Effects of Transcranial Alternating Current Stimulation on Serial Reaction Time Task / 中国康复理论与实践

ABSTRACT

Objective:To investigate the effects of transcranial alternating current stimulation (tACS) on electroencephalography (EEG) rhythm and cognitive function. Methods:In December, 2017, 60 healthy young volunteers were divided into four groups equally, who accepted 20 Hz real or sham tACS on left C3 or right C4. They were asked to complete four types of finger sequence key pressing tasks (left/right hand random/regular key pressing) before and after stimulation, while the EEG signals were collected and the reaction time and accuracy were observed. EEG signals were analyzed with multiple difference analysis of event-related spectral perturbation. Results:The reaction time of contralateral hand reduced after C4 real stimulation. Conclusion:Right 20 Hz tACS can improve the learning of contralateral limb sequential movement.