2012
The effects of age on cerebral activations: internally versus externally driven processes
Hu S, Chao H, Winkler AD, Li CS. The effects of age on cerebral activations: internally versus externally driven processes. Frontiers In Aging Neuroscience 2012, 4: 4. PMID: 22536185, PMCID: PMC3334814, DOI: 10.3389/fnagi.2012.00004.Peer-Reviewed Original ResearchFunctional magnetic resonance imagingCerebral activationRegional brain activationAge-related decreaseCognitive processesPrepotent responsesPsychological constructsCognitive functioningSignal taskBrain activationGo trialsFMRI dataGo signalSE trialsEffect of ageImaging literatureYoung adultsStop signalHealthy adultsInfluence of ageSeeming inconsistencyAdultsMagnetic resonance imagingYears of ageFunctioning
2009
Activation of the pre-supplementary motor area but not inferior prefrontal cortex in association with short stop signal reaction time – an intra-subject analysis
Chao H, Luo X, Chang J, Li CS. Activation of the pre-supplementary motor area but not inferior prefrontal cortex in association with short stop signal reaction time – an intra-subject analysis. BMC Neuroscience 2009, 10: 75. PMID: 19602259, PMCID: PMC2719646, DOI: 10.1186/1471-2202-10-75.Peer-Reviewed Original ResearchConceptsStop-signal reaction timeRight inferior prefrontal cortexStop-signal taskPre-supplementary motor areaShorter stop-signal reaction timesInferior prefrontal cortexSignal reaction timePrefrontal cortexResponse inhibitionMotor areaMiddle/posterior cingulate cortexMotor response inhibitionInferior frontal cortexRegional brain activationStop-signal inhibitionLonger stop-signal reaction timesInhibitory motor controlPosterior cingulate cortexMedial prefrontal cortexReaction timeGreater activityAttentional monitoringNeural processesSignal taskBrain activation
2008
Neural Correlates of Speeded as Compared with Delayed Responses in a Stop Signal Task: An Indirect Analog of Risk Taking and Association with an Anxiety Trait
Li CS, Chao H, Lee TW. Neural Correlates of Speeded as Compared with Delayed Responses in a Stop Signal Task: An Indirect Analog of Risk Taking and Association with an Anxiety Trait. Cerebral Cortex 2008, 19: 839-848. PMID: 18678764, PMCID: PMC2722793, DOI: 10.1093/cercor/bhn132.Peer-Reviewed Original ResearchConceptsStop-signal taskSignal taskReaction timeTrial reaction timeStop-signal performanceFunctional magnetic resonanceMiddle frontal gyrusAdvantage of variabilityBilateral visual cortexPosterior cingulate cortexCognitive controlNeural correlatesNeural processesAmygdala activityTrait anxietyFrontal gyrusAnxiety traitsBehavioral paradigmsIndirect analogueCingulate cortexNeural analogRisk takingVisual cortexStop signalCurrent studyError-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