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Each channel (waveform) represents the difference between two adjacent electrodes.

During the machine cals the negative signal sent to the polygraph causes a ____ pen deflection.

A tool or device on a polysomnograph that sets a limitation to the high frequency signals that are allowed to pass through the amplifier.

Filters 50 to 60 Hz activity.

An unwanted low frequency, usually high amplitude signal.

CPAP pressures usually range from:

If the distance from Inion to Nasion is 47cm, what is the distance from Cz to Pz? _____

A circadian rhythm disorder characterized by irregular bedtimes or awakening times.

A measure of respiratory effort that uses a coiled wire sewn into an elastic belt. A current is applied to the wire. When the patient breathes in, the wire uncoils and the frequency of the applied current is changed.

Question ____ is any exogenous (external) cue that synchronizes an organismâ s internal clock to the earthâ s 24 hour light/dark cycle.