Cells in primary auditory cortex respond preferably to frequency sweeps of a certain rate and direction. In a model by Fishbach et al. [J. Neurophysiol. 90 (2003) 3663-3678], direction selective cells emerged through patterned thalamocortical projections. The thalamic inputs to the auditory cortex were modeled as time-varying firing rates without explicit spikes. We investigate the biophysical constraints for the emergence of direction selectivity using a model that includes spiking thalamic neurons. We find that directional selectivity can still be achieved for a broad range of parameter values using an architecture similar to that proposed previously for visual cortex models. Furthermore, recurrent connections could improve the directional selectivity of the neurons. © 2006 Elsevier B.V. All rights reserved.
CITATION STYLE
Kasess, C. H., Buia, C. I., & Tiesinga, P. H. E. (2006). A biophysical model of frequency-sweep selectivity in primary auditory cortex. Neurocomputing, 69(10–12), 1165–1168. https://doi.org/10.1016/j.neucom.2005.12.067
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