PubMed · 3838622
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K I Berliner, W M Luxford, W F House. 1985. Cochlear implants: 1981 to 1985.. https://pubmed.ncbi.nlm.nih.gov/3838622/
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The response task employed in visual reinforcement audiometry (VRA) has been characterized both as a localization response and, alternatively, as a pure operant conditioning behavior independent of localization. This study examined the role of localization in VRA conditioning and threshold procedures by varying the localization information provided to normal infants. Results indicate (a) that the VRA response is not contingent on localization but (b) that performance may be significantly influenced by localization. The findings suggest that any variable that alters proper localization cues, including equipment arrangement or impaired auditory function, may degrade response performance.
We have all noticed that there was no coincidence between the conventional audiometric tests--tonal, vocal, Metz tests--and the degree of impairment of understandability in noisy environments that the patients report. Some of them handle this problem better than these conventional tests suggest, others less well. The aim of this study is to take account of this dominating functional complaint: impairment in noisy conditions, and to assess it in order to follow up its evolution after medical, surgical and prosthetic treatments. The aim of the authors has been to describe an easy examination to be implemented in any ENT surgery fitted with a free-field vocal testing equipment. The results show that this test cas differentiate between "noise-resistant" subjects and those that do not "resist" well. The discussion defines the limitations of this test, which are due to its deliberate simplicity, and the caution required for its psychoacoustic and physiological interpretation. The conclusion confirms its merits, since it can discriminate and help choose more accurate tests--temporal tests, frequency selectiveness charts, twin-ear tests, cognitive AEP.
Whereas tonal audiometry makes it possible to analyze the elementary deficits of hearing, vocal audiometry enables an overall synthetic assessment of these deficits. The vocal material usually used is composed of lists of sentences, words, logatomes or even phonemes. The authors suggest resorting to lists of phonetically balanced phonatomes or diphonemes. Among the advantages this technique offers, are the rapidity of the test, the excellent representativity of the most informative acoustic components of speech and the elimination of the extralinguistic factors of speech recognition.