Emotion- A feeling state characterized by physiological arousal, expressive
behaviors, and a cognitive interpretation.
James-Lange Theory- The theory that emotion stems from the physiological
arousal that is triggered by an emotion-eliciting stimulus.
Cannon-Bard theory- The theory that an emotion-eliciting stimulus
simultaneously triggers physiological arousal and the experience of
Sympathetic nervous system- A branch of the autonomic nervous system that
controls the involuntary activities of various organs and mobilizes the
body for fight or flight.
Parasympathetic nervous system- The division of the autonomic nervous
system that reduces arousal and restores the body to its pre-energized
Polygraph- An electronic device that records multiple channels of autonomic
arousal and is often used as a lie-detector test.