2009
NMDA Receptor Antagonist Ketamine Produces Opposing Effects on Resting and Task-Related Brain Activation During Working Memory in Humans
Driesen N, McCarthy G, Bhagwagar Z, Calhoun V, D'Souza D, Holub J, Morgan P, Krystal J. NMDA Receptor Antagonist Ketamine Produces Opposing Effects on Resting and Task-Related Brain Activation During Working Memory in Humans. NeuroImage 2009, 47: s145. DOI: 10.1016/s1053-8119(09)71458-2.Peer-Reviewed Original ResearchBrain activationNMDA receptor antagonist ketamine
2008
Impairment of Working Memory Maintenance and Response in Schizophrenia: Functional Magnetic Resonance Imaging Evidence
Driesen NR, Leung HC, Calhoun VD, Constable RT, Gueorguieva R, Hoffman R, Skudlarski P, Goldman-Rakic PS, Krystal JH. Impairment of Working Memory Maintenance and Response in Schizophrenia: Functional Magnetic Resonance Imaging Evidence. Biological Psychiatry 2008, 64: 1026-1034. PMID: 18823880, PMCID: PMC2650279, DOI: 10.1016/j.biopsych.2008.07.029.Peer-Reviewed Original ResearchConceptsMemory taskPrefrontal activityMemory maintenanceBrain activationFunctional Magnetic Resonance Imaging EvidenceWorking Memory MaintenanceCognitive impairmentHealthy comparison participantsPrefrontal cortical activityFunctional magnetic resonanceMemory loadComparison participantsTask accuracyDistinct neurobiologyCortical activityHealthy participantsBasic research insightsImaging EvidenceMemoryCortical deficitsCortical functionPoor performanceTaskSchizophreniaResponse phase