Aperson is connected to an electroencephalograph, a machine that records the brain's electrical activity. the person is reinforced when his or her pattern of brain waves changes in order to treat a disorder such as epilepsy. this technique is best called

Neurofeedback

Explanation:

According to my research on studies conducted by various neurologists, I can say that based on the information provided within the question this technique is best called Neurofeedback. This refers to the results that are provided by an electroencephalograph (EEG) which are then reorganized and retrained by using sound and visual signals in order to treat certain disorder's such as epilepsy.

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we both have laws and checks and balances.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.