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Name
ISI-Distance - Measure for Spike Train Synchrony
Byline
Institute for Nonlinear Science, University of California San Diego
Description
The ISI-distance is a simple method to estimate the degree of synchrony or reliability between two spike trains. In contrast to previous approaches that typically compare the timing of spikes, this method extracts information from the interspike intervals by evaluating the ratio of the instantaneous firing rates. It has the distinct advantage of being parameter free and time scale independent. Whereas existing measures mostly depend on a certain time scale to be optimized by the analyst this method is self-adaptive in that it automatically identifies the proper time scale. Thus it can also be applied to spike trains that include different time scales (i.e., regular spiking and bursting). Since no parameter has to be fixed the analyst is removed from the analysis, allowing for a more objective and broadly comparable measure of neuronal synchronization. Finally, the ISI-distance also serves as an excellent means to visualize the occurrence of spiking pattern in the respective spike trains.
NIfTI-1 support
Creator
Thomas Kreuz
Contact
tkreuz@ucsd.edu
WWW
http://inls.ucsd.edu/~kreuz/Source-Code/Spike-Sync.html
Availability
Webpage
How to get
http://inls.ucsd.edu/~kreuz/Source-Code/Spike-Sync.html
Current version
1.0
Current version release date
27/06/2007
Open source
Yes
License
Available free of charge
Yes
Requirements
Technical publications
Kreuz T, Haas JS, Morelli A, Abarbanel HDI, Politi A: Measuring spike train synchrony. J Neurosci Methods 165, 151 (2007). http://dx.doi.org/10.1016/j.jneumeth.2007.05.031. Alternatively try this: http://arxiv.org/abs/physics/0701261
Applications publications
Other information
Keywords
spike train synchrony, statistical, visualization
Platforms
MATLAB
IATR listing last updated
01 Aug 2007