Zusammenfassung
Für klinische Zwecke erscheint es angebracht, unter den schnellen akustisch ausgelösten Reizantworten (AER) des Hirnstamms besonderes Augenmerk auf P6 zu lenken. Die Latenz dieser positiven Welle nach ∼ 6 ms zeigt eine feste Beziehung zur Reizlautstärke: ∼ 9,5 ms an der Hörschwelle, ∼ 5,8 ms bei 100 dB CHL (click hearing level). Die verschiedenen Schwerhörigkeitsformen lassen ein jeweils typisches Latenzverhalten erkennen. Die Mittelohr- ist so von der Innenohrschwerhörigkeit zu unterscheiden, und auch unter den sensorischen Schäden bieten diejenigen bis zu mittleren Hörverlusten ein anderes Bild als die mit größeren Höreinbußen. In gleicher Weise lassen sich unter den neuralen Störungen zwei Typen voneinander trennen, wahrscheinlich bedingt durch unterschiedliche Entstehungsformen. Die ERA (electric response audiometry) wird damit zu einem objektiven Pendant der überschwelligen Tests und zu einem integrierten Bestandteil der klinischen Audiometrie.
Summary
For clinical purpose it seems appropriate to emphasize especially P6 among the auditory evoked responses (AER). The latency of this positive wave after ∼ 6 ms shows a close correlation to the sound intensity: ∼ 9.5 ms at the hearing threshold, ∼ 5.8 ms at 100 dB CHL (click hearing level). The different forms of hearing disorders always reveal typical latency patterns. Thus, middle ear hearing loss can be distinguished from inner ear hearing loss, and among sensory lesions those of moderate hearing loss exhibit another pattern than those of severe hearing loss. In the same way among neural disorders two types can be separated from each other, probably caused by different ways of genesis. Thus, ERA (electric response audiometry) becomes an objective pendant to the suprathreshold tests and an integrated part of clinical audiometry.
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Supported by the Deutsche Forschungsgemeinschaft and read in part at the Audiological Meeting, Innsbruck, Austria, April 1981
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Lehnhardt, E. The sound intensity-related behaviour of the brain stem response P6 in different forms of hearing disorders. Arch Otorhinolaryngol 232, 203–213 (1981). https://doi.org/10.1007/BF00457443
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DOI: https://doi.org/10.1007/BF00457443