2007
Neural Correlates of Impulse Control During Stop Signal Inhibition in Cocaine-Dependent Men
Li CS, Huang C, Yan P, Bhagwagar Z, Milivojevic V, Sinha R. Neural Correlates of Impulse Control During Stop Signal Inhibition in Cocaine-Dependent Men. Neuropsychopharmacology 2007, 33: 1798-1806. PMID: 17895916, PMCID: PMC2731999, DOI: 10.1038/sj.npp.1301568.Peer-Reviewed Original ResearchConceptsRostral anterior cingulate cortexCocaine-dependent menFunctional magnetic resonance imagingCocaine dependenceResponse inhibitionNeural correlatesHealthy control subjectsRisk of relapsePre-supplementary motor areaSubstance use disordersAnterior cingulate cortexImpulse controlSignal inhibitionMagnetic resonance imagingUseful neural markersStop-signal inhibitionRelative hypoactivationMale patientsControl subjectsSignal reaction timeMotor areaYears of educationUse disordersCingulate cortexResonance imaging
2006
Alexithymia and stress-induced brain activation in cocaine-dependent men and women.
Li CS, Sinha R. Alexithymia and stress-induced brain activation in cocaine-dependent men and women. Journal Of Psychiatry And Neuroscience 2006, 31: 115-21. PMID: 16575427, PMCID: PMC1413961.Peer-Reviewed Original ResearchConceptsToronto Alexithymia ScaleFrontal cortexTAS scoresScript-guided imageryAbstinent cocaine-dependent subjectsBilateral temporal cortexFunctional magnetic resonanceStress-induced brain activationProcessing of stressMiddle frontal cortexCocaine-dependent individualsRight frontal cortexCocaine-dependent menCocaine-dependent patientsNeutral imageryNeural processingBrain activationMale cocaine usersStressful situationsCocaine-dependent subjectsRight amygdalaAlexithymic featuresAlexithymia ScaleTemporal cortexSubcortical activation
2005
Neuroimaging study of sex differences in the neuropathology of cocaine abuse
Li CS, Kemp K, Milivojevic V, Sinha R. Neuroimaging study of sex differences in the neuropathology of cocaine abuse. Gender Medicine 2005, 2: 174-182. PMID: 16290890, DOI: 10.1016/s1550-8579(05)80046-4.Peer-Reviewed Original ResearchConceptsRegional brain activationBrain activationGreater activationBrain regionsSex differencesScript-guided imagerySubstance abusersCerebral perfusion deficitsBlood oxygenation level-dependent (BOLD) signalSame statistical thresholdCocaine-dependent menCue-induced cravingSuperior frontal gyrusLevel-dependent signalChronic cocaine useMale substance abusersSex-related factorsCocaine use disorderImportant sex differencesLeft uncusStress trialsClinical outcomesPerfusion deficitsRight claustrumPharmacologic challenge