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Updated: Sep 20, 2025

Online Transcranial Magnetic Stimulation Protocol for Measuring Cortical Physiology Associated with Response Inhibition
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Precise individual measures of inhibitory control.

Hyejin J Lee1,2,3, Derek M Smith4,5, Clifford E Hauenstein4,6

  • 1Department of Psychology, Florida State University, Tallahassee, FL, USA. leex6248@gmail.com.

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Summary

Precise individual estimates of the congruency effect are achievable with extensive sampling. This study demonstrates that collecting over 5,000 trials enhances understanding of inhibitory control and individual differences.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychiatric Research

Background:

  • Inhibitory control is crucial for daily functioning and implicated in psychiatric disorders.
  • The congruency effect is a common measure of inhibitory control, but its reliability is questionable.
  • Low reliability limits the clinical and basic research applications of the congruency effect.

Purpose of the Study:

  • To determine if precise individual estimates of the congruency effect can be obtained.
  • To investigate the necessary trial numbers for reliable individual difference measurement.
  • To provide a valuable dataset for advancing research on inhibitory control.

Main Methods:

  • Collected over 5,000 trials per participant across four inhibitory control tasks for nine participants.
  • Utilized a combination of existing datasets and computational simulations.
  • Employed advanced statistical modeling to analyze extensive trial data.

Main Results:

  • Achieved precise individual estimates of the congruency effect with high trial counts.
  • Demonstrated that significantly more trials than typically used are required for reliable individual estimates.
  • Showcased the necessity of extensive sampling for revealing true individual differences.

Conclusions:

  • Precise individual estimates of inhibitory control are feasible with sufficient data collection.
  • Current common data collection methods may be insufficient for capturing reliable individual differences in inhibitory control.
  • The shared dataset and findings offer a resource for improving the understanding and measurement of inhibitory control.