dopamine

Against which, I'd guess there might be increased dopamine activity.

Dopamine may also make some people more vulnerable to addiction.

Dopamine cannot be given directly because it will not pass from the blood into the brain.

It is one of the four major dopamine pathways in the brain.

Levels of dopamine can be used to distinguish between these two types.

However, the effects of dopamine are complicated and not very well understood.

People with more available dopamine are generally somewhat better at the same tasks.

The faster dopamine levels go up, the greater the potential for abuse.

For some, though, there may be more to thrill than only a dopamine rush.

A lack of dopamine is responsible for many diseases and conditions.

This means that dopamine released in these pathways has less effect.

Evidence also exists that dopamine is activated at similar times.

Furthermore, even if dopamine were without risk, its effects can be unpredictable.

These work by reducing the action of a chemical in the brain called dopamine.

The key to how this clock works - or fails to work - is dopamine.

It is known to affect genes that traffic in dopamine.

Dopamine is not the only transmitter affected by the disease.

This next step would do as a test of the dopamine regulators' power over her captive.

But they simply kept the thing in check and had the side effect of enlarging the dopamine system.

It does this by increasing dopamine transmission in the brain.

Several studies were published last year looking at monetary rewards and dopamine.

However, these studies provide evidence that estrogen does indeed have some effect on the release of dopamine.

For that reason, dopamine plays a significant role in reinforcing experiences.

Within the participants dopamine was again increased with viewing of the photographs.

Blocking dopamine is effective in about ninety percent of patients.