Lisa Feldman Barrett

Barrett's theory of constructed emotion posits that emotions are not hardwired, universal reactions, but are actively assembled by the brain using bodily signals, past experiences, and learned concepts. This contradicts the classical view that each emotion is located in a specific part of the brain. Her research heavily relies on the brain's predictive regulation of the body.

Interoception, the brain's perception of bodily signals like heart rate and digestion, is central to Barrett's work. She argues that your brain constantly uses interoceptive signals to predict your body's needs and create your emotional experiences. In her view, emotions are essentially your brain's best guess about what these bodily sensations mean.

Her most famous book summarizing this research is *How Emotions Are Made: The Secret Life of the Brain*. In it, she breaks down the neuroscience behind the theory of constructed emotion for a general audience. The book challenges long-standing beliefs about universal facial expressions of emotion.

Barrett's research directly challenges Paul Ekman's classical theory that there are universally recognized, hardwired basic emotions with specific facial expressions. She argues that facial movements are highly variable and context-dependent rather than fixed fingerprints of emotion. This debate is one of the most prominent controversies in modern affective neuroscience.