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Illusory Conjunctions in Speech Perception as a Lens into the Characteristics of Hearing Loss

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Document pages: 16 pages

Abstract: This study explores the formation of a complex illusory conjunction in simulated speech perception that has yet to see a parallel in visual cognition. The illusory conjunction dealt with in this paper is confounded by 2 disparate spatial modalities – a) spatialization of competing formant features across high and low frequency bands on one hand and b) high-level expectation of speech content competing with the low level processing of auditory objects (such as speechmodulated noise). This paper has extended on a previous initial study around this topic, by controlling for the illusory conjunctions in one of the spatial dimensions (formant space) to then account for specific individual differences as possible correlations with individual hearing abilities across the audible frequency range. The results are an encouraging direction towards a better understanding of audition through the controlled perception of illusory conjunctions.

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