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Octopus Cells in the Posteroventral Cochlear Nucleus Provide the Main Excitatory Input to the Superior Paraolivary Nucleus

Overview of attention for article published in Frontiers in Neural Circuits, May 2017
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Title
Octopus Cells in the Posteroventral Cochlear Nucleus Provide the Main Excitatory Input to the Superior Paraolivary Nucleus
Published in
Frontiers in Neural Circuits, May 2017
DOI 10.3389/fncir.2017.00037
Pubmed ID
Authors

Richard A. Felix, Boris Gourévitch, Marcelo Gómez-Álvarez, Sara C. M. Leijon, Enrique Saldaña, Anna K. Magnusson

Abstract

Auditory streaming enables perception and interpretation of complex acoustic environments that contain competing sound sources. At early stages of central processing, sounds are segregated into separate streams representing attributes that later merge into acoustic objects. Streaming of temporal cues is critical for perceiving vocal communication, such as human speech, but our understanding of circuits that underlie this process is lacking, particularly at subcortical levels. The superior paraolivary nucleus (SPON), a prominent group of inhibitory neurons in the mammalian brainstem, has been implicated in processing temporal information needed for the segmentation of ongoing complex sounds into discrete events. The SPON requires temporally precise and robust excitatory input(s) to convey information about the steep rise in sound amplitude that marks the onset of voiced sound elements. Unfortunately, the sources of excitation to the SPON and the impact of these inputs on the behavior of SPON neurons have yet to be resolved. Using anatomical tract tracing and immunohistochemistry, we identified octopus cells in the contralateral cochlear nucleus (CN) as the primary source of excitatory input to the SPON. Cluster analysis of miniature excitatory events also indicated that the majority of SPON neurons receive one type of excitatory input. Precise octopus cell-driven onset spiking coupled with transient offset spiking make SPON responses well-suited to signal transitions in sound energy contained in vocalizations. Targets of octopus cell projections, including the SPON, are strongly implicated in the processing of temporal sound features, which suggests a common pathway that conveys information critical for perception of complex natural sounds.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 41 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 41 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 8 20%
Student > Ph. D. Student 7 17%
Other 4 10%
Professor 3 7%
Student > Master 3 7%
Other 7 17%
Unknown 9 22%
Readers by discipline Count As %
Neuroscience 14 34%
Agricultural and Biological Sciences 6 15%
Engineering 3 7%
Biochemistry, Genetics and Molecular Biology 2 5%
Chemistry 2 5%
Other 2 5%
Unknown 12 29%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 11 June 2017.
All research outputs
#20,365,559
of 22,914,829 outputs
Outputs from Frontiers in Neural Circuits
#1,034
of 1,220 outputs
Outputs of similar age
#274,956
of 315,942 outputs
Outputs of similar age from Frontiers in Neural Circuits
#23
of 23 outputs
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