Conference Publication Details
Mandatory Fields
Gomez S.;Orsullivan M.;Popovici E.;Mathieson S.;Boylan G.;Temko A.
29th Irish Signals and Systems Conference, ISSC 2018
On sound-based interpretation of neonatal EEG
Optional Fields
amplitude modulation EEG sonification frequency modulation neonatal seizure detection phase vocoder
2018 IEEE. Significant training is required to visually interpret neonatal EEG signals. This study explores alternative sound-based methods for EEG interpretation which are designed to allow for intuitive and quick differentiation between healthy background activity and abnormal activity such as seizures. A novel method based on frequency and amplitude modulation (FM/AM) is presented. The algorithm is tuned to facilitate the audio domain perception of rhythmic activity which is specific to neonatal seizures. The method is compared with the previously developed phase vocoder algorithm for different time compressing factors. A survey is conducted amongst a cohort of non-EEG experts to quantitatively and qualitatively examine the performance of sound-based methods in comparison with the visual interpretation. It is shown that both sonification methods perform similarly well, with a smaller inter-observer variability in comparison with visual. A post-survey analysis of results is performed by examining the sensitivity of the ear to frequency evolution in audio.
Grant Details