During Which Part of a Night's Sleep Does REM Sleep

question 117

Multiple Choice

During which part of a night's sleep does REM sleep occupy the greatest amount of time?

• A) the first 1 or 2 hours
• B) at about the middle of the night
• C) the last part of the night's sleep
• D) the first hour and the last hour

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Definitions:

Feature Processing

In psychology, feature processing is the method through which the brain identifies and processes distinct elements of an object or scene, such as color, shape, or motion.

Top-Down Processing

An approach to perception that involves higher-level cognitive processes, such as expectations and previous knowledge, to interpret sensory information.

Müller-Lyer Illusion

A visual illusion in which two lines of the same length appear to be of different lengths because of the addition of inward or outward facing wings at the ends of the lines.