Supplementary Material for "Event-based sonification of EEG rhythms in real time"

Baier G, Hermann T, Stephani U (2007)
Bielefeld University.

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Baier, Gerold; Hermann, ThomasUniBi ; Stephani, Ulrich
Abstract / Bemerkung
+ OBJECTIVE: To introduce a sound synthesis tool for human EEG rhythms that is applicable in real time. + METHODS: We design an event-based sonification which suppresses irregular background and highlights normal and pathologic rhythmic activity. + RESULTS: We generated sound examples with rhythms from well-known epileptic disorders and find stereotyped rhythmic auditory objects in single channel and stereo display from generalized spike-wave runs. For interictal activity, we were able to separate focal rhythms from background activity and thus enable the listener to perceive its frequency, duration, and intensity while monitoring. + CONCLUSIONS: The proposed event-based sonification allows quick detection and identification of different types of rhythmic EEE events in real time and can thus be used to complement visual displays in monitoring and EEG feedback tasks. + SIGNIFICANCE: The significance of the work lies in the fact that it can be implemented for on-line monitoring of clinical EEG and for EEG feedback applications where continuous screen watching can be substituted or improved by the auditory information stream.
Erscheinungsjahr
2007
Page URI
https://pub.uni-bielefeld.de/record/2699880

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Baier G, Hermann T, Stephani U. Supplementary Material for "Event-based sonification of EEG rhythms in real time". Bielefeld University; 2007.
Baier, G., Hermann, T., & Stephani, U. (2007). Supplementary Material for "Event-based sonification of EEG rhythms in real time". Bielefeld University. doi:10.4119/unibi/2699880
Baier, G., Hermann, T., and Stephani, U. (2007). Supplementary Material for "Event-based sonification of EEG rhythms in real time". Bielefeld University.
Baier, G., Hermann, T., & Stephani, U., 2007. Supplementary Material for "Event-based sonification of EEG rhythms in real time", Bielefeld University.
G. Baier, T. Hermann, and U. Stephani, Supplementary Material for "Event-based sonification of EEG rhythms in real time", Bielefeld University, 2007.
Baier, G., Hermann, T., Stephani, U.: Supplementary Material for "Event-based sonification of EEG rhythms in real time". Bielefeld University (2007).
Baier, Gerold, Hermann, Thomas, and Stephani, Ulrich. Supplementary Material for "Event-based sonification of EEG rhythms in real time". Bielefeld University, 2007.
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Sonification of background activity in recording Fz-Cz in patient 1. Data displayed in Fig. 2, top; waveform W and spectrogram in logarithmic scale in Fig. 2, center and bottom.
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2019-09-25T06:33:32Z
MD5 Prüfsumme
5b31c51dd1fa50d2a121b961003d447a
Beschreibung
Background and absence seizure in patient 2, channel T4 as in Fig. 3, top. Waveform and spectrogram in Fig. 3, center and bottom.
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2019-09-25T06:33:32Z
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18cb7f0b527d9a1200a55665f21df137
Beschreibung
Background and absence seizure in patient 2, channels T4 (left) and F4 (right) in stereo panning starting from second 20 in Fig. 3. Oscillator frequency is 200 Hz for channel T4, and 300 Hz for channel F4. Waveform and spectrogram in Fig. 4, top and bottom.
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2019-09-25T06:33:32Z
MD5 Prüfsumme
784c338847dcecc12f103ac12c22ae9b
Beschreibung
Sonification of focal activity in Fz-Cz in patient 1. Data displayed in Fig. 5 (top, lower trace). Waveform and spectrogram in Fig. 5, center and bottom.
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OA Open Access
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2019-09-25T06:33:32Z
MD5 Prüfsumme
bd827dac8fd672a7183ab268fcb2cd2d
Beschreibung
Interictal focal activity in patient 1 with improved rhythm/background ratio in (Fz-Cz)-(Cz-Pz). Sonification of two consecutive transients. Data in Fig. 6 (top); waveform and spectrogram in Fig. 6, center and bottom.
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2019-09-25T06:33:32Z
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f69f2a81e8cfca6bf1a7e6df1b759689
Beschreibung
Interictal focal activity in patient 1 with improved rhythm/background ratio and quadratic mapping of the number of harmonics. Sonification of a longer segment with various transients. Waveform and spectrogram in Fig. 7, top and bottom.
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2019-09-25T06:33:32Z
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a271e69c6a0c81d08d8fd9cd407716dd
Beschreibung
Seven glued together segments of interictal focal activity in patient 1. Improved rhythm/background ratio and quadratic mapping of the number of harmonics. Sonification as in Sound 6 but with three channel stereo display: (Fz-Cz)-(Cz-Pz) (middle); (C3-F3)+(C4-F4) (right); -(P3-O1)-(P4-O2) (left). Waveform and spectrogram in Fig. 8, top and bottom.
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2019-09-25T06:33:32Z
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26658bdc914caf517820113f07b9e963
Beschreibung
Background and transition to seizure activity in patient 1. Data in Fig. 9; waveform and spectrogram in Fig. 10, top and bottom.
Access Level
OA Open Access
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2019-09-25T06:33:32Z
MD5 Prüfsumme
6f13942ad8abe3c71e768ba22a230749

Material in PUB:
Wird zitiert von
Temporal Perspective from Auditory Perception
Baier G, Hermann T (2008)
In: Simultaneity: Temporal Structures and Observer Perspectives. Vrobel S, Rössler OE, Marks-Tarlow T (Eds); Singapore: World Scientific: 348-363.
Wird zitiert von
Event-based sonification of EEG rhythms in real time
Baier G, Hermann T, Stephani U (2007)
Clinical Neurophysiology 118(6): 1377-1386.

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