Ringing in the ears
Category B - full version without watermark 720x576 (check terms and conditions at www.teledesign.de) The version with watermark is for free to embed. Tinnitus can be perceived in one or both ears or in the head. It is usually described as a ringing noise. The inner ear contains thousands of minute hairs, called stereocilia, which vibrate in response to sound waves and cells which convert neural signals back into acoustical vibrations. The sensing cells are connected with the vibratory cells through a neural feedback loop, whose gain is regulated by the brain. Listening to loud music kills our hair cells. Studies suggest that tinnitus is caused by increased neural activity in the auditory brainstem where the brain processes sounds, causing some auditory nerve cells to become overexcited.