English to Russian Science Biology (-tech,-chem,micro-)

Доброго времени суток.

The stories from that night’s speakers were the bridge the organization needed. But even Paul Zak was a little confused in his study by how well storytelling elicited donations. “If you think about it,” he wrote, “the donations are quite odd. The money donated to charity cannot help these actors out of their fictional binds. Nevertheless, oxytocin makes people want to help others in costly and tangible ways.”

What Zak was speaking of is the lasting effect of story, that is, the third part of effective bridge building, namely, the transformation that occurs from changes in the brain. Oxytocin in the brain, which is elicited by story, also activates another circuit called HOME (human oxytocin-mediated empathy). Among other things, that circuit uses dopamine, which is a ***reinforcement neurochemical***. And dopamine helps us learn by giving us a little jolt every time something notable happens.

https://ru.wikipedia.org/w/index.php?title=Дофамин&oldid=110...

Считается, что дофамин является одним из химических факторов внутреннего подкрепления (ФВП) и служит важной частью «системы вознаграждения» мозга, поскольку вызывает чувство удовольствия (или удовлетворения), чем влияет на процессы мотивации и обучения

Как бы это с "neurochemical" получше увязать?

Спасибо.