a stream of notes, as explained below. Most of
the non-scalp signals control aspects of the streams of notes, but
do not generate sound directly. However, the heartbeat signal is
also used as a sound source.
The streams of notes are spatialised according to the
coordinates of the scalp electrode positions, but with
modifications due to the eye signals.
The main aspect of the sonification is the representation of
scalp EEG activity as pitches directly corresponding to the
frequencies occurring in the scalp signals."
Ausschnitt anhören (00:30)
Listening to the Mind Listening