On the precision of neural computation with interaural time differences in the medial superior olive

Petr Marsalek; Pavel Sanda; Zbynek Bures

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arXiv · 2007.00524

On the precision of neural computation with interaural time differences in the medial superior olive

Petr Marsalek·Pavel Sanda·Zbynek Bures

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Abstract

Incoming sound is in cochlea and auditory nerve encoded into spike trains. At the third neuron of the auditory pathway, spike trains of the left and right sides are processed in brainstem nuclei to yield sound localization information. Two different localization encoding mechanisms are employed in two centers for low and high sound frequencies in the brainstem. The centers are superior olivary nuclei, medial and lateral. This paper contains analytical estimates of parameters needed in description of auditory coding in sound localization neural circuit. Our model spike trains are based on electro-physiological recordings. We arrive to best estimates for neuronal signaling with the use of just noticeable difference of the ideal observer. We describe spike timing jitter and its role in the spike train processing. All parameters are accompanied with detailed estimates of their values and variability. Intervals bounding all the parameter from lower and higher values are discussed.

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Petr Marsalek, Pavel Sanda, Zbynek Bures. 2020-07-01. On the precision of neural computation with interaural time differences in the medial superior olive. https://arxiv.org/abs/2007.00524

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