2009
Altered Impulse Control in Alcohol Dependence: Neural Measures of Stop Signal Performance
Li C, Luo X, Yan P, Bergquist K, Sinha R. Altered Impulse Control in Alcohol Dependence: Neural Measures of Stop Signal Performance. Alcohol Clinical And Experimental Research 2009, 33: 740-750. PMID: 19170662, PMCID: PMC2697053, DOI: 10.1111/j.1530-0277.2008.00891.x.Peer-Reviewed Original ResearchConceptsHealthy control subjectsFunctional magnetic resonance imagingAlcohol dependencePost-error behavioral adjustmentDorsolateral prefrontal cortexAlcohol urgesTrial reaction timePost-error slowingPrefrontal cortexLeft dorsolateral prefrontal cortexRight dorsolateral prefrontal cortexMagnetic resonance imagingImpulse controlStatistical parametric mappingStop errorAbstinent patientsControl subjectsNovel pharmacotherapiesSignal reaction timeTreatment outcomesFrontal cortexHC subjectsResonance imagingBehavioral adjustmentSubcortical structures
2008
Error-specific medial cortical and subcortical activity during the stop signal task: A functional magnetic resonance imaging study
Li C, Yan P, Chao H, Sinha R, Paliwal P, Constable RT, Zhang S, Lee T. Error-specific medial cortical and subcortical activity during the stop signal task: A functional magnetic resonance imaging study. Neuroscience 2008, 155: 1142-1151. PMID: 18674592, PMCID: PMC2605269, DOI: 10.1016/j.neuroscience.2008.06.062.Peer-Reviewed Original ResearchConceptsPost-error behavioral adjustmentPost-error slowingBehavioral adjustmentSignal taskFunctional magnetic resonance imaging studyConflict monitoring hypothesisError-related activityFunctional magnetic resonance imagingHigh-conflict trialsTrial reaction timeStop-signal taskMedial cortical regionsCortical brain regionsMagnetic resonance imaging studyResonance imaging studyElicit errorsBrain activationLess activationSubcortical activityCortical activityRetrosplenial cortexMonitoring hypothesisBehavioral outputBrain regionsCortical regions
2007
Greater activation of the “default” brain regions predicts stop signal errors
Li CS, Yan P, Bergquist KL, Sinha R. Greater activation of the “default” brain regions predicts stop signal errors. NeuroImage 2007, 38: 640-648. PMID: 17884586, PMCID: PMC2097963, DOI: 10.1016/j.neuroimage.2007.07.021.Peer-Reviewed Original ResearchConceptsSignal taskBehavioral adjustmentBrain regionsPost-error behavioral adjustmentCingulate cortexMidline brain regionsStop-signal taskPerigenual anterior cingulate cortexSignal detection theoryPosterior cingulate cortexAnterior cingulate cortexCortical brain regionsCognitive tasksStop successElicit errorsError processingNeural processesStop errorFMRI studyMental effortGreater activationPerformance errorsDetection theoryBilateral precuneusTask