2013
The Impact of NMDA Receptor Blockade on Human Working Memory-Related Prefrontal Function and Connectivity
Driesen NR, McCarthy G, Bhagwagar Z, Bloch MH, Calhoun VD, D'Souza DC, Gueorguieva R, He G, Leung HC, Ramani R, Anticevic A, Suckow RF, Morgan PT, Krystal JH. The Impact of NMDA Receptor Blockade on Human Working Memory-Related Prefrontal Function and Connectivity. Neuropsychopharmacology 2013, 38: 2613-2622. PMID: 23856634, PMCID: PMC3828532, DOI: 10.1038/npp.2013.170.Peer-Reviewed Original ResearchConceptsNMDA-Rs
2007
Cortisol levels in relation to hippocampal sub-regions in subjects with first episode schizophrenia
Gunduz-Bruce H, Szeszko PR, Gueorguieva R, Ashtari M, Robinson DG, Kane JM, Bilder RM. Cortisol levels in relation to hippocampal sub-regions in subjects with first episode schizophrenia. Schizophrenia Research 2007, 94: 281-287. PMID: 17490857, DOI: 10.1016/j.schres.2007.03.025.Peer-Reviewed Original ResearchConceptsFirst-episode schizophreniaHippocampal volumeRegional hippocampal volumesCortisol levelsEpisode schizophreniaAnterior hippocampal volumeDiurnal salivary cortisol levelsSalivary cortisol levelsCoronal MR imagesHigher cortisol levelsCushing's syndromeFirst admissionPatient groupHealthy controlsCortisol exposureHealthy adolescentsSignificant associationSchizophreniaVolumetric reductionCortisol measuresLarge-scale studiesGenetic factorsSchizophrenia sampleSyndromeCortisol
2005
Temporoparietal Transcranial Magnetic Stimulation for Auditory Hallucinations: Safety, Efficacy and Moderators in a Fifty Patient Sample
Hoffman RE, Gueorguieva R, Hawkins KA, Varanko M, Boutros NN, Wu YT, Carroll K, Krystal JH. Temporoparietal Transcranial Magnetic Stimulation for Auditory Hallucinations: Safety, Efficacy and Moderators in a Fifty Patient Sample. Biological Psychiatry 2005, 58: 97-104. PMID: 15936729, DOI: 10.1016/j.biopsych.2005.03.041.Peer-Reviewed Original ResearchConceptsRepetitive transcranial magnetic stimulationTranscranial magnetic stimulationAuditory hallucinationsSham stimulationMagnetic stimulationTemporoparietal repetitive transcranial magnetic stimulationClinical Global Impression ScaleGlobal Impression ScaleRight-handed patientsMotor thresholdImpression ScaleRTMS effectsNew patientsNeurocognitive impairmentHallucination frequencySchizoaffective disorderPatient samplesSignificant distressPatientsChange scoresHallucinationsPreliminary reportStimulationNeurobiological factorsIntervention
2003
Transcranial Magnetic Stimulation of Left Temporoparietal Cortex and Medication-Resistant Auditory Hallucinations
Hoffman RE, Hawkins KA, Gueorguieva R, Boutros NN, Rachid F, Carroll K, Krystal JH. Transcranial Magnetic Stimulation of Left Temporoparietal Cortex and Medication-Resistant Auditory Hallucinations. JAMA Psychiatry 2003, 60: 49-56. PMID: 12511172, DOI: 10.1001/archpsyc.60.1.49.Peer-Reviewed Original ResearchConceptsRepetitive transcranial magnetic stimulationMedication-resistant auditory hallucinationsTranscranial magnetic stimulationLeft temporoparietal cortexAuditory hallucinationsSham stimulationMagnetic stimulationTemporoparietal cortexOpen-label trialMotor thresholdAntipsychotic medicationSustained reductionBrain areasSchizoaffective disorderCortical activationPossible treatmentNeuropsychological impairmentNeuropsychological assessmentPatientsAdditional studiesCortexStimulationTrialsHallucinationsTreatment effects
2002
Lack of a therapeutic effect of a 2-week sub-threshold transcranial magnetic stimulation course for treatment-resistant depression
Boutros NN, Gueorguieva R, Hoffman RE, Oren DA, Feingold A, Berman RM. Lack of a therapeutic effect of a 2-week sub-threshold transcranial magnetic stimulation course for treatment-resistant depression. Psychiatry Research 2002, 113: 245-254. PMID: 12559481, DOI: 10.1016/s0165-1781(02)00267-6.Peer-Reviewed Original ResearchConceptsRepetitive transcranial magnetic stimulationTreatment-resistant depressed patientsDepressed patientsTherapeutic effectActive repetitive transcranial magnetic stimulationStimulation parametersTreatment-resistant depressionDouble-blind designTranscranial magnetic stimulationLeft prefrontal cortexSham groupMagnetic stimulationStimulation courseRTMS stimulationPatientsSystematic followThreshold stimulationPrefrontal cortexFollowPre-set criteriaSignificant differencesStimulationWork daysWeeksConsecutive work days