Which two time measures are used to calculate Sleep Efficiency (SE)?

What type of current flows only in one direction?

Before starting the study, which step can prevent many artifact issues?

The digital rectal examination (DRE) is useful in assessing for which of the following:

In modern systems, the patient ground is never directly connected to earth ground because ___.

What is the function of a 60 Hz notch filter?

According to Ohm’s Law, what happens to current if voltage increases and resistance decreases?

Which unit measures voltage in PSG recordings?

Lights Out 9:18:17 pm, Lights On 5:01:17 am, SO Sleep Onset 9:34:17 pm, N1 Duration 14.5 min., N2Duration 282.5 min., N3 Duration 0.0 min., REM Duration 94.5, REM Latency (from SO): 127.5 min., Total Wake Time (LO to LO): 71.5 min. What is the SE Sleep Efficiency (%)?

A sweating patient’s artifact cannot be resolved by cooling or derivation changes. As a last resort, what can be adjusted?