2014
The Effects of Methylphenidate on Cerebral Activations to Salient Stimuli in Healthy Adults
Farr OM, Hu S, Matuskey D, Zhang S, Abdelghany O, Li CS. The Effects of Methylphenidate on Cerebral Activations to Salient Stimuli in Healthy Adults. Experimental And Clinical Psychopharmacology 2014, 22: 154-165. PMID: 24188171, PMCID: PMC4105943, DOI: 10.1037/a0034465.Peer-Reviewed Original ResearchConceptsStop-signal taskSalient stimuliSaliency processingFunctional MRIAttention deficit hyperactivity disorderRight inferior parietal cortexHigh motivational valueDeficit hyperactivity disorderEffects of methylphenidateInferior parietal cortexHealthy adultsNeural basisCognitive functioningMotivational valueAttention disordersHyperactivity disorderBilateral caudate headCatecholaminergic signalingMethylphenidate groupParietal cortexCerebral activationHigher activationCatecholaminergic treatmentPrimary motor cortexCerebral activity
2012
The influence of risky and conservative mental sets on cerebral activations of cognitive control
Winkler AD, Hu S, Li CS. The influence of risky and conservative mental sets on cerebral activations of cognitive control. International Journal Of Psychophysiology 2012, 87: 254-261. PMID: 22922525, PMCID: PMC3511622, DOI: 10.1016/j.ijpsycho.2012.08.010.Peer-Reviewed Original ResearchConceptsStop-signal taskMental setCognitive controlSignal taskCerebral activationPre-supplementary motor areaGo reaction timePrevious imaging workReaction timeReward uncertaintyCognitive functioningIndividual differencesStop errorGreater activationNeural responsesSalient eventsContextual effectsImaging workRetrosplenial cortexMore salientAdult participantsMotor areaSuccess trialsCerebral responsesRewardThe 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