“脑裂”患者的听力学表现。

F E Musiek, D H Wilson, M L Pinheiro
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摘要

传统的外周听力测试(纯音阈值、语音接收阈值和语音辨别)和选定的“中央”听力测试对三名合并分组的患者进行。一名患者在术前和术后都进行了检测,而其余两名患者仅在术后进行了检测。结果表明,合骨切开术对外周测试的性能没有明显影响。然而,中央电池的各种测试都显示出明显的异常结果。最显著的结果来自二分呈现的言语刺激,反复显示对左耳的刺激完全没有反应。另外的实验表明,这种单耳缺陷可以通过减少右耳刺激的强度来克服。低冗余、单一呈现的语音刺激也显示了左耳缺陷;然而,这些结果并不像二元数据那样一致。
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Audiological manifestations in "split brain" patients.

Traditional peripheral hearing tests (pure-tone thresholds, speech reception thresholds, and speech discrimination) and selected "central" hearing tests were administered to three commissurotomized patients. One patient was tested both pre-and postoperatively, whereas the remaining two were tested only postsurgery. Results indicated that commissurotomy had no apparent effects on performance on the peripheral tests. However, various tests in the central battery showed definite abnormal results. Most significant were the results from dichotically presented speech stimuli which repeatedly showed total absence of responses for stimuli presented to the left ear. Additional experimentation indicated this monaural deficit could be overcome by reducing the intensity level of right ear stimuli. Results for low-redundancy, monotically presented speech stimuli also indicated a left ear deficit; however, these results were not as consistent as the dichotic data.

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On stringent procedures and scientific methodology in the audiometric clinic. Influence of high pass filtering on the intelligibility of amplitude-compressed speech. A discussion of some temporal characteristics of electroacoustic impedance bridges. A comparison of the effect on consonant discrimination of combining low- and high-frequency passbands in normal, congenital, and adventitious hearing-impaired subjects. An atlas of microscopic dissection following the attic approach to the cat's middle ear.
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