Variables describing unit discharges from multiunit extracellular records were treated, using multivariate statistical analysis for further automatic spike separation. A spike was described by 8 parameters (3 amplitude values, 3 time values and 2 slopes). These 8 parameters were summarized by 2 new independent factors, the principal components (PC). Examination of the 2 PCs from each spike allowed the observer to determine PC families corresponding to spike populations. From these the spikes were automatically classified. PC analysis showed groups of redundant parameters. Elimination of redundancy decreased the computing time without lowering the separation efficiency of the method. Three parameters turned out to be sufficient for spike discrimination: the maximum and the minimum amplitudes and the time between these. This agrees well with the physical basis of current propagation in the conducting medium, from the firing neurone to the recording electrode.
An educable wave form recognition program suitable for on-line discrimination of extracellular single units
Stimulus dependent neural correlations in the auditory midbrain of the grassfrog (Rana temporaria L.)
Functional-statistical analysis of action potentials in the multineuronal activity of the brain of awake cats
Effects of excitotoxic striatal lesions on single unit activity in globus pallidus and entopeduncular nucleus of the cat
Multifold features determine linear equation for automatic spike detection applying neural nin interictal ECoG
Single unit components of the hypothalamic multiunit electrical activity associated with the central signal generator that directs the pulsatile secretion of gonadotropic hormones
A procedure for decomposing the myoelectric signal into its constituent action potentials--Part I: Technique, theory, and implementation
Bursting properties of units in cat globus pallidus and entopeduncular nucleus: the effect of excitotoxic striatal lesions
Spontaneous neuronal unit activity in the primate basal ganglia and the effects of precentral cerebral cortical ablations
The temporal structure of spike trains in the primate basal ganglia: afferent regulation of bursting demonstrated with precentral cerebral cortical ablation
Decomposition of Multi-Channel Intramuscular EMG Signals by Cyclostationary-Based Blind Source Separation
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