Schultz-Coulon H J, Borghorst U
HNO. 1982 Mar;30(3):96-100.
Acoustic signals of low frequencies can be percepted by the tactile sense as vibrations to a limited extent. In educating deaf children one takes trouble to combine tactile and visual speech perception in order to improve speech discrimination. The question of this study was, whether an improvement of tactile discrimination can be achieved even by patients with late aquired deafness. In a 45 years old female patient who had become deaf after adolescence the tactile discrimination of instrumental sounds (electric organ) within the frequency area c3-c4 (131-262 cps) as well as of speech sounds (30 mono- and multisyllabic words) was trained by means of the SIEMENS-Fonator. After two training courses of ten hours each (à 45 min) the patient was not only able to recognize pitch differences of two half steps and more as well as the tones of the scale with few errors only, but could also identify the words to a high percentage; in monosyllables she reached an identification rate of 75.6% and in words with 3 syllables of 85%. Additionally, a marked improvement of speech discrimination by lip reading was observed when using the Fonator. Accordingly, even in patients with late aquired deafness it appears to be worthwhile to train the tactile discrimination of vibration stimuli as to support lip reading.
低频声信号在一定程度上可通过触觉感知为振动。在对失聪儿童进行教育时，人们会努力将触觉和视觉言语感知结合起来，以提高言语辨别能力。本研究的问题是，即使是后天失聪的患者，是否也能实现触觉辨别能力的提高。在一名45岁的女性患者身上进行了研究，该患者青春期后失聪，通过西门子发声器对其在c3 - c4频率范围（131 - 262赫兹）内对乐器声音（电子琴）以及语音（30个单音节和多音节单词）的触觉辨别能力进行训练。在进行了两个各十小时（每次45分钟）的训练课程后，该患者不仅能够识别出两个半音及以上的音高差异，并且对音阶中的音调识别错误极少，而且还能以较高比例识别单词；在单音节词中，她的识别率达到75.6%，在三音节词中达到85%。此外，使用发声器时，通过唇读观察到言语辨别能力有显著提高。因此，即使对于后天失聪的患者，训练对振动刺激的触觉辨别能力以辅助唇读似乎也是值得的。
