情绪的内在逻辑

Long-lasting emotional states persist beyond threatening or pleas- ant events, scale with intensity, and coordinate multiple features of behavior and physiology. Brain representations of these states are found in many species, including flies, rodents, and humans. They can be measured behaviorally and through readouts of neural popu- lation activity in the brain, which remains elevated after an eliciting stimulus (1). For example, specific cell populations in the rodent hy- pothalamus can encode defensive, aggressive, or motivational states that outlast their initial stimulus, scale with the intensity of the ex- perience, and are essential to maintaining state-dependent behaviors (2). …