How the ear works:

1. The Pinna concentrates soundwaves into the ear canal, impacting on the eardrum.
2. These soundwaves cause the eardrum and the three small bones in the middle ear to vibrate.
3. The vibrations ripple through the fluid in the Cochlea. The vibrations are converted into electrical signals by the hair cells of the Organ of Corti.
4. These electrical signals travel up the auditory pathway to the auditory cortex where they are recognised as sounds.