Final answer:
The venous hum might intensify with certain neck movements or pressure changes and diminish with others like lying down. Humming activates middle ear muscles that protect the cochlea from intense sounds.
Step-by-step explanation:
The venous hum may accentuate with certain maneuvers, for example, by compressing the jugular vein, increasing intrathoracic pressure, or turning the neck to the affected side. It may be diminished or disappear with maneuvers such as lying down or performing the Valsalva maneuver. These changes in the venous hum can help to differentiate it from other types of tinnitus or vascular noises.
Humming can have a significant effect on the middle ear by triggering two muscles known as the tensor tympani and the stapedius. These muscles contract reflexively in response to intense sound, such as the one produced during shooting, which leads to a reduction in the force transmitted to the cochlea, potentially protecting the inner ear from damage caused by loud noises.