2015
Ketamine-Induced Hallucinations
Powers A, Gancsos MG, Finn ES, Morgan PT, Corlett PR. Ketamine-Induced Hallucinations. Psychopathology 2015, 48: 376-385. PMID: 26361209, PMCID: PMC4684980, DOI: 10.1159/000438675.Peer-Reviewed Original ResearchMeSH KeywordsAdultDelusionsDose-Response Relationship, DrugFemaleFrontal LobeHallucinationsHumansKetamineMagnetic Resonance ImagingMalePerceptionPsychotic DisordersYoung AdultConceptsAuditory verbal hallucinationsPerceptual inputVerbal hallucinationsPredictive coding modelDelusion-like ideasPerceptual disruptionsPerceptual expectationsPerceptual environmentCoding modelPhenomenological experienceSensory stimuliStimulation environmentAuditory hallucinationsHealthy participantsHallmark symptomFirst-episode psychosisMusical hallucinationsMRI scannerHallucinationsParticipantsMagnetic resonance imaging (MRI) scannerPsychosisAmotivationPerceptVivid hallucinations
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 dependenceThe Impact of NMDA Receptor Blockade on Human Working Memory-Related Prefrontal Function and Connectivity
Driesen NR, McCarthy G, Bhagwagar Z, Bloch MH, Calhoun VD, D'Souza DC, Gueorguieva R, He G, Leung HC, Ramani R, Anticevic A, Suckow RF, Morgan PT, Krystal JH. The Impact of NMDA Receptor Blockade on Human Working Memory-Related Prefrontal Function and Connectivity. Neuropsychopharmacology 2013, 38: 2613-2622. PMID: 23856634, PMCID: PMC3828532, DOI: 10.1038/npp.2013.170.Peer-Reviewed Original ResearchConceptsNMDA-Rs
2012
NMDA receptor function in large-scale anticorrelated neural systems with implications for cognition and schizophrenia
Anticevic A, Gancsos M, Murray JD, Repovs G, Driesen NR, Ennis DJ, Niciu MJ, Morgan PT, Surti TS, Bloch MH, Ramani R, Smith MA, Wang XJ, Krystal JH, Corlett PR. NMDA receptor function in large-scale anticorrelated neural systems with implications for cognition and schizophrenia. Proceedings Of The National Academy Of Sciences Of The United States Of America 2012, 109: 16720-16725. PMID: 23012427, PMCID: PMC3478611, DOI: 10.1073/pnas.1208494109.Peer-Reviewed Original ResearchMeSH KeywordsAdultAlgorithmsBrainCognitionDouble-Blind MethodExcitatory Amino Acid AntagonistsFemaleHumansInfusions, IntravenousKetamineMagnetic Resonance ImagingMaleMemoryModels, NeurologicalPattern Recognition, VisualPsychomotor PerformanceReceptors, N-Methyl-D-AspartateSchizophreniaSynaptic TransmissionYoung AdultConceptsNeural systemsLarge-scale brain systemsTask-dependent activationN-methyl-D-aspartate receptorsRealistic computational modelingSevere neuropsychiatric illnessNMDA glutamate receptor antagonistGlutamate receptor antagonistsBrain systemsNMDA receptor functionTask performanceMultiple interacting regionsCognitionCortical disinhibitionGlutamatergic neurotransmissionReceptor antagonistCortical computationGlutamate's roleReciprocal relationshipNeuropsychiatric illnessLocal circuitsReceptor functionSchizophreniaPresent findingsComputational modelingGuanfacine effects on stress, drug craving and prefrontal activation in cocaine dependent individuals: preliminary findings
Fox HC, Seo D, Tuit K, Hansen J, Kimmerling A, Morgan PT, Sinha R. Guanfacine effects on stress, drug craving and prefrontal activation in cocaine dependent individuals: preliminary findings. Journal Of Psychopharmacology 2012, 26: 958-972. PMID: 22234929, PMCID: PMC3694403, DOI: 10.1177/0269881111430746.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic alpha-2 Receptor AgonistsAdultCocaine-Related DisordersCombined Modality TherapyConnecticutDiagnostic and Statistical Manual of Mental DisordersDose-Response Relationship, DrugDouble-Blind MethodFemaleGuanfacineHumansImagery, PsychotherapyMagnetic Resonance ImagingMaleMiddle AgedNeuronsPilot ProjectsPrefrontal CortexStress, PsychologicalSubstance Withdrawal SyndromeConceptsCocaine-dependent individualsPrefrontal activityDrug cravingFunctional magnetic resonance imaging sessionDrug cue-induced cravingTreatment-seeking cocaine dependent individualsCue-induced drug cravingDependent individualsMagnetic resonance imaging sessionLateral prefrontal activityCue-induced cravingDrug cue exposureGuanfacine's effectsDrug cuesSubjective cravingImagery conditionPrefrontal activationCue exposurePhysiological arousalCognitive challengesBrain responsesAgonist guanfacineNicotine cravingGuanfacine groupCraving
2010
Biological markers of the effects of intravenous methylphenidate on improving inhibitory control in cocaine-dependent patients
Li CS, Morgan PT, Matuskey D, Abdelghany O, Luo X, Chang JL, Rounsaville BJ, Ding YS, Malison RT. Biological markers of the effects of intravenous methylphenidate on improving inhibitory control in cocaine-dependent patients. Proceedings Of The National Academy Of Sciences Of The United States Of America 2010, 107: 14455-14459. PMID: 20660731, PMCID: PMC2922598, DOI: 10.1073/pnas.1002467107.Peer-Reviewed Original ResearchMeSH KeywordsAdultBiomarkersBrain MappingCocaine-Related DisordersFemaleFrontal LobeHumansImpulsive BehaviorInhibition, PsychologicalMagnetic Resonance ImagingMaleMethylphenidateReaction TimeConceptsMiddle frontal cortexStop-signal reaction timeCocaine-dependent patientsWhole-brain linear regressionLonger stop-signal reaction timesFunctional MRI studyInhibitory controlInhibition-related activationBlood pressureIntravenous methylphenidatePeripheral biomarkersSignal reaction timeFrontal cortexStop-signal taskIndividualized treatmentHealthy individualsMRI studiesVentromedial prefrontal cortexSpecific neural mechanismsCocaine dependenceBiological markersPrefrontal cortexPatientsMethylphenidate responseSignal task