Journal
JOURNAL OF NEUROSCIENCE
Volume 32, Issue 19, Pages 6421-6434Publisher
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.4363-11.2012
Keywords
-
Categories
Funding
- Agence Nationale de la Recherche
- CONTINT
- ANR blanc
- Fondation Fyssen
- Grenoble Neurological Hospital epilepsy unit
- Dominique Hoffmann
- Patricia Boschetti
- Carole Chatelard
- Veronique Dorlin
Ask authors/readers for more resources
Reading sentences involves a distributed network of brain regions acting in concert surrounding the left sylvian fissure. The mechanisms of neural communication underlying the extraction and integration of verbal information across subcomponents of this reading network are still largely unknown. We recorded intracranial EEG activity in 12 epileptic human patients performing natural sentence reading and analyzed long-range corticocortical interactions between local neural activations. During a simple task contrasting semantic, phonological, and purely visual processes, we found process-specific neural activity elicited at the single-trial level, characterized by energy increases in a broad gamma band (40-150 Hz). Correlation analysis between task-induced gamma-band activations revealed a selective fragmentation of the network into specialized subnetworks supporting sentence-level semantic analysis and phonological processing. We extend the implications of our results beyond reading, to propose that gamma-band amplitude correlations might constitute a fundamental mechanism for large-scale neural integration during high-level cognition.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available