Somatic tinnitus, also known as somatosound, refers to the perception of sound that originates within the body--in vascular, muscular, skeletal, or respiratory structures, or in the temporomandibular joint.
Pulsatile tinnitus, which pulses in synchrony with the heartbeat, is the most common somatosound.
Somatosounds can also be nonpulsatile, indicating a nonvascular source.
While subjective tinnitus consists of noises only the patient can hear, objective tinnitus refers to noises, including somatosounds
such as turbulent blood flow or palatal myoclonus, that a physician could at least theoretically detect by auscultation or with an amplifying device.