Integrated study of topographical functional maps based on an auditory comprehension paradigm using an eigensystem study and spectrum analysis

Mercedes Cabrerizo, Malek Adjouadi, Melvin Ayala, Ilker Yaylali, Prasanna Jayakar, Gustavo Rey

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study integrates a spectral analysis of key frequency bands (Alpha, Beta, Delta, and Theta) with an eigensystem-based study in order to validate brain functional mappings associated with the characterization effects of an Auditory/Comprehension paradigm. This numerical characterization supported by topographic functional maps brings added insight in the involvement of the Wernicke and Broca's brain areas to language comprehension. A thorough examination of EEG recordings through the eigensystem reveals that eigenvectors associated with the largest eigenvalues produce an interesting activity pattern located in the frontal area of the brain directly attributable to those characteristic behaviors found in the Alpha, Beta, Delta, and Theta frequency bands. An evaluation of spectral arrays is performed using topographic maps of the induced brain activities during both listening and answering phases. This evaluation is then augmented with quantifying measures using the eigensystem study while results are validated through integration of EEG activity and eigensystem modalities. Such a representation can provide insightful information on how different patients react during an auditory and response phases, and in the ability to detect the presence of potential neurological disorders by assessing similar/dissimilar behaviors with respects to all former patients already included in the database. The algorithm as developed in this study could be extended in its application to other brain functional mapping tasks given its simple but effective practical mathematical foundation.

Original languageEnglish (US)
Pages (from-to)151-163
Number of pages13
JournalBrain Topography
Volume17
Issue number3
DOIs
StatePublished - Mar 2005

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Brain Mapping
Spectrum Analysis
Electroencephalography
Brain
Aptitude
Nervous System Diseases
Language
Databases
Broca Area

Keywords

  • Auditory/comprehension test
  • Brain functional mappings
  • EEG data
  • Principal component transform
  • Spectral arrays

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Integrated study of topographical functional maps based on an auditory comprehension paradigm using an eigensystem study and spectrum analysis. / Cabrerizo, Mercedes; Adjouadi, Malek; Ayala, Melvin; Yaylali, Ilker; Jayakar, Prasanna; Rey, Gustavo.

In: Brain Topography, Vol. 17, No. 3, 03.2005, p. 151-163.

Research output: Contribution to journalArticle

Cabrerizo, Mercedes ; Adjouadi, Malek ; Ayala, Melvin ; Yaylali, Ilker ; Jayakar, Prasanna ; Rey, Gustavo. / Integrated study of topographical functional maps based on an auditory comprehension paradigm using an eigensystem study and spectrum analysis. In: Brain Topography. 2005 ; Vol. 17, No. 3. pp. 151-163.
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