Gender Event-related Brain Oscillatory Differences in Normal Elderly Population EEG

In most of the scientific publications the data on gender related EEG differences is connected to exploration of disease or abuse-related changes and so takes the gender only as a cofactor. Although no one argues the fact, that gender is one of the greatest factors, influencing EEG results, there is a small number of papers discussing predominantly the gender influence on EEG. That is why the aim of this work is to try to examine the event-related oscillatory differences between a group of male and female individuals being a part of the normal elderly population. We calculated the Event-Related Potentials (ERPs) in time domain, the absolute Fourier power spectrum and S-transform for time-frequency analysis. The reaction times to auditory target stimuli were also calculated and compared. As a result of the present study we found that our female individuals have shown a significantly larger absolute theta and beta1 spectral power compared to male and having a larger N1 and higher P2 event-related potential components. In contrast to these, the male individuals have shown a stronger theta to beta coupling compared to the female individuals.