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Related Experiment Video

Updated: Feb 5, 2026

Transcranial Direct Current Stimulation tDCS of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition

Transcranial Direct Current Stimulation tDCS of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition

Published on: July 13, 2019

Modulating inhibitory control in test-anxious individuals via tDCS: An ERP study.

Peibing Liu¹, Zhaonian Hu¹, Renlai Zhou²

¹Department of Psychology, Nanjing University, Nanjing, China.

Journal of Psychiatric Research

|February 3, 2026

Summary

Transcranial direct current stimulation (tDCS) may improve inhibitory control in high test anxiety individuals. Active tDCS targeting the left dorsolateral prefrontal cortex reduced P3 amplitude, suggesting a potential non-invasive intervention.

Keywords:

Event-related potentials Inhibitory control Left dorsolateral prefrontal cortex Test anxiety Transcranial direct current stimulation

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Area of Science:

Neuroscience
Cognitive Psychology
Psychophysiology

Background:

Test anxiety is a prevalent issue impacting academic achievement.
Understanding the neural underpinnings of inhibitory control in test anxiety is crucial.
Non-invasive brain stimulation offers a potential avenue for intervention.

Purpose of the Study:

To investigate the effects of transcranial direct current stimulation (tDCS) on neural inhibitory control efficiency in individuals with high test anxiety.
To explore the underlying neural mechanisms of tDCS in modulating test anxiety.
To identify the left dorsolateral prefrontal cortex (DLPFC) as a potential neural target for tDCS interventions.

Main Methods:

Recruited 42 participants with high or low test anxiety.
Administered active (anodal) and sham tDCS targeting the left DLPFC.
Recorded event-related potentials (ERPs) during a Flanker task to assess inhibitory control.

Main Results:

Active tDCS significantly reduced P3 component amplitude in the high test anxiety group compared to sham.
No significant effect of active tDCS was observed in the low test anxiety group.
The P3 component is associated with attentional allocation during inhibitory control tasks.

Conclusions:

tDCS modulates neural inhibitory control in individuals with high test anxiety by activating the left DLPFC.
This study provides electrophysiological evidence supporting non-invasive neuromodulation as a potential intervention strategy.
The left DLPFC is identified as a promising neural target for tDCS in managing test anxiety.