Dopamine, often labelled the 'pleasure chemical', is widely misunderstood. Neuroscientist Nikolay Kukushkin explains that this neurotransmitter is not about pleasure itself, but about driving us to seek more. It is the brain's tool for motivation, pushing us out of comfort zones and into novelty.
Our brains have two key systems: the cerebral cortex, which seeks alignment between expectations and reality, and the reward system, which uses dopamine to propel us forward. Without dopamine, as seen in encephalitis lethargica patients from 1915-1926, people became passive and unresponsive, unable to initiate actions like reaching for food.
The idea that hunter-gatherers lived in a state of blissful contentment is a myth. Kukushkin argues that humans have always been restless and dissatisfied. This is by design: we are not meant to feel satisfied with what we have, but to constantly look for more. Dopamine ensures we never settle, driving progress but also frustration.
