stage 1 sleep | definition

  • first stage of sleep
  • transitional phase that occurs between wakefulness and sleep; the period during which a person drifts off to sleep

Source:

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020). Psychology 2e. Houston, Texas: OpenStax. Access for free at https://openstax.org/details/books/psychology-2e

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