Sonification Examples for:
Multi-Channel Sonification of Human EEG
Authors: Gerold Baier, Thomas Hermann, Ulrich
Stephani
Conference: International
Conference on Auditory Display (ICAD 2007), Montreal, Canada,
June, 2007
Abstract
The electroencephalogram (EEG) provides a diagnostically important
stream of multivariate data of the activity of the human brain. Various
sonification strategies have been proposed but auditory space has
rarely been used to give cues about the location of specific events.
Here we introduce a multivariate event-based sonification that, in
addition to displaying salient rhythms, uses pitch and spatial location
to provide such cues. Using clinical recording with epileptic seizures
we demonstrate how the spatio-temporal characteristics of EEG can be
perceived in such an approach.
Article Link: BaierHermannStephani2007-MCS.pdf
(available soon)
Sonification Examples
- Sound S1 (mp3, 1.8M):
- Event-based sonification of an EEG
section of patient 1 with generalized absence seizure.
- Reduced speed,
approx. 2/3 of real time.
- 8 channels from electrodes [Fp1, Fp2, F3, F7,
F8, P8, FZ, PZ].
- Filter tuning: cf1=3.0, bw1=2.5, cf2=14.0, bw2=3.5.
- Sound S2 (mp3, 1.7M):
- EBS of the EEG section in sound S1 with
generalized absence seizure.
- Real-time (256 samples/s).
- All 19
electrodes of the 10-20 standard EEG [Fp1, Fp2, F3, F4, C3, C4, P3, P4,
O1, O2, F7, F8, T7, T8, P7, P8, Fz, Cz, Pz].
- Filter parameters as in S1.
- Sound S3 (mp3, 292k):
- EBS of EEG section with focal onset seizure in
patient 2 with frontal focus.
- Real-time.
- 20 electrodes in the modified
10-10 standard [FP2, F10, T10, F8, T8, P8, F4, C4, P4, FPZ, FZ, CZ,
FP1, F3, C3, P3, F7, T7, P7, F9].
- Filter tuning: cf1=3.0, bw1=2.5,
cf2=14.0, bw2=3.5.
- Sounds S4a/S4b:
- EBS of EEG section with focal onset seizure of
patient 2 as in Sound S3.
- Real time.
- Filter tuning as in S3.
- S4a (mp3, 312k):
Electrodes [Fp2, F4, C4, P4].
- S4b (mp3, 300k):
Electrodes [F10, T10, F8, T8].
- Sound S5 (wav, 11.5M):
- EBS as in S3, except: 8 channel audio output.
- Sound S6 (wav, 41.5M): (smaller stereo downmix: S6 (mp3, 1M))
- EBS of EEG section with focal onset seizure in
patient 3 with frontal focus.
- Real-time.
- 20 Electrodes in the 10-10
standard [FP2, F10, T10, F8, T8, P8, F4, C4, P4, FPZ, FZ, CZ, FP1, F3,
C3, P3, F7, T7, P7, F9].
- Filter tuning: cf1=3.0, bw1=2.5, cf2=13.0,
bw2=2.5.
modified 2007-02-09,
thermann(at)techfak.uni-bielefeld.de