Zekveld Adriana A, George Erwin L J, Kramer Sophia E, Goverts S Theo, Houtgast Tammo
EMGO Institute, VU University Medical Center, PO Box 7057, 1007 MB Amsterdam, the Netherlands.
J Speech Lang Hear Res. 2007 Jun;50(3):576-84. doi: 10.1044/1092-4388(2007/040).
In this study, the authors aimed to develop a visual analogue of the widely used Speech Reception Threshold (SRT; R. Plomp & A. M. Mimpen, 1979b) test. The Text Reception Threshold (TRT) test, in which visually presented sentences are masked by a bar pattern, enables the quantification of modality-aspecific variance in speech-in-noise comprehension to obtain more insight into interindividual differences in this ability.
Using an adaptive procedure similar to the SRT test, the TRT test determines the percentage of unmasked text needed to read 50% of sentences correctly. SRTs in stationary noise (SRT(STAT)), modulated noise (SRT(MOD)), and TRTs were determined for 34 participants with normal hearing, aged 19 to 78 years.
The results indicate that about 30% of the variance in SRT(STAT) and SRT(MOD) is shared with variance in TRT, which reflects the shared involvement of a modality-aspecific cognitive or linguistic ability in forming meaningful wholes of fragments of sentences.
The TRT test, a visual analogue of the SRT test, has been developed to measure the variance in speech-in-noise comprehension associated with modality-aspecific cognitive skills. In future research, normative data of the TRT test should be developed. It would also be interesting to measure TRTs of individuals experiencing difficulties understanding speech.
在本研究中，作者旨在开发一种视觉模拟测试，以替代广泛使用的言语接受阈（SRT；R. 普洛姆普和A. M. 明彭，1979b）测试。文本接受阈（TRT）测试中，视觉呈现的句子被条形图案掩盖，该测试能够量化噪声中言语理解中特定模态的方差，从而更深入地了解个体在这种能力上的差异。
使用与SRT测试类似的自适应程序，TRT测试确定正确阅读50%句子所需的未掩盖文本的百分比。对34名年龄在19至78岁之间、听力正常的参与者测定了稳态噪声下的SRT（SRT(STAT)）、调制噪声下的SRT（SRT(MOD)）以及TRT。
结果表明，SRT(STAT)和SRT(MOD)中约30%的方差与TRT中的方差共享，这反映了在形成有意义的句子片段整体时，特定模态的认知或语言能力的共同参与。
TRT测试作为SRT测试的视觉模拟测试，已被开发用于测量与特定模态认知技能相关的噪声中言语理解的方差。在未来的研究中，应建立TRT测试的常模数据。测量言语理解有困难个体的TRT也会很有意思。
