2012
Task-Related, Low-Frequency Task-Residual, and Resting State Activity in the Default Mode Network Brain Regions
Zhang S, Li CS. Task-Related, Low-Frequency Task-Residual, and Resting State Activity in the Default Mode Network Brain Regions. Frontiers In Psychology 2012, 3: 172. PMID: 22661964, PMCID: PMC3362743, DOI: 10.3389/fpsyg.2012.00172.Peer-Reviewed Original ResearchDefault mode networkPosterior cingulate cortexBlood oxygen level-dependent (BOLD) signalLow-frequency fluctuation (fALFF) signalsLevel-dependent signalStop-signal taskCingulate cortexBrain regionsBrain functionTask-related eventsFractional amplitudePrecuneusMode networkDMN regionsSignal taskDMN activityBrain activityCognitive performanceUseful indexLatter findingRestingDMN responseTask eventsTask conditionsFALFF
2011
Deficits in default mode network activity preceding error in cocaine dependent individuals
Bednarski SR, Zhang S, Hong KI, Sinha R, Rounsaville BJ, Li CS. Deficits in default mode network activity preceding error in cocaine dependent individuals. Drug And Alcohol Dependence 2011, 119: e51-e57. PMID: 21703783, PMCID: PMC3188675, DOI: 10.1016/j.drugalcdep.2011.05.026.Peer-Reviewed Original ResearchConceptsDefault mode networkCocaine dependenceCocaine useHealthy controlsTask-related cerebral activationBlood oxygenation level-dependent (BOLD) signalDemographics-matched healthy controlsGray matter volumeDefault mode network activityLevel-dependent signalChronic cocaine useRegional brain activationPosterior cingulate cortexStatistical parametric mappingCerebral functionBilateral precuneusCocaine-dependent individualsCerebral activationHealthy peopleMatter volumeCingulate cortexVentromedial prefrontal cortexBrain regionsCognitive deficitsCocaine misuse
2009
A neural measure of behavioral engagement: Task-residual low-frequency blood oxygenation level-dependent activity in the precuneus
Zhang S, Li CS. A neural measure of behavioral engagement: Task-residual low-frequency blood oxygenation level-dependent activity in the precuneus. NeuroImage 2009, 49: 1911-1918. PMID: 19761851, PMCID: PMC2791356, DOI: 10.1016/j.neuroimage.2009.09.004.Peer-Reviewed Original ResearchConceptsBlood oxygenation level-dependent activityRegional brain activationLevel-dependent activityTask engagementNeural measuresNeural processesBrain activationPosterior cingulate cortexAttentional monitoringResponse inhibitionHuman cognitionPrefrontal activationSignal taskGreater activationBOLD activityBehavioral engagementCingulate cortexPrecuneusBrain regionsLow-frequency fluctuationsFractional amplitudeBrain imagingSeed regionIndependent component analysisEngagement