Sonic Triptychon of the Human Brain
Author(s)
Hermann, Thomas
Baier, Gerold
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Abstract
This paper describes the motivation, data and sonification technique
for three sound examples on the auditory display of human
brain activity, selected and formatted as contribution to the ICAD
aural submission category. The human brain generates complex
temporal and spatial signal patterns whose dynamics correspond
to normal (e.g. cognitive) processes and as well as abnormal conditions,
i.e. disease. Our sonification technique Event-based Sonification
allows to render multi-channel representations of the multivariate
data so that temporal, spectral and spatial patterns can be
discerned. Being a scientific approach, the sonifications are reproducible,
systematic and the mapping is made transparent. Control
parameters help to increase the saliency of specific features in the
auditory display. This is demonstrated using data with sleep spindles,
a photic response and epileptic discharges. Since all ‘sonic
pictures’ are rendered with the same technique, a variety of dynamic
phenomena related to different brain states are demonstrated
as auditory Gestalts. Sonification of the EEG offers a meaningful
complement of the prevailing visual displays.
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Date
2010-06
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Text
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Proceedings