Definition

Question 0

AC amplifier

Answer 0

Alternating current amplifier. an amplifier designed to process fast signal frequencies

Question 1

Abnormal movement

Answer 1

A measure of respiratory effort reflecting movement of the diaphragm

Question 2

AC signal

Answer 2

Alternating current signal. these are relatively fast signal frequencies such as EEG waves. can be either positive or negative signals

Question 3

Active sleep

Answer 3

A stage of sleep in infants synonymous with REM sleep in adults

Question 4

Advanced sleep phase syndrome (ASPS)

Answer 4

A circadian rhythm disorder in which the phases of the daily sleep/wake cycle are advanced with respect to clock time

Question 5

Alpha - Delta sleep

Answer 5

Alpha waves occurring in Delta sleep

Question 6

Alpha intrusion

Answer 6

The appearance of Alpha activity during sleep

Question 7

Alpha rhythm

Answer 7

EEG waveform activity in the 8-13Hz range, seen predominantly in the occipital regions of the brain

Question 8

Alpha wave

Answer 8

And EEG waveform, Seen most often during relaxed wake time while eyes are closed. The frequency of Alpha waves is 8-13Hz

Question 9

Ambulatory monitor

Answer 9

Portable system used record physiological data during sleep

Question 10

Amplifier

Answer 10

An electric instrument designed to increase the voltage of an incoming signal

Question 11

Amplitude

Answer 11

The voltage of a wave

Question 12

Anterior Tibialis EMG

Answer 12

A recording of the muscle activity from the outer muscle of the shinbone

Question 13

Apnea

Answer 13

Lack of air flow for at least 10 seconds during sleep. Apnea this may be central or obstructive

Question 14

Apnea index (AI)

Answer 14

A measure of the severity of sleep apnea

Question 15

Apnea/hypopnea index

Answer 15

The number of hypopneas and apneas per hours of sleep

Question 16

Arousal

Answer 16

an interruption of sleep continually in which there is a shift in the EEG frequency

Question 17

Artifact

Answer 17

Any unwanted signal recorded within a sleep parameter

Question 18

Attenuation

Answer 18

Decreased amplitude of a wave

Question 19

Auto adjusting continuous positive airway pressure device

Answer 19

A type of CPAP machine that monitors changes in breathing and compensates automatically by appropriate adjustments in pressure

Question 20

Automatism

Answer 20

Automatic action. An action performed without intention or awareness

Question 21

Adaptive servo-ventilation

Answer 21

A new treatment for central sleep apneas, mixed apnea, Cheyne-stokes and complex sleep apneas

Question 22

Atomic

Answer 22

Without normal muscle tone

Question 23

Basic sleep cycle

Answer 23

Progression through sleep stages. For normal adult, the first cycle begins by going from wakefulness to NREM sleep. The first REM period follows the first period of NREM sleep, and the two sleep states continue to alternate throughout the night with an average period of about 90 minutes. A night of normal human sleep usually consists of 4-6 NREM/REM sleep cycles

Question 24

Benzodiazepines

Answer 24

Developed in the 1950’s, a class of compounds the tranquilizes and sedated

Question 25

Beta activity

Answer 25

EEG waveform with a frequency of greater than 13Hz

Question 26

Beta rhythm

Answer 26

An EEG waveform of 13Hz or more. Beta rhythm is usually associated with drug use or anxiety

Question 27

Bio-calibrations

Answer 27

Also known as physiologic calibrations. A sequence of actions by the patient that verifies that the sleep equipment is working properly

Question 28

Bio-electrical potentials

Answer 28

Electrical voltages originating from a living source