Measures of Sleep

Question 1

States of Consciousness

(2)

Answer 1

• altered - distinctly different change in quality and pattern of mental activity
• normal waking - being awake and aware of the environment

Question 2

EEG

(electroencephalography) (2)

Answer 2

• detects, amplifies and records electrical activity in the brain in the form of brain waves
• objective and quantitative

Question 3

EMG

(electromyography) (2)

Answer 3

• detects, amplifies and records electrical activity of the muscle movement and tension
• objective and quantitative

Question 4

EOG

(electro-oculography) (3)

Answer 4

• detects, amplifies and records electrical activity of the muscles that control eye movement
• used to differentiate between REM and NREM sleep
• quantitative and objective

Question 5

Sleep Diaries

Answer 5

• self report of an individual’s sleeping and waking activities
• primarily subjective but can be objective
• qualitative and quantitative
  +does not require special equipment or envrionment, provides rich qualitative data about subjective experiences and personal opinions
  -prone to bias, cannot provide data during sleep; only before and after

Question 6

Video Monitoring

(3)

Answer 6

• monitor and record externally observable physiological responses during sleep
• qualitative
• measure is objective but interpretation is subjective
  +not prone to bias, can observe sleep disturbances and physical responses during sleep
  -requires special environment and equipment which may lead to artificiality. cannot observe internal physiological responses during sleep

Question 7

BATD Waves

(4)

Answer 7

• beta - high fre. low amp. | during normal waking activites
• alpha - during relaxed, calm waking state of consciousness
• theta - during drowsiness and falling asleep
• delta - low fre. high amp. | during deep, dreamless sleep