Cerebellar Nuclear Neurons Use Time and Rate Coding to Transmit Purkinje Neuron Pauses

Shyam Kumar Sudhakar, Ben Torben-Nielsen, Erik De Schutter

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
114 Downloads (Pure)

Abstract

Neurons of the cerebellar nuclei convey the final output of the cerebellum to their targets in various parts of the brain. Within the cerebellum their direct upstream connections originate from inhibitory Purkinje neurons. Purkinje neurons have a complex firing pattern of regular spikes interrupted by intermittent pauses of variable length. How can the cerebellar nucleus process this complex input pattern? In this modeling study, we investigate different forms of Purkinje neuron simple spike pause synchrony and its influence on candidate coding strategies in the cerebellar nuclei. That is, we investigate how different alignments of synchronous pauses in synthetic Purkinje neuron spike trains affect either time-locking or rate-changes in the downstream nuclei. We find that Purkinje neuron synchrony is mainly represented by changes in the firing rate of cerebellar nuclei neurons. Pause beginning synchronization produced a unique effect on nuclei neuron firing, while the effect of pause ending and pause overlapping synchronization could not be distinguished from each other. Pause beginning synchronization produced better time-locking of nuclear neurons for short length pauses. We also characterize the effect of pause length and spike jitter on the nuclear neuron firing. Additionally, we find that the rate of rebound responses in nuclear neurons after a synchronous pause is controlled by the firing rate of Purkinje neurons preceding it.

Original languageEnglish
Article numbere1004641
JournalPLoS Computational Biology
Volume11
Issue number12
DOIs
Publication statusPublished - 2 Dec 2015

Fingerprint

Dive into the research topics of 'Cerebellar Nuclear Neurons Use Time and Rate Coding to Transmit Purkinje Neuron Pauses'. Together they form a unique fingerprint.

Cite this