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Serial Spike Time Correlations Affect Probability Distribution of Joint Spike Events

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https://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017021315530
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dc.creatorShahi, Mina
dc.creatorvan Vreeswijk, Carl
dc.creatorPipa, Gordon
dc.date.accessioned2017-02-13T12:19:54Z
dc.date.available2017-02-13T12:19:54Z
dc.date.issued2017-02-13T12:19:54Z
dc.identifier.citationFrontiers in Computational Neuroscience, Vol. 10, Article 139, 2016, S. 1-14
dc.identifier.urihttps://osnadocs.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017021315530-
dc.description.abstractDetecting the existence of temporally coordinated spiking activity, and its role in information processing in the cortex, has remained a major challenge for neuroscience research. Different methods and approaches have been suggested to test whether the observed synchronized events are significantly different from those expected by chance. To analyze the simultaneous spike trains for precise spike correlation, these methods typically model the spike trains as a Poisson process implying that the generation of each spike is independent of all the other spikes. However, studies have shown that neural spike trains exhibit dependence among spike sequences, such as the absolute and relative refractory periods which govern the spike probability of the oncoming action potential based on the time of the last spike, or the bursting behavior, which is characterized by short epochs of rapid action potentials, followed by longer episodes of silence. Here we investigate non-renewal processes with the inter-spike interval distribution model that incorporates spike-history dependence of individual neurons. For that, we use the Monte Carlo method to estimate the full shape of the coincidence count distribution and to generate false positives for coincidence detection. The results show that compared to the distributions based on homogeneous Poisson processes, and also non-Poisson processes, the width of the distribution of joint spike events changes. Non-renewal processes can lead to both heavy tailed or narrow coincidence distribution. We conclude that small differences in the exact autostructure of the point process can cause large differences in the width of a coincidence distribution. Therefore, manipulations of the autostructure for the estimation of significance of joint spike events seem to be inadequate.eng
dc.relationhttps://doi.org/10.3389/fncom.2016.00139
dc.rightsNamensnennung 4.0 International-
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/-
dc.subjectrenewal processeng
dc.subjectPoisson processeng
dc.subjectsynchronyeng
dc.subjectISIeng
dc.subjectjoint spike eventseng
dc.subjectcoincidence distributioneng
dc.subject.ddc610 - Medizin und Gesundheit
dc.titleSerial Spike Time Correlations Affect Probability Distribution of Joint Spike Eventseng
dc.typeEinzelbeitrag in einer wissenschaftlichen Zeitschrift [article]
dc.identifier.doi10.3389/fncom.2016.00139
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