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Sleep Heart Health Study

Appendix A - List of Illustrations

Please Note:

Illustrations are taken from both SHHS1 and SHHS2 and due to improvements by Compumedics screen format may slightly differ between generations.

Staging screens reflect 30 sec/page timebase, unless otherwise stated. Respiratory screens reflect 5 minute/page timebase, unless otherwise stated.

Figures (Examples of Signals)

Arousal Examples

  • ArFigures 1a and 1b - Sample Arousals
  • ArFigures 2a, 2b, 2c, 2d, 2e - Sample Artifacts, K complexes, spindles, EEG shifts
  • ArFigures 3a and 3b - Increase in EEG frequency from EMG artifact
  • ArFigures 4a, 4b, and 4c - Burst of delta activity or sawtooth-like waves - not arousals
  • ArFigures 5a and 5b - EEG acceleration superimposed on slower waves
  • ArFigures 6a, 6b and 6c - Arousals in REM, EMG activity

Episodic Event Examples

  • EpFigures 1a and 1b - Sleep spindle activity
  • EpFigures 2a and 2b - Medication effects on spindles
  • EpFigures 3a, 3b, 3c, and 3d - Examples of K complexes
  • EpFigures 4a, 4b, 4c, and 4d - Hypersynchrony
  • EpFigures 5a, 5b, 5c, 5d, and 5e - Seizure discharges

Sleep Stages

  • SsFigures 1a and 1b - Wake; alpha with eyes open
  • SsFigures 1c and 1d - Wake; alpha with eyes closed
  • SsFigures 2a, 2b, 2c and 2d - Stage 1 sleep; theta, beta.
  • SsFigures 3a, 3b, and 3c - Stage 2 sleep; sleep spindles, K-complex
  • SsFigures 4a K-complexes imbedded within an arousal
  • SsFigures 5a, 5b, 5c, and 5d - Deep Sleep (Stage 3 and 4); high-voltage slow waves
  • SsFigures 6a, 6b, 6c, 6d, and 6e - Rem sleep examples
  • SsFigures 7a, 7b, 7c, 7d, 7e, and 7f - Delta waves in REM; REM density; beta activity and isolated Ks in REM
  • SsFigures 6a and 8a - Wake-REM transition
  • SsFigures 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 9j, and 9k - Interruption of Stage REM; end of stage REM
  • SsFigures 10a, 10b, 10c, and 10d, 11a, 11b, 11c, and 11d - Spontaneous end of Stage REM
  • SSFigure 12a, 12b, and 12c - Scoring REM when EMG is difficult to interpret

Respiratory Events

  • ResFigures 1a - Normal breathing
  • ResFigures 1b - Periodic breathing
  • ResFigures 1c and 1d - Periodic large breaths
  • ResFigures 2a, 2b, 2c, and 2d - Obstructive Apneas
  • ResFigures 3a, 3b, and 3c - Hypopnea
  • ResFigures 4a, 4b, and 4c - Distinguishing between Hypopneas & Apneas
  • ResFigures 4d, 4e, and 4f - Variation in signal amplitude on airflow, thoracic, abdominal
  • ResFigures 5a, 5b, and 5c - Central Apneas
  • ResFigures 6a, 6b, and 6c - Distinguishing between Central and Obstructive Apneas
  • ResFigures 6d - Paradoxical breathing
  • ResFigures 6e, 6f, and 6g - When to start/stop events
  • ResFigures 6h, 6i, and 6j - Trough-to- trough marking of respiratory events
  • ResFigures 7a and 7b - Respiratory events in a series
  • ResFigures 7c, 7d, and 7e - Marking respiratory events after large breaths
  • ResFigures 7f, 7g, 7h, 7i, and 7j - Marking one long event vs. two short events
  • ResFigures 7k and 7l - Periods of hyperventilation followed by hypoventilation
  • ResFigures 7m, 7n, 7o, and 7p - Scoring respiratory events in series, ambiguous amplitude changes

QS Form

Unusual occurrences during Sleep

  • QSFigures 1a and 1b - Abnormal wake EEG
  • QSFigures 2a, 2b, and 2c - Physiologic alpha intrusion
  • QSFigures 2d - Alpha-like artifact
  • QSFigures 3a, 3b, 3c, 3d, 3e and 3f - Abnormal eye movements
  • QSFigures 4a, 4b, 4c, and 4d - Periodic breathing in sleep
  • QSFigures 5a, 5b, and 5c - Periodic large breaths
National Sleep Research Resource
Sleep Heart Health Study