- Gerold Baier, Thomas Hermann, Oscar Manuel Lara,
Markus Müller (2005)
In Brazil, Eoin (Ed.) Proceedings of the International Conference on Auditory Display (ICAD 2005), p. 312--315, ICAD, International Community for Auditory Display, Limerick, Ireland
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Summary
We study cross-correlations in irregularly spiking systems. A single system displays spiking sequences that resemble a stochastic (Poisson) process. Linear coupling between two systems leaves the inter-spike interval distribution qualitatively unchanged but induces cross-correlations between the units. For strong coupling this leads to synchronization as expected but for weak coupling, both a good statistic and sonification reveal the presence of ``motifs'', preferred short firing sequences which are due to the deterministic spiking mechanism. We argue that the use of sonification for time series analysis is superior in the case where intrinsic non-stationarity of an experiment cannot be ruled out.- Audifications
S1a (mp3, 270k) compression factor 2
S1b (mp3, 90k) compression factor 6
S1c (mp3, 12k) compression factor 50
- Amplitude Modulation
S2a (mp3, 558k) rate 0.1
S2b (mp3, 484k) rate 0.2
S2c (mp3, 291k) rate 1
- Event-based rhythms
S3a (mp3, 407k) r=1 D=0
S3b (mp3, 412k) r=1 D=0.00125
S3c (mp3, 194k) r=5 D=0
S3d (mp3, 196k) r=5 D=0.00125
- Timbre mapping
S4a (mp3, 494k) 20sec D=0
S4d (mp3, 494k) 20sec D=0.00125
S4b (mp3, 1.4M) 60sec D=0
S4e (mp3, 1.4M) 60sec D=0.00125
S4c (mp3, 5.5M) 240sec D=0
S4f (mp3, 5.5M) 240sec D=0.00125
- Sonifications for coupling drift
S5a (mp3, 566k) D=0..0.005,20sec rhythm
S5b (mp3, 485k) D=0..0.005,20sec pitch deviation
S5c (mp3, 728k) D=0..0.005,20sec timbre
- Timbre Sonifications of Coupling drift
S6a (mp3, 494k) 20sec, D=0..0.00125
S6b (mp3, 728k) 30sec, D=0..0.00125
S6c (mp3, 494k) 20sec, D=0..0.005
S6d (mp3, 728k) 30sec, D=0..0.005
Contact
Thomas Hermann
Using sonification to detect weak cross-correlations in coupled excitable systems
Sonification examples
We provide the example sonifications described in the above paper