Which of the following statements is true regarding the ABR?

The statement that it requires patients to be still and quiet for accurate results captures an important aspect of how Auditory Brainstem Response (ABR) testing functions. The ABR measures the electrical activity in the auditory nerve and brainstem in response to sound stimuli. This measurement is sensitive to movement or muscle activity, which can introduce noise into the signals being recorded, thereby potentially affecting the accuracy of the results. Therefore, while patient cooperation is not typically a requirement for the test itself, it is crucial that the patient be as still and quiet as possible to minimize artifacts in the data collected.

Understanding the context of the test is essential. ABR is primarily used in cases where patients may not be able to give behavioral responses, such as infants or individuals with severe cognitive impairments. Because of this, while cooperation in the form of stillness is critical, the test is designed to be carried out without direct active cooperation; however, physical stillness is still an important factor for securing valid data.