Tinnitus hum, but it can also arise as a subjective phenomenon from an increased awareness of blood flow in the ear. Rarely, pulsatile tinnitus may be a symptom of potentially life-threatening conditions such as carotid artery aneurysm or carotid artery dissection. Pulsatile tinnitus may also indicate vasculitis, or more specifically, giant cell arteritis. Pulsatile tinnitus may also be an indication of idiopathic intracranial hypertension. Pulsatile tinnitus can be a symptom of intracranial vascular abnormalities and should be evaluated for "irregular noises of blood flow" (bruits). The mechanisms of subjective tinnitus are often obscure. While it is not surprising that direct trauma
Body part as an object aphasics have been put forward since then, including intellectual degradation, and the inability to carry out pretended actions. Denny-Brown takes a more holistic approach and suggested ideational apraxia results from diffuse brain damage. Body part as object is a relatively new concept in scientific literature. Past studies have suggested that BPO pantomimes may allow aphasics to avoid an impaired cognitive function. By not having to reproduce a movement outside of the usual context, they can have a more vivid experience of acting on an object. What is known as BPO pantomiming in children was first discussed in Goodglass and Kaplan’s