Speech comprehension assessed by electroencephalography: A new method using m-sequence modulation

Hiroshige Takeichi, Sachiko Koyama, Ayumu Matani, Andrzej Cichocki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Electroencephalograms (EEGs) were recorded from eight Japanese speakers while they listened to Japanese and Spanish sentences (approximately 51 s each). The sentences were modulated in amplitude by a binary m-sequence and played forward or backward. A circular cross-correlation function was computed between the EEG signals and the m-sequence and averaged across subjects. Independent component analysis of the averaged function revealed a component source response which was obtained only for the comprehensible Japanese and not for the incomprehensible sentences. The present study has thus shown that a 1-min long EEG signal is sufficient for the assessment of speech comprehension.

Original languageEnglish
Pages (from-to)314-318
Number of pages5
JournalNeuroscience Research
Volume57
Issue number2
DOIs
Publication statusPublished - Feb 2007
Externally publishedYes

Keywords

  • Cross-correlation function
  • Event-related brain potential
  • ICALAB
  • Independent component analysis
  • Japanese
  • N400
  • Natural continuous speech

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