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Journal Article

Two distinct temporal channels of olfactory bulb output

MPS-Authors
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Fukunaga,  Izumi
Max Planck Research Group Behavioural Neurophysiology (Andreas T. Schaefer), Max Planck Institute for Medical Research, Max Planck Society;

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Berning,  Manuel
Department of Biomedical Optics, Max Planck Institute for Medical Research, Max Planck Society;

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Kollo,  Mihaly
Max Planck Research Group Behavioural Neurophysiology (Andreas T. Schaefer), Max Planck Institute for Medical Research, Max Planck Society;

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Schmaltz,  Anja
Max Planck Research Group Behavioural Neurophysiology (Andreas T. Schaefer), Max Planck Institute for Medical Research, Max Planck Society;

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Schaefer,  Andreas T.
Max Planck Research Group Behavioural Neurophysiology (Andreas T. Schaefer), Max Planck Institute for Medical Research, Max Planck Society;

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http://dx.doi.org/10.1016/j.neuron.2012.05.017
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Citation

Fukunaga, I., Berning, M., Kollo, M., Schmaltz, A., & Schaefer, A. T. (2012). Two distinct temporal channels of olfactory bulb output. Neuron, 75(2), 320-329. doi:10.1016/j.neuron.2012.05.017.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-1293-1
Abstract
Rhythmic neural activity is a hallmark of brain function, used ubiquitously to structure neural information. In mammalian olfaction, repetitive sniffing sets the principal rhythm but little is known about its role in sensory coding. Here, we show that mitral and tufted cells, the two main classes of olfactory bulb projection neurons, tightly lock to this rhythm, but to opposing phases of the sniff cycle. This phase shift is established by local inhibition that selectively delays mitral cell activity. Furthermore, while tufted cell phase is unperturbed in response to purely excitatory odorants, mitral cell phase is advanced in a graded, stimulus−dependent manner. Thus, phase separation by inhibition forms the basis for two distinct channels of olfactory processing