Park, Jonghwa Jeonglok Baek, Seung-Cheol Suh, Myung-Whan Choi, Jongsuk Kim, Sung June Lim, Yoonseob 2024-01-19T09:31:40Z 2024-01-19T09:31:40Z 2023-06-01 2023-06 0378-5955 https://pubs.kist.re.kr/handle/201004/113691 Selective auditory attention has been shown to modulate the cortical representation of speech. This effect has been well documented in acoustically more challenging environments. However, the influence of top-down factors, in particular topic familiarity, on this process remains unclear, despite evidence that seman-tic information can promote speech-in-noise perception. Apart from individual features forming a static listening condition, dynamic and irregular changes of auditory scenes-volatile listening environments- have been less studied. To address these gaps, we explored the influence of topic familiarity and volatile listening on the selective auditory attention process during dichotic listening using electroencephalogra-phy. When stories with unfamiliar topics were presented, participants' comprehension was severely de-graded. However, their cortical activity selectively tracked the speech of the target story well. This implies that topic familiarity hardly influences the speech tracking neural index, possibly when the bottom-up information is sufficient. However, when the listening environment was volatile and the listeners had to re-engage in new speech whenever auditory scenes altered, the neural correlates of the attended speech were degraded. In particular, the cortical response to the attended speech and the spatial asymmetry of the response to the left and right attention were significantly attenuated around 10 0-20 0 ms after the speech onset. These findings suggest that volatile listening environments could adversely affect the mod-ulation effect of selective attention, possibly by hampering proper attention due to increased perceptual load.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ ) English Elsevier BV The effect of topic familiarity and volatility of auditory scene on selective auditory attention Article 10.1016/j.heares.2023.108770 1 Hearing Research, v.433 Hearing Research 433 Y scie scopus 000988608800001 2-s2.0-85153294877 Audiology & Speech-Language Pathology Neurosciences Otorhinolaryngology Audiology & Speech-Language Pathology Neurosciences & Neurology Otorhinolaryngology Article COCKTAIL PARTY CORTICAL REPRESENTATION CONTINUOUS SPEECH ATTENDED SPEECH PUPIL RESPONSE ENTRAINMENT INTELLIGIBILITY NOISE CONTINUITY TRACKING Selective auditory attention Topic familiarity Listening volatility Electroencephalography(EEG) Neural decoding Auditory attention detection(AAD)