2013
Methylphenidate remediates error-preceding activation of the default mode brain regions in cocaine-addicted individuals
Matuskey D, Luo X, Zhang S, Morgan PT, Abdelghany O, Malison RT, Li CS. Methylphenidate remediates error-preceding activation of the default mode brain regions in cocaine-addicted individuals. Psychiatry Research 2013, 214: 116-121. PMID: 23973363, PMCID: PMC3811038, DOI: 10.1016/j.pscychresns.2013.06.009.Peer-Reviewed Original ResearchMeSH KeywordsAdultCentral Nervous System StimulantsCerebral CortexCocaine-Related DisordersCognition DisordersFemaleHumansImage Processing, Computer-AssistedInhibition, PsychologicalMagnetic Resonance ImagingMaleMethylphenidateMiddle AgedModels, NeurologicalNeural PathwaysNeuropsychological TestsOxygenPhotic StimulationReaction TimeConceptsFunctional magnetic resonance imagingStop-signal taskCD individualsCerebral activationPrecuneus/posterior cingulate cortexSystolic blood pressureInfluence of methylphenidateEffects of methylphenidateMagnetic resonance imagingPosterior cingulate cortexBrain imaging studiesCocaine-addicted individualsDefault mode networkAgonist therapyBlood pressureIntravenous methylphenidateCortico-striatoHealthy controlsCocaine-dependent individualsThalamic activationCingulate cortexResonance imagingBrain regionsMethylphenidateCocaine dependence
2009
Retrograde effects of triazolam and zolpidem on sleep‐dependent motor learning in humans
MORGAN PT, KEHNE JH, SPRENGER KJ, MALISON RT. Retrograde effects of triazolam and zolpidem on sleep‐dependent motor learning in humans. Journal Of Sleep Research 2009, 19: 157-164. PMID: 19682231, DOI: 10.1111/j.1365-2869.2009.00757.x.Peer-Reviewed Original ResearchConceptsTotal sleep timeSleep timeMotor learningSleep-dependent motor learningRapid eye movement (REM) sleepLonger total sleep timeGamma-aminobutyric acid receptor complexEye movement sleepREM onset latencyHealthy male subjectsStage 2 sleepMemory consolidationRetrograde effectsTriazolam conditionZolpidem conditionSkill memory consolidationMovement sleepSleep-dependent memory consolidationSufficient dosesHealthy peopleSleep laboratoryPlacebo conditionBenzodiazepine siteOnset latencyMale subjects
2008
Cocaine Users Differ from Normals on Cognitive Tasks Which Show Poorer Performance During Drug Abstinence
Pace-Schott EF, Morgan PT, Malison RT, Hart CL, Edgar C, Walker M, Stickgold R. Cocaine Users Differ from Normals on Cognitive Tasks Which Show Poorer Performance During Drug Abstinence. The American Journal Of Drug And Alcohol Abuse 2008, 34: 109-121. PMID: 18161649, DOI: 10.1080/00952990701764821.Peer-Reviewed Original ResearchConceptsVerbal recognition memoryCocaine usersCocaine-dependent individualsCocaine-induced impairmentRecognition memoryCognitive tasksCognitive batteryCognitive changesDrug-free baselineDrug abstinenceAbstinencePoor performanceMemoryCocaine useDrug useDay cocaineNormative valuesAttentionCocaineTaskImpairmentIndividualsBatteriesInpatient studyPilot Study of Lorazepam and Tiagabine Effects on Sleep, Motor Learning, and Impulsivity in Cocaine Abstinence
Morgan PT, Malison RT. Pilot Study of Lorazepam and Tiagabine Effects on Sleep, Motor Learning, and Impulsivity in Cocaine Abstinence. The American Journal Of Drug And Alcohol Abuse 2008, 34: 692-702. PMID: 18850496, DOI: 10.1080/00952990802308221.Peer-Reviewed Original ResearchConceptsSleep-dependent learningCocaine-dependent personsEffects of lorazepamCognitive effectsCognitive functionMotor learningTotal sleep timeDependent learningImpulsivitySlow-wave sleepCocaine abstinenceSleep latencyAbstinenceSleep timeSleepDependent personsLearningLight sleepCognitionCocaine administrationSedative hypnoticsPilot studyLorazepamParticipantsDifferent GABA