When a small muscle in the ear (called the tensor tympani) contracts, you may hear a dull rumbling sound. This is known as 'ear rumbling'. Some people can voluntarily ear rumble by purposefully contracting their tensor tympani on-demand. This movement can be detected using a small camera inserted in the ear canal, which can then be used for interacting with devices as an input switch or 'ear click'.
We are looking to recruit participants aged 18+ who can voluntarily contract the tensor tympani muscle in their ear (are able to 'ear rumble').