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If you are impulsive, take modafinil and count to 10
Date:2/1/2013

strategy from the attention deficit disorder 'playbook'. Modafinil has effects that resemble amphetamine. This interesting new study suggests that, if you are impulsive, modafinil may help your self-control," commented Dr. John Krystal, Editor of Biological Psychiatry.

They found that modafinil improved response inhibition in alcohol-dependent participants with initially poor response inhibition, but response inhibition was diminished in those who initially performed better. Modafinil also modulated brain activation in key brain regions directly involved response inhibition, but again, only in those patients with poor baseline response inhibition.

Schmaal explained further, "Most importantly, the study showed that modafinil had a positive effect in patients with high initial levels of impulsivity, whereas modafinil had a detrimental effect in patients with low initial levels of impulsivity. Positive effects of modafinil were associated with normalization of brain activation and connectivity patterns during the stop signal task."

These findings indicate that baseline levels of impulsivity should be taken into account when considering treatment with modafinil.

"The current observation of 'one size does not fit all' (i.e., that a pharmacotherapy may constitute a useful adjunct therapy for some individuals but not for others) calls for caution when prescribing modafinil and strongly supports the potential of and the need for personalized medicine," added Schmaal.


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Contact: Rhiannon Bugno
Biol.Psych@utsouthwestern.edu
214-648-0880
Elsevier
Source:Eurekalert

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