This study uses the electroencephalogram (EEG) and synchronous “alpha” activity over the parietal lobe of the brain to assess listening effort. The researchers find that the intelligibility advantages offered by Signia Augmented Focus hearing aids lead to less effortful listening across a range of SNRs typical of difficult listening environments.
Research findings are presented for the Signia AX platform, with its introduction of a new signal processing paradigm called Augmented Focus, which splits the incoming sounds into two separate signal streams. The activation of Augmented Focus showed a significant benefit for speech recognition in background noise, and when compared to leading competitors, a significant advantage also was observed. Additionally, when combined with the Signia AX binaural beamformer, speech recognition for the participants with hearing loss was significantly better than for their normal-hearing counterparts.