Riedel K, Studdert-Kennedy M
Brain Lang. 1985 Mar;24(2):223-32. doi: 10.1016/0093-934x(85)90132-4.
Synthetic speech stimuli were used to investigate whether aphasics' ability to perceive stop consonant place of articulation was enhanced by the extension of initial formant transitions in CV syllables. Phoneme identification and discrimination tests were administered to 12 aphasic patients, 5 fluent and 7 nonfluent. There were no significant differences in performance due to the extended transitions, and no systematic pattern of performance due to aphasia type. In both groups, discrimination was generally high and significantly better than identification, demonstrating that auditory capacity was retained, while phonetic perception was impaired; this result is consistent with repeated demonstrations that auditory and phonetic processes may be dissociated in normal listeners. Moreover, significant rank order correlations between performances on the Token Test and on both perceptual tasks suggest that impairment on these tests may reflect a general cognitive rather than a language-specific deficit.
使用合成语音刺激来研究通过延长CV音节中的初始共振峰过渡，失语症患者感知塞音发音部位的能力是否会得到增强。对12名失语症患者进行了音素识别和辨别测试，其中5名是流畅型失语症患者，7名是非流畅型失语症患者。延长过渡并没有导致表现上的显著差异，也没有因失语症类型而产生的系统性表现模式。在两组中，辨别能力总体上较高，且明显优于识别能力，这表明听觉能力得以保留，而语音感知受损；这一结果与反复证明的在正常听众中听觉和语音过程可能分离的情况一致。此外，在代币测试和两项感知任务中的表现之间存在显著的等级顺序相关性，这表明这些测试中的损伤可能反映的是一般认知缺陷，而非特定于语言的缺陷。
