Introduction to Emotion

Emotion is defined as:
- A response of the whole organism
- Involves physiological arousal
- Encompasses expressive behaviors
- Includes conscious experience that arises from individual interpretations of events.

Order of Arousal and Emotion:
- Does physiological arousal occur before or after emotional feelings?
- Two main theories address this:
  - James-Lange Theory:
  - Proposes that arousal precedes emotion: we experience an emotion because we are aware of our physiological responses to an emotion-arousing stimulus.
  - Example: We smile, and therefore we feel joy.
  - Cannon-Bard Theory:
  - Suggests that emotional feelings and physiological reactions occur simultaneously.
  - Proposes that bodily responses occur parallel to cognitive responses, not one influencing the other.
Interaction Between Feeling and Thinking:
- Cognition (thinking) influences emotion through our interpretations.
- Importance of top-down processing: how we assess stimuli significantly impacts our emotional response.
- Example: Roller coaster experience varies by interpretation.
  - Those who enjoy roller coasters feel exhilaration, while those who do not might feel fear.

Schachter-Singer Two-Factor Theory:
- Proposes that both physiological arousal and cognitive labeling are necessary for experiencing emotion.
- Emotion only arises when one labels the physiological arousal they are experiencing.
- Example: Feeling fear on a roller coaster if labeled as dangerous, as opposed to feeling joy if labeled as fun.

Arousal from one event can influence emotional responses to subsequent events.
Examples:
- Riots following sporting events (e.g., soccer match in the UK) where positive arousal leads to violent behavior.
- Events such as winning the Stanley Cup leading to riots, demonstrating how positive arousal can spill over into negative actions.

Joseph LeDoux and Richard Zajonc:
- Propose that some emotional responses occur instantly and outside of conscious awareness, without cognitive processing.
- Emotional responses can occur without reaching the higher brain cortex.
Robert Zajonc:
- Suggests emotional responses take a neural shortcut bypassing the cortex, going directly to the amygdala in the limbic system.
- Emotional responses require no deliberate thinking.
Richard Lazarus:
- Emphasizes that cognitive functions such as threat appraisal can influence emotional responses, even if the responses are still automatic and without conscious thought.
- Suggests that many crucial emotions arise from interpretations made without conscious cognition.

Thinking High Road:
- Sensory input routed to the cortex through the thalamus for analysis.
- Cortex then transmits the information to the amygdala, which produces the fear response.
Speedy Low Road:
- Fear stimuli transmitted directly to the amygdala, also through the thalamus.
- Allows for faster emotional reaction without cognitive processing.

Arousal can affect performance differently based on task difficulty:
- Performance peaks at lower levels of arousal for difficult tasks.
- Performance peaks at higher levels of arousal for simple or well-learned tasks.

Similar emotions share overlapping biological signatures.
Specific brain regions correlate with different emotions:
- Depression and negativity: Right frontal lobe activity.
- Happiness and enthusiasm: Left frontal lobe activity.

Polygraphs:
- Measure physiological arousal, not directly lies.
- Issues with accuracy: about one-third of tests are incorrect; many innocent individuals exhibit anxiety responses when accused.
- No confirmed cases of spies being apprehended via polygraph tests.
Concealed Information Test:
- More effective than polygraphs for lie detection, concentrating on specific details only known to the police and the guilty individual.
Delayed Response:
- Generally, a slower response time might indicate deception, as forming a lie often takes more time than stating the truth.