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  Role of the zebra finch auditory thalamus in generating complex representations for natural sounds

Amin, N., Gill, P., & Theunissen, F. E. (2010). Role of the zebra finch auditory thalamus in generating complex representations for natural sounds. Journal of Neurophysiology, 104(2), 784-798. doi:10.1152/jn.00128.2010.

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 Creators:
Amin, N., Author
Gill, P., Author
Theunissen, Frederic E.1, Author           
Affiliations:
1University Berkeley, USA, ou_persistent22              

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Free keywords: Acoustic Stimulation/methods Action Potentials/physiology Animals Auditory Pathways/*physiology Finches/anatomy & histology/*physiology Fourier Analysis Male Models, Biological Neurons/*physiology Reaction Time/physiology *Sound Thalamus/cytology/*physiology
 Abstract: We estimated the spectrotemporal receptive fields of neurons in the songbird auditory thalamus, nucleus ovoidalis, and compared the neural representation of complex sounds in the auditory thalamus to those found in the upstream auditory midbrain nucleus, mesencephalicus lateralis dorsalis (MLd), and the downstream auditory pallial region, field L. Our data refute the idea that the primary sensory thalamus acts as a simple, relay nucleus: we find that the auditory thalamic receptive fields obtained in response to song are more complex than the ones found in the midbrain. Moreover, we find that linear tuning diversity and complexity in ovoidalis (Ov) are closer to those found in field L than in MLd. We also find prevalent tuning to intermediate spectral and temporal modulations, a feature that is unique to Ov. Thus even a feed-forward model of the sensory processing chain, where neural responses in the sensory thalamus reveals intermediate response properties between those in the sensory periphery and those in the primary sensory cortex, is inadequate in describing the tuning found in Ov. Based on these results, we believe that the auditory thalamic circuitry plays an important role in generating novel complex representations for specific features found in natural sounds.

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Language(s): eng - English
 Dates: 2010
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: 20554842
DOI: 10.1152/jn.00128.2010
 Degree: -

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Title: Journal of Neurophysiology
  Other : J. Neurophysiol.
Source Genre: Journal
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Publ. Info: Bethesda, MD : The Society
Pages: - Volume / Issue: 104 (2) Sequence Number: - Start / End Page: 784 - 798 Identifier: ISSN: 0022-3077
CoNE: https://pure.mpg.de/cone/journals/resource/954925416959