National Centre for Audiology

Hearing Science Laboratory

Research Overview

The Hearing Science Laboratory research focuses on temporal processing in older normal hearing adults and contributes to changes in the assessment of hearing in adults and in the management of their hearing health care. Through better understanding of the effects of the aging ear on hearing, hearing health care to older listeners is being improved.

The Hearing Science Laboratory houses studies focusing on improving understanding of hearing and hearing loss, particularly in the aging population and as it may be affected by environmental noise. This includes studies of the effects of aging on speech perception, growth of masking and other aspects of auditory ability and the relation between speech perception and more basic auditory abilities. The laboratory has developed a number of improved techniques for assessing speech understanding abilities in both hearing impaired clients and normal-hearing subjects. Tests developed in this laboratory include our Adaptive Speech Reception Threshold (ASRT) test and our Distinctive Features Differences (DFD) test, both of which are used in evaluation studies in our ASL, SCL, and elsewhere.

Contact Us

Margaret Cheesman, PhD, is a Co-Project Coordinator at the Hearing Science Laboratory and an Associate Professor in the School of Communication Sciences & Disorders, Faculty of Health Sciences. Her research focuses on hearing during aging and the effects of noise on hearing and communication.

Ewan Macpherson, Ph.D. is a Co-Project Coordinator of the Hearing Science Laboratory, an Assistant Professor in the School of Communications and Disorders, and Faculty Researcher at the National Centre for Audiology, Faculty of Health Sciences. He approaches audiological and psychoacoustic research from the perspective of his training in engineering, physics, and auditory experimental psychology and neurophysiology.