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Lesson PreviewLesson 5 of 6 in this unit

1.5: Sleep

Part of Biological Bases of Behavior in AP® Psychology. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

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Sleep is one of the most universally experienced altered states of consciousness, yet for a long time scientists couldn't explain why we do it. Modern sleep research has uncovered stages, cycles, dream patterns, and disorders, and most importantly the answer to "why do we sleep" is now reasonably well understood. This topic also introduces consciousness as a concept that runs throughout the rest of the course.

In this unit

6 lessons

  1. 1.1Interaction of Heredity and EnvironmentPreview lesson
  2. 1.2The Nervous SystemPreview lesson
  3. 1.3The Neuron and Neural FiringPreview lesson
  4. 1.4The BrainPreview lesson
  5. 1.5SleepThis lesson
  6. 1.6SensationPreview lesson

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