title: A multi-timescale adaptive threshold model for the SAI tactile afferent to predict response to mechanical vibration.
abstract: The Leaky Integrate and Fire (LIF) model of a neuron is one of the best known models for a spiking neuron. A current limitation of the LIF model is that it may not accurately reproduce the dynamics of an action potential. There have recently been some studies suggesting that a LIF coupled with a multi-timescale adaptive threshold (MAT) may increase LIF's accuracy in predicting spikes in cortical neurons. We propose a mechanotransduction process coupled with a LIF model with multi-timescale adaptive threshold to model slowly adapting type I (SAI) mechanoreceptor in monkey's glabrous skin. In order to test the performance of the model, the spike timings predicted by this MAT model are compared with neural data. We also test a fixed threshold variant of the model by comparing its outcome with the neural data. Initial results indicate that the MAT model predicts spike timings better than a fixed threshold LIF model only.
authors.affiliation: Department of Systems and Information Engineering, University of Virginia, Charlottesville, VA, 22904, USA ( anila@virginia.edu ).
authors.forename: Anila F
authors.initials: AF
authors.lastname: Jahangiri
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Gerling