Ortmann, Helene Charlotte (2025) Self-Voice Perception: A Multidimensional Process. Master thesis, Psychology.
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Abstract
The ability to recognize one’s own voice is a unique aspect of auditory perception and essential for understanding altered perceptual experiences, such as auditory hallucinations, where impairments in self-other voice discrimination are frequently observed. However, research on self-other voice discrimination remains limited, particularly regarding the roles of self-other acoustic voice distance, vocal congruence, and emotional valence. This study investigated how these factors influence self-other voice discrimination using a voice categorization task with verbal stimuli. Participants (N = 50) completed a task where they identified along a morphing continuum from other to self-voice whether the voice they heard was “More mine” or “ More other”, while emotional valence (positive, negative, neutral) was manipulated. Results revealed that self-other voice distance and vocal congruence did not significantly predict discrimination accuracy, contradicting hypotheses derived from prior literature. Emotional valence significantly influenced self-other voice discrimination, with emotionally charged words (positive and negative) requiring lower self-voice content to be categorized as “More mine”, suggesting an emotional bias in self-voice discrimination. In addition, negative words, in particular, led to less accurate discrimination compared to neutral and positive words. These findings highlight the role of emotional biases in self-voice recognition and suggest that higher-order cognitive mechanisms, rather than acoustic factors, may play a more prominent role in self-other voice discrimination. The study underscores the need for further research on the neural and cognitive processes underlying self-voice recognition and its clinical and forensic applications.
| Item Type: | Thesis (Master) |
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| Supervisor name: | Sarampalis, A. |
| Degree programme: | Psychology |
| Differentiation route: | Other [Master Psychology] |
| Date Deposited: | 16 Apr 2025 13:46 |
| Last Modified: | 16 Apr 2025 13:46 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/4844 |
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