Fluency tasks generate beta-gamma activity in language-related cortical areas of patients during stereo-EEG monitoring

Chiara Pastori, Stefano Francione, Federica Pelle, Marco de Curtis, Vadym Gnatkovsky

Research output: Contribution to journalArticle

Abstract

A quantitative method was developed to map cortical areas responsive to cognitive tasks during intracerebral stereo-EEG recording sessions in drug-resistant patients candidate for epilepsy surgery. Frequency power changes were evaluated with a computer-assisted analysis in 7 patients during phonemic fluency tasks. All patients were right-handed and were explored with depth electrodes in the dominant frontal lobe. We demonstrate that fluency tasks enhance beta-gamma frequencies and reduce background activities in language network regions of the dominant hemisphere. Non-reproducible changes were observed in other explored brain areas during cognitive tests execution.

Original languageEnglish
Pages (from-to)50-56
Number of pages7
JournalBrain and Language
Volume163
DOIs
Publication statusPublished - Dec 1 2016

Keywords

  • Beta-gamma activity
  • Epilepsy surgery
  • Fluency tasks
  • Intracranial EEG
  • Stereo-EEG

ASJC Scopus subject areas

  • Language and Linguistics
  • Experimental and Cognitive Psychology
  • Linguistics and Language
  • Cognitive Neuroscience
  • Speech and Hearing

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