Comprehensive Stroke Certification Fees and Benefits. The Joint Commission and American Heart Association / American Stroke Associationâs Comprehensive Stroke Center Certification includes a new and exclusive suite of benefits. The annual fee for the first year is prorated depending on the date of application for certification.
1 When the bones of the middle ear do not vibrate and become stiff, it can give rise to a hissing and vibrating sound in the ears. 2  Rupture of ear drum either due to trauma or due to loud sound can cause vibration in the ear during the initial stage. 3  Infection in the ear, cold and sinusitis can also cause vibration.
The vibrations are transferred to another medium, usually the air, and travel through it as sound waves. You hear a sound when its vibrations reach your eardrum, causing it to vibrate. The pitch of a sound is directly related to the frequency of the vibrations of its waves.he vibrations are transferred to another medium, usually the air, and travel through it as sound waves. You hear a sound when its vibrations reach your eardrum, causing it to vibrate. The pitch of a sound is directly related to the frequency of the vibrations of its waves.