Frequency Variation in EEG as an Effect of Binaural Stimuli During Class English Learning

The frequency variation recorded in the cerebral cortex due to binaural stimulation in an English learning process as a foreign language (L2) has been considered a tool to facilitate learning through frequency shifting. This study aimed to evaluate this variation by analyzing EEG signals from 17 healthy subjects during an L2 learning process without stimulation and under three binaural stimulations at 9 and 18 Hz. Specifically, we transformed the signals to the frequency domain and segmented the total time of a class into time intervals of Δt=20 s, calculating the maximum frequency and amplitude per interval. The EEG recording under stimulation showed significant frequency variation, mainly under 9 Hz sonata and 9 Hz tone binaural stimulation. The frequency shift from the beta to the alpha band was primarily achieved with the 9 Hz tone stimulation. The amplitude of the maximum recorded frequency decreased with almost all stimulations. These findings provide evidence for selective modulation of brain activity to different auditory stimuli, such as the frontal and occipital cortex, in attention and visual processing during L2 learning. This work significantly contributes to a deeper understanding of the mechanisms underlying binaural stimulation in cognitive learning, potentially revolutionizing our approach to education and cognitive enhancement.