Glossary For Test Two

Question 0

Circadian Rhythm

Answer 0

Innate cycle of fluctuation in physiological and behavioral functions.

Question 1

Alpha waves

Answer 1

EEG waveform seen mostly during relaxed wake time while eyes are closed. Frequency is 8-13Hz

Question 2

CPAP

Answer 2

Continuous positive airway pressure. Therapy used for the treatment of obstructive sleep apnea

Question 3

Electrode

Answer 3

Conductive device applied to scape or body to record natural bio-electrical signals.

Question 4

Electroencephalogram (EEG)

Answer 4

Technique for measuring the electrical activity of the brain

Question 5

Electroencephalogram EEG

Answer 5

Technique for measuring the electrical activity of brain

Question 6

Electrooculography EOG

Answer 6

Technique for measuring resting potential for the retina. resulting signal called electrooculogram. Main applications are in aphthalmological diagnosis and in recording eye movement.

Question 7

Electromyographic EMG

Answer 7

Technique for measuring the electrical activity generated by a muscle.

Question 8

Frequency

Answer 8

Number of waveforms occurring within one second. Measured in cycles per second or hertz (Hz)

Question 9

Galvanometer

Answer 9

Instrument for detecting or measuring a small electrical current by movements of magnetic needle of of a coil in a magnetic field.

Question 10

K-complex

Answer 10

(Disturbance patterns) sharp negative deflection followed by a slower positive deflection in EEG recordings. Indicator of stage N2 (NREM2) sleep.

Question 11

Mastoid

Answer 11

Lower part of the bone behind the ear.

Question 12

MSLT

Answer 12

Multiple Sleep Latency Test- sleep study performed during the day in which the patient takes a series of short naps approximated 20 min long at a 2 hour intervals.

Question 13

Narcolepsy

Answer 13

Disorder of unknown etiology which is characterized by excessive sleepiness and inability to stay awake.

Question 14

NREM

Answer 14

Non REM sleep stage

Question 15

Occiput

Answer 15

2 cm above the inion on the forehead

Question 16

OSA obstructive sleep apnea

Answer 16

Sleep disorder characterized by pauses in breathing during sleep

Question 17

Paradoxical sleep

Answer 17

REM sleep. It’s called paradoxical because the EEG of the sleeping person in very similar to the brainwaves of being awake.

Question 18

REM

Answer 18

Rapid eye movement

Question 19

Sleep apnea

Answer 19

Same as OSA

Question 20

Sleep spindles

Answer 20

Disturbance patterns a burst of 12-14Hz EEG activityasting at least 0.5 seconds. Most common in stage N2

Question 21

Sleep stages

Answer 21

Intervals of sleep which have distinct

Characteristics see on EEG,EOG, and EMG channels.

Question 22

Vertex

Answer 22

Uppermost surface of the head of an arthropod or vertebrate, central area on top of head

Question 23

Vertex wave

Answer 23

Disturbance problem. Sharp negative deflection seen on EEG channel. Also called vertex sharp waves and are indicator kd stage N1 sleep