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Updated: Jun 22, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
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High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

Rachel Hull1, Heather Bortfeld, Susan Koons

  • 1Department of Psychology, Texas A&M University, College Station TX 77843-4235, USA. rhull@tamu.edu

The Open Neuroimaging Journal
|June 24, 2009
PubMed
Summary
This summary is machine-generated.

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Near-infrared spectroscopy (NIRS) offers a flexible, portable, and cost-effective method for measuring brain activity during speech production. This study validates NIRS, showing its effectiveness in tracking cortical activation, particularly in the left temporal region, during overt speech tasks.

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Biomedical Engineering

Background:

  • Traditional neuroimaging methods like fMRI and PET have limitations for studying overt speech production, including motion sensitivity, cost, and portability.
  • These limitations restrict participant numbers, paradigm choices, and study locations in language production research.
  • Near-infrared spectroscopy (NIRS) presents a noninvasive, portable, and more affordable alternative.

Purpose of the Study:

  • To demonstrate the utility of NIRS for measuring cortical activity during overt speech production.
  • To validate NIRS as a viable alternative to fMRI and PET for speech production research.
  • To assess NIRS's robustness to motion artifacts inherent in overt speech tasks.

Main Methods:

  • Utilized near-infrared spectroscopy (NIRS) to measure cortical activity.
Keywords:
Brain mappinglanguagelateralization.speech production

Related Experiment Videos

Last Updated: Jun 22, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

  • Employed a picture-naming task to elicit overt speech production in participants.
  • Compared NIRS findings with existing behavioral and neuroimaging data.

    • Main Results:

    • NIRS data demonstrated robust cortical activation in the left temporal region during overt speech production.
    • No significant activation was observed in the analogous right hemisphere region.
    • NIRS results were consistent with established findings from behavioral and traditional imaging studies.

    Conclusions:

    • NIRS is a valid and flexible methodology for measuring cortical activity during overt speech.
    • NIRS offers a powerful, portable, and cost-effective alternative to traditional neuroimaging techniques for speech production research.
    • This validates NIRS for investigating the neural substrates of speech production, especially when other methods are not feasible.