Dispersion along fiber tracts and in the coupling between tracts and a cortical network.
Dispersion in a neuronal coritcal network was modeled using CSMP, a Continuous Systems Modeling Program. The signal dispersion over pathways was simulated by use of a serial product approximating the convolution integral. The program was written in a sufficiently general format to be applied to a variety of biological signals. Calculated signals from a fiber tract and activation of a cortical network were compared with experimental data from cats. The network consists of excitatory cells in a forward limb which send collaterals to interneurons that, once excited, feed back to inhibit the excitatory cells. The model was consistent with data from neuronal assemblies in the prepyriform cortex and fibers in the lateral olfactory tract.
D000200:Action Potentials; D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D002415:Cats; D002540:Cerebral Cortex / Q000502:physiology*; D003201:Computers; D005552:Forelimb / Q000294:innervation; D007395:Interneurons / Q000502:physiology; D008959:Models, Neurological; D009424:Nervous System Physiological Phenomena; D009433:Neural Inhibition; D009434:Neural Pathways / Q000502:physiology*; D011712:Pyramidal Tracts / Q000502:physiology; D009435:Synaptic Transmission