Postgraduate research project

Improving understanding of the inner ear using otoacoustic emissions

Funding
Competition funded View fees and funding
Type of degree
Doctor of Philosophy
Entry requirements
2:1 honours degree View full entry requirements
Faculty graduate school
Faculty of Engineering and Physical Sciences
Closing date

About the project

This project aims to test our theories of cochlea processes by measuring sounds generated within the cochlea and comparing the results with theoretical predictions. The cochlea generates low-level sounds (otoacoustic emissions) in response to sound stimulation. Novel stimuli will be used to assess the generation mechanisms.

The human cochlea generates low-level sounds (otoacoustic emissions) that can be detected in the ear canal using a sensitive microphone. When sound is presented to the ear, otoacoustic emissions are generated within the cochlea by the outer hair cells which act as biological electro-mechanical amplifiers. Though we know that the outer hair cells play a key role in hearing, how they work remains poorly understood. 

The aim of the project is to investigate the non-linear relationships between the sound stimulus and the measured emissions, and to compare these with theoretical predictions from existing or novel models. 

Otoacoustic emissions will be measured in human participants using various different novel stimuli (such as maximum length sequences) which enable different aspects of non-linear cochlear mechanics to be assayed. Theoretical predictions of the otoacoustic emissions will be made using different mathematical models implemented in Matlab. The models may be revised to improve their correspondence with measurements.

The School of Engineering is committed to promoting equality, diversity inclusivity as demonstrated by our Athena SWAN award. We welcome all applicants regardless of their gender, ethnicity, disability, sexual orientation or age, and will give full consideration to applicants seeking flexible working patterns and those who have taken a career break. The University has a generous maternity policy, onsite childcare facilities, and offers a range of benefits to help ensure employees’ well-being and work-life balance. The University of Southampton is committed to sustainability and has been awarded the Platinum EcoAward.