Axonal site of spike initiation enhances auditory coincidence detection

Hiroshi Kuba, Takahiro M. Ishii and Harunori Ohmori ()
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Hiroshi Kuba: Kyoto University
Takahiro M. Ishii: Kyoto University
Harunori Ohmori: Kyoto University

Nature, 2006, vol. 444, issue 7122, 1069-1072

Abstract: Tuning the nerves Different neurons initiate their action potentials (or spikes) at different points down their axons, but the functional implications of this have been unclear. Kuba et al. focus on nerve cells in a bird's auditory system: the nucleus laminaris is a binaural coincidence detector, and is a good model for examining this phenomenon. They find that neurons that initiate spikes closer to the cell body (or soma) are tuned to sounds with lower frequencies. Computer modelling suggests that spike initiation sites may be key to coincidence detection by other neurons as well.

Date: 2006
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DOI: 10.1038/nature05347

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