Olga Alexandrova.

09/03/2026

02/03/2026

When we talk about addiction, it often seems as if the substance itself is the main issue.

But in reality, everything begins much earlier — with how the brain assigns priorities, how it decides what matters to us at all.

The brain has a system that distributes priority. It literally assigns “weights”:

* what is worth effort
* what deserves attention
* what is worth acting for

This is called motivational salience.

It is the internal “weight” the brain assigns to a stimulus. The dopaminergic system plays a major role in this process.

🧬 Dopamine is not a “pleasure hormone,” as it is often described. It is a neurotransmitter of significance. It does not make a stimulus pleasurable — it makes it important.

Under normal conditions, this system is flexible:

* food
* connection
* safety
* novelty
* goals

Everything has its relative value.

But when the distribution of significance becomes distorted, one stimulus may receive a disproportionately high weight.
And that is where the story of addiction begins.

02/03/2026

One of the most clinically significant features of addiction is its persistence over time. A person may remain in remission for years, yet encountering a certain context can suddenly reactivate craving.

🧠 This is not merely a memory. It is the reactivation of the motivational system.

With repeated use, the brain learns to associate the substance with surrounding cues:

* places
* time of day
* people
* emotional states

These cues become predictors of reward and gradually acquire motivational power of their own.

At the neural level, the process looks roughly like this:

✔️ cues activate the amygdala and hippocampus (emotional and contextual memory)
✔️ information is transmitted to the ventral striatum
✔️ the mesolimbic dopamine system initiates a “seeking” state, producing motivational arousal

🌫️ A key point: this process is implicit and rapid. The prefrontal cortex — responsible for evaluating consequences and inhibiting impulses — activates later.

🌫️ When its regulatory function is reduced (stress, fatigue, emotional overload), the balance shifts toward automatic motivation.

This is why a trigger can produce bodily tension, attentional narrowing, and behavioral readiness before a person consciously recognizes a desire to use.

Relapse is the reactivation of the motivational salience system — a system capable of maintaining hypersensitivity for decades.

02/03/2026

When we talk about addiction, it often seems as if the substance itself is the main issue. But in reality, everything begins much earlier — with how the brain assigns priorities, how it decides what matters to us at all.

The brain has a system that distributes priority. It literally assigns “weights”:

* what is worth effort
* what deserves attention
* what is worth acting for

This is called motivational salience.

It is the internal “weight” the brain assigns to a stimulus. The dopaminergic system plays a major role in this process.

🧬 Dopamine is not a “pleasure hormone,” as it is often described. It is a neurotransmitter of significance. It does not make a stimulus pleasurable — it makes it important.

Under normal conditions, this system is flexible:

* food
* connection
* safety
* novelty
* goals

Everything has its relative value.

But when the distribution of significance becomes distorted, one stimulus may receive a disproportionately high weight.

And that is where the story of addiction begins.