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- W4386157365 abstract "To examine the audiological characteristics and neuroanatomical regions associated with auditory phonological identification impairment in primary progressive aphasia (PPA). Twenty-seven patients with PPA (13 non-fluent/agrammatic variant PPA [nfvPPA], three logopenic variant PPA [lvPPA], seven semantic variant PPA [svPPA], and four mixed type PPA) were included in the study. Neuropsychological, language, audiological, and neuroradiological examinations were also performed. Auditory function examinations consisted of a pure-tone threshold test, a phonological identification task, and temporal auditory acuity tests, such as click counting or fusion. As an evaluation value of phonological identification ability, we calculated the discrepancy scores, which were the smaller discrepancy (left or right ear) in phonological identification ability scores between measured and expected values from the pure-tone threshold. In the neuroradiological examination, we evaluated the regional cerebral blood flow using 123I-iodoamphetamine single-photon emission computed tomography. Eight of the 27 patients were allocated to the impaired phonological identification group, and four were considered to have significant impairment on further analysis. Two of these patients, one with lvPPA and one with mixed type of lvPPA and nfvPPA, showed apparent phonological identification deficits that could be observed in daily life. The discrepancy scores were not significantly related to the results of neuropsychological, language, or any other auditory examinations, except for the click counting score in the left ear. Voxel-based correlation analyses revealed that regional cerebral blood flow in the bilateral superior temporal gyrus and bilateral primary auditory cortex was significantly and positively correlated with phonological identification ability. Our results suggest that progressive dysfunction of the bilateral superior temporal gyrus and bilateral primary auditory cortex due to neurodegenerative diseases leads to phonological identification impairment in PPA syndrome." @default.
- W4386157365 created "2023-08-26" @default.
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- W4386157365 date "2023-11-01" @default.
- W4386157365 modified "2023-09-25" @default.
- W4386157365 title "Auditory phonological identification impairment in primary progressive aphasia" @default.
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- W4386157365 doi "https://doi.org/10.1016/j.cortex.2023.08.007" @default.
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