Evaluation of difference limen for frequency, intensity and duration in individuals with visual impairment

Abstract

Introduction

Individuals with visual impairment are known to have better auditory abilities than individuals with normal vision. There is a literature shortage that has attempted to assess differential sensitivity for frequency, intensity, and duration in individuals with visual impairment.

Objective

Thus, the study attempted to determine differences in difference limen for frequency, intensity, and duration between individuals with visual impairment and individuals with normal vision.

Methods

30 individuals with normal vision and 30 individuals with visual impairment (15 males and 15 females in each) participated in the study, and their DLI, DLF, DLT were assessed using the mlp toolbox.

Results

The study results showed that the differential sensitivity was superior for individuals with visual impairment compared to sighted people.

Conclusions

The results agree with previous studies, suggesting a superior auditory performance in individuals with visual impairment. Further studies on a larger group of population are essential for better generalisation of the results.

Keywords:

• Visual impairment
• difference limen
• frequency
• intensity
• duration

Acknowledgements

The authors acknowledge with gratitude Prof. M Pushpavathi, Director, All India Institute of Speech and Hearing, Mysore for permitting to conduct the study at the institute. The authors also like to acknowledge the participants for their co-operation.

Author contributions

Alka C K was involved in study design, stimulus preparation, data collection, analysis of the data, interpretation and writing the manuscript; Ardra K was involved in study design, data collection, analysis of the results and writing the manuscript; Monam Sinha, was involved in study design, data collection, analysis of the results and writing the manuscript and Prashanth Prabhu, was involved in study design, data collection, analysis of the results and writing the manuscript.

Disclosure statement

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.