Giorgi G.

Sleep chart

Visualization of sleep cycle

The sleep cycle is an oscillation between the slow-wave and REM (paradoxical) phases of sleep. It is sometimes called the ultradian sleep cycle, sleep–dream cycle, or REM-NREM cycle, to distinguish it from the circadian alternation between sleep and wakefulness.

We have two types of sleep charts:

  • Stages
  • Classic

Tech stack

  • D3.js
  • Angular 6
  • Javascript