Spatio-temporal cortical dynamics of phonemic and semantic fluency

Rebecca L. Billingsley, P. G. Simos, E. M. Castillo, S. Sarkari, J. I. Breier, E. Pataraia, Andrew Papanicolaou

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Hemodynamic brain imaging and lesion studies have suggested differential involvement of expressive language-related cortical regions based on the phonemic versus semantic characteristics of verbal cues. The aims of this study were: 1) to elucidate the relative timing of the activity of inferior frontal and anterior insular versus motor and supplementary motor cortex during a fluency task and 2) to assess potential differences in the location or timing of activity in anterior and posterior language areas based on letter versus category cues. Using magnetic source imaging (MSI), we found significantly earlier onset latencies and a greater number of activity sources in motor and supplementary motor compared with inferior frontal and anterior insular regions. We also observed greater left versus right hemispheric asymmetry of activation for letter compared with category cues. This study provides new insights into cortico-cortical interactions during expressive language tasks.

Original languageEnglish (US)
Pages (from-to)1031-1043
Number of pages13
JournalJournal of Clinical and Experimental Neuropsychology
Volume26
Issue number8
DOIs
StatePublished - Nov 1 2004

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Semantics
Cues
Language
Motor Cortex
Neuroimaging
Hemodynamics

All Science Journal Classification (ASJC) codes

  • Clinical Psychology
  • Neurology
  • Clinical Neurology

Cite this

Billingsley, R. L., Simos, P. G., Castillo, E. M., Sarkari, S., Breier, J. I., Pataraia, E., & Papanicolaou, A. (2004). Spatio-temporal cortical dynamics of phonemic and semantic fluency. Journal of Clinical and Experimental Neuropsychology, 26(8), 1031-1043. https://doi.org/10.1080/13803390490515333

Spatio-temporal cortical dynamics of phonemic and semantic fluency. / Billingsley, Rebecca L.; Simos, P. G.; Castillo, E. M.; Sarkari, S.; Breier, J. I.; Pataraia, E.; Papanicolaou, Andrew.

In: Journal of Clinical and Experimental Neuropsychology, Vol. 26, No. 8, 01.11.2004, p. 1031-1043.

Research output: Contribution to journalArticle

Billingsley, RL, Simos, PG, Castillo, EM, Sarkari, S, Breier, JI, Pataraia, E & Papanicolaou, A 2004, 'Spatio-temporal cortical dynamics of phonemic and semantic fluency', Journal of Clinical and Experimental Neuropsychology, vol. 26, no. 8, pp. 1031-1043. https://doi.org/10.1080/13803390490515333
Billingsley RL, Simos PG, Castillo EM, Sarkari S, Breier JI, Pataraia E et al. Spatio-temporal cortical dynamics of phonemic and semantic fluency. Journal of Clinical and Experimental Neuropsychology. 2004 Nov 1;26(8):1031-1043. https://doi.org/10.1080/13803390490515333
Billingsley, Rebecca L. ; Simos, P. G. ; Castillo, E. M. ; Sarkari, S. ; Breier, J. I. ; Pataraia, E. ; Papanicolaou, Andrew. / Spatio-temporal cortical dynamics of phonemic and semantic fluency. In: Journal of Clinical and Experimental Neuropsychology. 2004 ; Vol. 26, No. 8. pp. 1031-1043.
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