Bernadette shows a variety of changes in the body across the day, including increases and decreases in arousal, body temperature, and states of consciousness. Together these changes are typically called the __________.

A) workspace hypothesis
B) circadian rhythm
C) sleep state
D) REM

Circadian Rhythm

Refers to the natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.

Arousal

A state of increased physiological activity or alertness, involving the activation of the sympathetic nervous system.

States of Consciousness

The different levels of awareness and wakefulness individuals experience, including wakefulness, sleep, dreaming, and altered states such as meditation or hypnosis.