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Emotion

life science Maturity 11-13 Vital Level 2 Next article →

Emotions are complex physical and mental states. They are triggered by neurophysiological changes in the body. These changes are often linked to thoughts, feelings, and behavioral responses. An emotion can result in a sense of pleasure or displeasure. While there is no single scientific consensus on a definition, emotions are closely tied to mood, temperament, and personality. They can even influence a person's creativity. Today, many different fields study them. These include psychology, medicine, history, sociology, computer science, and philosophy.

To understand how an emotion happens, we can look at the Component Process Model (CPM). This model suggests that an emotional episode requires several parts to work together. First, there is cognitive appraisal. This is the process where a person evaluates an event or an object. This evaluation then triggers bodily symptoms, which are the physical changes in the body. Next, action tendencies develop. These are motivations that prepare the body for specific movements. Almost always, expression occurs through facial and vocal changes to communicate with others. Finally, the person has a feeling, which is the private, subjective experience of the emotion.

Expression of the Emotions Figure 15
Expression of the Emotions Figure 15

Scientists categorize emotions in different ways depending on their discipline. In psychology and philosophy, an emotion is usually seen as a conscious experience. This experience includes biological reactions and mental states. Sociologists like Peggy Thoits have described emotions as involving cultural labels, such as "anger" or "surprise." These labels help people understand their own physiological components and body actions. Some researchers also study emotion dynamics. This means they look at how the intensity and stability of emotions change in daily life. They also study how different emotions might augment or blunt one another over time.

Timeline of brain models of emotion
Timeline of brain models of emotion

Humanity has studied the mind and bodily sensations for a very long time. Many Western philosophers, including Aristotle, Plato, and Descartes, proposed theories about what motivates human action. During the Age of Enlightenment, the Scottish thinker David Hume offered a famous perspective. In his 1773 book, *A Treatise of Human Nature*, he argued that passions drive human conduct. Hume suggested that reason is often the "slave" of the passions. This means that our desires and experiences often direct our actions more than pure logic does. The word "emotion" itself comes from the French word *émotion*, meaning "to stir up." The modern concept of emotion emerged in the English language around the 1830s.

Sixteen faces expressing the human passions. Wellcome L0068375 (cropped)
Sixteen faces expressing the human passions. Wellcome L0068375 (cropped)

Researchers have tried to classify emotions into specific groups. For over 40 years, Paul Ekman has argued that certain emotions are universal. His research identified six basic emotions: anger, disgust, fear, happiness, sadness, and surprise. He found that these are recognized across many different cultures. Later, researchers Daniel Cordaro and Dacher Keltner expanded this list. They found evidence for emotions like awe, contentment, and sympathy. Robert Plutchik took a different approach with his "wheel of emotions." He proposed eight primary emotions, such as joy versus sadness or trust versus disgust. He suggested that these primary emotions can blend together like colors to create complex emotions.

Plutchik-wheel
Plutchik-wheel
Plutchik Dyads
Plutchik Dyads

It is important to distinguish emotions from other mental states. An emotion is often a rapid response to a specific stimulus. In contrast, a mood is an enduring state that is less intense. Moods often lack a specific context or trigger. There is also the concept of an emotional disposition. This is a character trait where a person is more likely to feel certain emotions quickly. For example, an irritable person has a disposition toward irritation. Some people may also experience alexithymia. This is a term used in psychiatry for the inability to perceive or express emotions.

Geneva Emotion Wheel - English
Geneva Emotion Wheel - English

Emotions are deeply connected to the broader study of human biology and society. Modern research uses advanced tools like PET and fMRI scans. These tools allow neuroscientists to study the affective processes happening in the brain. By looking at these physical processes, scientists can better understand the link between the mind and the body. This research helps us understand how emotions affect our well-being throughout our entire lifespan. Understanding these systems helps us see how our internal states interact with the external world.

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🖼️ Images & Media (9)
File:Timeline of brain models of emotion.svg
Timeline of brain models of emotion.svg
File:Plutchik Dyads.svg
Plutchik Dyads.svg
File:Plutchik-wheel.svg
Plutchik-wheel.svg
File:Emotions - 3.svg
Emotions - 3.svg
File:Psi-stylized.svg
Psi-stylized.svg
File:Sixteen faces expressing the human passions. Wellcome L0068375 (cropped).jpg
Sixteen faces expressing the human...
File:Expression of the Emotions Figure 15.png
Expression of the Emotions Figure 15.png
File:Geneva Emotion Wheel - English.png
Geneva Emotion Wheel - English.png
File:James-Lange Theory of Emotion.png
James-Lange Theory of Emotion.png
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