Which action tests the cochlear portion of the acoustic nerve during assessment?

The action of having the client close their eyes and listen for a ticking watch effectively tests the cochlear portion of the acoustic nerve. This test specifically assesses the ability to detect sound and is crucial for evaluating auditory function. The cochlear nerve transmits sound information from the inner ear to the brain, allowing for sound perception. By asking the client to listen for an unobtrusive sound like a ticking watch while their eyes are closed, the evaluator can gauge the integrity of the auditory pathways and the ability of the cochlear nerve to function properly.

Other actions, such as asking the client to move their head or hum, do not focus solely on auditory detection and can involve other sensory or motor pathways. Testing balance with eyes closed is more related to the vestibular system and helps assess balance rather than directly testing hearing or the cochlear nerve function. Thus, the specific action of listening for a ticking watch provides a targeted assessment of the cochlear portion of the acoustic nerve, confirming its role in sound processing.