Dept of Speech and Hearing Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India.
Dept of Speech and Hearing Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India.
Int J Pediatr Otorhinolaryngol. 2021 May;144:110697. doi: 10.1016/j.ijporl.2021.110697. Epub 2021 Mar 27.
Dichotic listening is an experimental paradigm where two different stimuli are presented to the right and left ear simultaneously. Currently, there are no clinically validated full version (Forced recall condition) of dichotic word test in Indian language with established normative. Hence the study involves the development of a MATLAB based Dichotic listening test in Indian English including free recall and forced recall conditions.
This study was carried out in two phases. Phase 1 involved development and validation of an automated dichotic listening test using MATLAB software. Phase 2 involved data collection and constructing a normative data on 70 healthy adults (18-50 yrs) and 70 children (10-15 yrs) also establishing test retest reliability on 25 participants for the newly developed test.
Right ear advantage was observed for free recall condition similar to that of classical dichotic effect. Also, there was no significant difference between the right and left ear scores in the two forced recall condition. The test showed moderate to good test-retest reliability for both the conditions.
The results showed ideal retention of original dichotic effects for both free recall and forced recall conditions and hence can be used in clinical set to tests disordered population like Central auditory population disorder and Learning disability.
双耳分听是一种实验范式，其中同时向左右耳呈现两个不同的刺激。目前，在印度语中，还没有经过临床验证的全版本（强制回忆条件）的双耳分听测试，也没有建立既定的规范。因此，本研究涉及开发一种基于 MATLAB 的印度英语双耳分听测试，包括自由回忆和强制回忆条件。
本研究分为两个阶段进行。第一阶段涉及使用 MATLAB 软件开发和验证自动双耳分听测试。第二阶段涉及在 70 名健康成年人（18-50 岁）和 70 名儿童（10-15 岁）中收集数据并构建规范数据，并对新开发的测试对 25 名参与者进行测试重测信度。
自由回忆条件下观察到右耳优势，类似于经典的双耳分听效应。此外，在两种强制回忆条件下，左右耳得分之间没有显著差异。两种条件下的测试均显示出中等至良好的重测信度。
结果表明，两种条件下的自由回忆和强制回忆都理想地保留了原始的双耳分听效应，因此可以在临床环境中用于测试有听力障碍的人群，如中枢听觉障碍和学习障碍。
