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Cited by 276

The DOI matches its Crossref record; 67 of the 67 references it cites were found in a registry or an index.

The contribution of frequency-specific activity to hierarchical information processing in the human auditory cortex

Open access
Fontolan, L., Morillon, B., Liegeois-Chauvel, C., Giraud, Anne-Lise·2014·Nature Communications
DOI 10.1038/ncomms5694
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Abstract

The fact that feed-forward and top-down propagation of sensory information use distinct frequency bands is an appealing assumption for which evidence remains scarce. Here we obtain human depth recordings from two auditory cortical regions in both hemispheres, while subjects listen to sentences, and show that information travels in each direction using separate frequency channels. Bottom-up and top-down propagation dominates in γ- and δ–β (<40 Hz) bands, respectively. The predominance of low frequencies for top-down information transfer is confirmed by cross-regional frequency coupling, which indicates that the power of γ-activity in A1 is modulated by the phase of δ–β activity sampled from association auditory cortex (AAC). This cross-regional coupling effect is absent in the opposite direction. Finally, we show that information transfer does not proceed continuously but by time windows where bottom-up or top-down processing alternatively dominates. These findings suggest that the brain uses both frequency- and time-division multiplexing to optimize directional information transfer.

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Metadata

Authors
Fontolan, L., Morillon, B., Liegeois-Chauvel, C., & Giraud, A.-L.
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2014-09-02
Volume
5
Issue
1
Pages
4694-4694
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/ncomms5694
OpenAlex
W2017347948
Cited by
276
References
67
FWCI
12.60
Type
journal article
Language
en
Open access
hybrid

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