Normalized auto- and cross-covariance functions for neuronal spike train analysis.
The normalized auto- and cross-covariance functions of discrete-time stochastic point process, used for quantitatively analyzing neuronal spike trains, were derived from the corresponding functions of general stochastic process using Kronecker delta functions. The auto-correlation and cross-correlation properties can be described as numerical differences on a monotonic scale ranging from -1 -1 to +1. A segmental integration method and a significance test for the normalized cross-covariance function estimate are suggested. Examples from real spike trains are illustrated, and Monte Carlo methods are used for controls and for testing the algorithms and computer programs.
D000200:Action Potentials; D000465:Algorithms; D004594:Electrophysiology / Q000379:methods*; D009010:Monte Carlo Method; D009474:Neurons / Q000502:physiology*; D009482:Neurophysiology / Q000379:methods*; D012815:Signal Processing, Computer-Assisted; D013269:Stochastic Processes