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The "other-voice" effect : how speaker identity and language familiarity influence the way we process emotional speech

Abstract : The human voice is a powerful tool to convey emotions. Humans hear voices on a daily basis and are able to rapidly extract relevant information to successfully interact with others. The theoretical aim of this thesis is to investigate the role of familiarity on emotional voice processing. Chapters 2 and 3 present behavioral and electrophysiological studies investigating how self- versus non self-produced voices influence the processing of emotional speech utterances. By contrasting self and other, familiarity is here assessed at a personal level. The results of Chapter 2 show a dissociation of explicit and implicit processing of the self-voice. While explicit discrimination of an emotional self-voice and other-voice was somewhat impaired, implicit self-processing prompted a self-advantage in emotion recognition and speaker discrimination. Chapter 3 reports a prioritization for the non-self voice in the processing of emotional and low-level acoustic changes, reflected in faster electrophysiological (EEG) and behavioral responses. In Chapter 4, the effect of voice familiarity on is assessed at a larger sociocultural scale by comparing speech utterances in the native and a foreign language. Taken together, this thesis highlights some ways in which the ‘otherness’ of a voice - whether a non-self speaker or a foreign language speaker - is processed with a higher priority on the one hand, but with less acoustic precision on the other hand.
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Laura Rachman. The "other-voice" effect : how speaker identity and language familiarity influence the way we process emotional speech. Neurons and Cognition [q-bio.NC]. Sorbonne Université, 2018. English. ⟨NNT : 2018SORUS280⟩. ⟨tel-02868555⟩

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