Correlation between temporal response of fMRI and fast reaction time in a language task

Ho Ling Liu, Wan Ting Liao, Shin Yi Fang, Tieh Chi Chu, Li Hai Tan

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Correlation between behavioral parameters and fMRI responses can provide an advanced understanding of the neuronal processes. A lexical decision task was employed to examine the correlation between the reaction time (RT) and the temporal parameters in event-related BOLD responses. Word frequency was manipulated in the experiment. RTs for high-frequency, low-frequency and pseudowords were measured during fMRI (417 ± 9 ms, 631 ± 22 ms and 658 ± 15 ms, respectively). For high-frequency words, RTs were significantly shorter than that for low-frequency and pseudowords (p < 0.0005). In the left inferior frontal region, the FWHM of the fMRI responses was significantly correlated with RT (p < 0.001), which may correspond to areas with sustained activation during the whole processing.

Original languageEnglish (US)
Pages (from-to)451-455
Number of pages5
JournalMagnetic Resonance Imaging
Volume22
Issue number4
DOIs
StatePublished - May 2004
Externally publishedYes

Keywords

  • Brain
  • Hemodynamic response
  • Lexical decision
  • Reaction time
  • fMRI

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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