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
Saliency Processing and Obesity: A Preliminary Imaging Study of the Stop Signal Task
Hendrick OM, Luo X, Zhang S, Li C. Saliency Processing and Obesity: A Preliminary Imaging Study of the Stop Signal Task. Obesity 2012, 20: 1796-1802. PMID: 21720427, PMCID: PMC3653271, DOI: 10.1038/oby.2011.180.Peer-Reviewed Original ResearchConceptsStop-signal taskObese femalesBrain activationCognitive controlAltered cerebral functionSupplementary motor areaSignal taskRegional brain activationInferior parietal cortexSaliency processingCerebral functionLean femalesMotor areaFunctional magnetic resonance imagesParietal cortexSimilar behavioral performanceImaging studiesStop trialsPreliminary imaging studyObesityMagnetic resonance imagesTrialsGreater activationResonance imagesResponse inhibitionDecreased saliency processing as a neural measure of Barratt impulsivity in healthy adults
Farr OM, Hu S, Zhang S, Li CS. Decreased saliency processing as a neural measure of Barratt impulsivity in healthy adults. NeuroImage 2012, 63: 1070-1077. PMID: 22885245, PMCID: PMC3472158, DOI: 10.1016/j.neuroimage.2012.07.049.Peer-Reviewed Original ResearchConceptsStop-signal reaction timeStop-signal taskMiddle frontal cortexCognitive controlTrait impulsivityResponse inhibitionComponent processesSaliency processingBarratt impulsivityCognitive control functionsLeft dorsolateral prefrontal cortexPost-error slowingRegional brain activationDorsolateral prefrontal cortexSignal reaction timeYoung adult participantsBarratt Impulsivity ScaleNeural measuresError processingSignal taskBrain activationPsychophysiological interactionImpulsivity scoresBIS-11Impulsivity Scale