Phonagnosia: A Voice Homologue to Prosopagnosia NEUR-494 Honors Thesis
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چکیده
A 20-year old female, AN, was markedly poorer than controls (a number of whom were perfect) at identifying her most familiar celebrity voices. AN shows no evidence of brain damage or lesions, no deficit in voice and non-voice sound discrimination tasks, no deficit in face recognition, a clear imagination of non-voice sounds. AN and two additional phonagnosics were inability to imagine the voices of familiar celebrities. In order to solve the difficult problem of comparing a single subject to a sample of controls, I developed a bootstrap analysis that was crucial in isolating a region in the ventromedial prefrontal cortex (vmPFC) that was activated in controls, but not by AN, when imagining familiar celebrity voices. Rather than a deficit in the representation of prosody, AN may be unable to associate the prosody of a voice to the identity of a familiar person over the long term. In this respect, the deficit in developmental phonagnosia may bear a striking parallel to developmental prosopagnosia. Sarah Herald Honors Thesis: Developmental Phonagnosia 3
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تاریخ انتشار 2016