Graphical presentation of different influences on reaction time

Graphical presentation of different influences on reaction time 

The effect of dopamine agonist depends on the dose high dose agonist lead to an increase of reaction time, low dose agonists to a decrease of reaction time (see Dicussion of references, page 322). In order to decrease the reaction time, dopamine has not only to concentrate the neuronal activity but to increase the activity of the remaining cells. 

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