Which type of calibration is based on patient instructions to verify signal response and quality?

Physiological calibration is a method that involves patient instructions to verify that the signals being recorded are accurate and reliable. This type of calibration focuses on the individual's physiological responses and the system's ability to interpret and display those responses correctly. By guiding the patient through specific tasks or actions, the technologist can ensure that the monitoring equipment is sensitive to the changes in the patient's state, thus confirming that the data being collected accurately reflects the patient's physiological conditions. This is essential in polysomnography since the accuracy of the signals directly impacts diagnosis and treatment efficacy.

Other calibration types serve different purposes; for instance, electrical calibration is concerned with the equipment's electronic performance and signal integrity, while visual calibration is focused on ensuring that visual elements of the data display are correctly aligned and functioning. Functional calibration usually pertains to overall system performance but does not specifically involve patient interaction to verify accuracy of physiological signals directly.