Submillisecond monaural coincidence detection by octopus cells
Lu, H.-W.; Smith, P.H.; Joris, P.X. (2018). Submillisecond monaural coincidence detection by octopus cells. Acta Acustica United With Acustica 104(5): 852-855. https://dx.doi.org/10.3813/AAA.919238
In: Acta Acustica United With Acustica: Stuttgart. ISSN 1610-1928; e-ISSN 1861-9959, more
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| Authors | | Top |
- Lu, H.-W., more
- Smith, P.H.
- Joris, P.X., more
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| Abstract |
In vitro and in silico studies have suggested that octopus cells in the mammalian posterior ventral cochlear nucleus (PVCN) are monaural coincidence detectors that encode the temporal structure of complex sounds. In vivo studies on these neurons, however, are rare due to several technical difficulties. We used sharp high-impedance electrodes in anesthetized gerbils to study the responses of octopus cells to click trains. We find that, even though octopus cells only fire an onset spike to pure tones, they fire in sustained fashion to trains of transients. They entrain to click trains up to 400 Hz with vector strength almost equal to one and spike jitter at similar to 100 microseconds. This temporal precision is unmatched by any other cell type in the auditory system. |
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