English to Russian Medical Medical (general) ...

This review presents a general model for the understanding of pain, placebo, and chronification of pain in the framework of cognitive neuroscience. The concept of a computational *cost-function* underlying the functional imaging responses to placebo manipulations is put forward and demonstrated to be compatible with the placebo literature including data that demonstrate that placebo responses as seen on the behavioural levelmay be elicited on all levels of the neuroaxis.

и еще:

ncongruence between the inner representation and the current input lead to a *cost-function* in terms of increased activity in cerebral regions attributed to evaluative and emotional components.

Что такое cost function?

Заранее спасибо.