BPG is committed to discovery and dissemination of knowledge
Letter to the Editor
Copyright ©The Author(s) 2026.
World J Psychiatry. Feb 19, 2026; 16(2): 114457
Published online Feb 19, 2026. doi: 10.5498/wjp.v16.i2.114457
Table 1 Identifying key moderators of theta-band transcranial alternating current stimulation efficacy on N-back performance
Moderator variable
Category/relationship
Effect on working memory performance
Stimulation protocolFixed frequency (e.g., 6 Hz)> Personalized frequency
Timing of stimulationOnline (during task)> Offline (before task)
Stimulation durationLonger durationLarger effect size (positive relationship)
Task paradigmN-back> Delayed match-to-sample