• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

In humans, the conventional characterization of sleep into rapid eye movement (REM) and non-REM (NREM) types, with further division of NREM sleep into grades of depth, is over 50 years old and was developed at a time when understanding of neurobiology was limited, current ...

    • Loading...
    locked icon

    Sign in to access this content

    Get a 30 day FREE TRIAL

    • Watch videos from a variety of sources bringing classroom topics to life
    • Read modern, diverse business cases
    • Explore hundreds of books and reference titles