Article

Vortrag entfällt: Reverberation effects on behavioral and neural speech tracking in naturalistic two-talker situations (en)

* Presenting author
Day / Time: 21.03.2024, 09:40-10:00
Room: FMS B
Typ: Vortrag (strukturierte Sitzung)
Abstract:

In two-talker situations, listeners need to segregate a stream of interest from a second stream. Our auditory system utilizes several cues to support segregation and intelligibility of the relevant speech stream. As most these cues were investigated using short and anechoic speech, the effects of reverberation on the underlying neural processing in naturalistic listening situations remain unclear. In this study, we presented participants (N=18) with audiobooks of two simultaneous talkers while their neural responses were measured with EEG. Analyses of speech intelligibility and listening difficulty showed main effects of reverberation and azimuth separation. To investigate cortical responses to reverberant, continuous speech, we employed a linear systems approach using multivariate temporal response functions (mTRFs). In line with behavioural results, we found that non-reverberant speech was more strongly represented compared to reverberant speech signals already at early processing stages (80-100ms) suggesting early ‘dereverberation’ in the processing hierarchy. In addition, dry speech was more strongly represented in low vs. high reverberation conditions at a later stage (210ms) indicating stronger linguistic processing potentially because of better speech extraction and segregation. These results and ongoing analyses help to shed more light on neural processes underlying speech perception in naturalistic, reverberant situations.