Which high pass filter setting is most appropriate for recording respiration?

The most appropriate high pass filter setting for recording respiration is set at 0.1 Hz. This setting allows for the capture of low-frequency signals that are characteristic of respiratory patterns. Respiration involves changes in air movement and pressure that occur at low frequencies, typically ranging from about 0.1 Hz to 0.5 Hz for normal breathing patterns. A high pass filter eliminates low-frequency noise that might otherwise interfere with the detection of these respiratory signals, allowing for a clearer representation of the data.

Using a higher frequency setting, such as 1.0 Hz or 5.0 Hz, may filter out important components of the respiratory waveform, leading to the potential omission of essential details in the breathing cycle that are critical for accurate analysis. Thus, the 0.1 Hz setting effectively accommodates the frequencies of respiration while minimizing interference from low-frequency artifacts, making it the optimal choice for this specific recording purpose.