The study looks into brain activities with EEG (electroencephalography) recording which is a low-risk technique that records the signals generated by the brain. It is non-invasive, participants will wear an EEG recording cap with conductive gels and electrodes during the session. See the NHS page on EEG for more information (https://www.nhs.uk/conditions/electroencephalogram/).

We hope to find how the brain reacts to complex sounds similar to speech, which can help develop a better diagnostic tool for hearing loss that cannot be explained by hearing sensitivities alone.

Participants should be native English speakers born in the UK (as the tests are in UK version), have no history of hearing impairments/disorders including tinnitus, no hearing loss, no neurological disorders or traumatic brain injury, no mental health problems, and are not currently taking psychotropic drugs, sedating medications, or other nerve-acting medications.