[Purpose] The purpose of this study was to examine the effects of galvanic vestibular
stimulation on event-related potentials. [Subjects and Methods] Forty normal female adult
subjects were randomly distributed to a galvanic vestibular stimulation application group
(20 subjects) and sham group (20 subjects). For galvanic vestibular stimulation
application, a positive electrode was applied to the right mastoid process, and a negative
electrode was applied to the left mastoid process; simulation was applied for 10 minutes.
A test was conducted on the N100 and P300 components of the event-related potentials
before and after galvanic vestibular stimulation. [Results] The N100 latency showed
statistically significant differences in interaction effects between time and group in the
F3, F4, Fz, and Pz areas. The P300 latency showed the same results in the Fp1 and Fp2
areas, the N100 amplitude showed the same results in the Fp2, Fz, and Pz areas; and the
P300 amplitude showed the same results in the Pz area. [Conclusion] These results suggest
that galvanic vestibular stimulation may play a positive role in the N100 and P300
components of the event-related potentials of the cerebral cortex related to
decision-making in matching words with images.