Give Main ideas of James Lange theory and canon Bard theory of emotion?

James-Lange theory of emotion:
1. Emotions are the result of physiological responses to external stimuli.
2. Emotions are experienced after the body reacts to a stimulus, rather than before.
3. Different emotions are associated with different physiological responses.
4. The theory suggests that changing our physiological responses can help us change our emotional state.

Cannon-Bard theory of emotion:
1. Emotions and physiological responses occur simultaneously and independently of each other.
2. Emotions are the result of cognitive appraisal of a situation, rather than just physiological responses.
3. The theory suggests that emotions can be experienced without any physiological changes.
4. Emotions are processed in the brain's cortex, rather than in the body's physiological responses.

James-Lange Theory of Emotion

- Main Idea: Emotions are生理 responses that trigger subjective feelings.
- Process:
- An external stimulus triggers a physiological response (e.g., increased heart rate).
- The perception of this physiological response leads to the subjective experience of emotion (e.g., fear).

Cannon-Bard Theory of Emotion

- Main Idea: Emotions are physiological and subjective experiences that occur independently and simultaneously.
- Process:
- An external stimulus triggers both physiological responses and the subjective experience of emotion.
- These two components are not causally related.