Lenzi P, Conti A, Arpini A
Audiology. 1978 Mar-Apr;17(2):152-8. doi: 10.3109/00206097809080041.
Late hearing potentials (contigent negative variations; CNV) were studied in 66 subjects of different ages: 15 children, 26 adults and 25 elderly people (extreme ages of 4 and 100 years). Particular care was taken in selection of phonetic material suitable for each age. No CNVs were recorded in children under the age of 5 years; only 2 of the children examined presented late responses for all the phonetic lists. In adults, such cases rose to 5(19.2%), while another 16(61.5%) presented responses for some or a good part of the lists in question. Only in 9 elderly people were typical CNVs observed (36%). The discussion outlines the reasons for the low percentages of late responses obtained in children and point out that in some elderly subject accustomed to psychic and motor activities typical CNV are present.
对66名不同年龄段的受试者进行了晚听电位（伴随负变化；CNV）研究：15名儿童、26名成年人和25名老年人（年龄范围为4岁至100岁）。在选择适合每个年龄段的语音材料时格外小心。5岁以下儿童未记录到CNV；接受检查的儿童中只有2名对所有语音列表都呈现出晚期反应。在成年人中，此类情况增至5例（19.2%），而另外16例（61.5%）对部分或大部分相关列表呈现出反应。仅在9名老年人中观察到典型的CNV（36%）。讨论概述了儿童晚期反应比例较低的原因，并指出在一些习惯精神和运动活动的老年受试者中存在典型的CNV。
