BME 4900 Final Report - Biomedical Engineering - University of ...

BME 4900 FINAL REPORT 17Team 8Neural SiteOnset BeforeSaccadePeak Firing RateApproximate EndTimeAbducens Nucleus 5 ms 400-800 Hz 5 ms before saccadeendsContralateralSuperior Colliculus(SC)Ipsilateral ExcitatoryBurst Neurons (EBN)Ipsilateral InhibitoryBurst Neurons (IBN)Ipsilateral Long-LeadBurst Neurons(LLBN)20-25 ms 800-1000 Hz At saccadetermination6-8 ms 600-800 Hz 10 ms before saccadeends6-8 ms 600-800 Hz 10 ms before saccadeends20 ms 800-1000 Hz At saccadeterminationOmnipause Neurons(OPN)6-8 ms 150-200 Hz(before and after)At saccadeterminationTable 1: The neuron populations being modeled and the associated timings and frequencies.SynapseThe synapse is the chemical or electrical connection between two neurons. In thesynaptic terminal, which is the part of the neuron following the axon, action potentialfrequency causes the proportional release of neurotransmitter. In a circuit model, thisrelease may be modeled as a current pulse. To obtain similar behavior in this model, twocircuits are used: the tachometer and bilateral current source. The tachometer is shownin Fig. 14.