Journal
AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE
Volume 34, Issue 5, Pages 584-593Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00952990802308239
Keywords
buprenorphine; cognitive impairment; maintenance treatment; methadone; vigilance
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Objectives: In the present study, we investigated whether buprenorphine as a partial mu-opioid receptor agonist is associated with less cognitive impairment than methadone. Methods: Neuropsychological functioning of opioid-dependent patients, previously assigned to methadone (MMP, n = 30) or buprenorphine (BMP, n = 26) maintenance treatment according to their own preference, was compared and dose effects were investigated. Results: MMP and BMP performed equally well on all measures of neuropsychological functioning including the trail making test, the continuous performance test, and a vigilance task. However, patients receiving a higher dose of methadone were impaired in a vigilance task. Conclusions: In a free-choice administration of methadone or buprenorphine, there seems to be no difference in cognitive functioning. Possible explanations are discussed.
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