2023
Identifying psychosis subtypes use individualized covariance structural differential networks and multi-site clustering
Ji Y, Pearlson G, Bustillo J, Kochunov P, Turner J, Jiang R, Shao W, Zhang X, Fu Z, Li K, Liu Z, Xu X, Zhang D, Qi S, Calhoun V. Identifying psychosis subtypes use individualized covariance structural differential networks and multi-site clustering. Schizophrenia Research 2023, 264: 130-139. PMID: 38128344, DOI: 10.1016/j.schres.2023.12.013.Peer-Reviewed Original ResearchPsychosis subtypesSchizoaffective disorderBipolar disorderClinical phenotypeFirst-degree relativesTemporal-occipital cortexAmygdala-hippocampusClinical symptomsNeuroimaging featuresBipolar-Schizophrenia NetworkBrain alterationsHealthy controlsIntermediate Phenotypes (B-SNIP) consortiumOccipital cortexDecreased connectivitySubtypesStructural covarianceFractional amplitudeSubtype IILow-frequency fluctuationsNeurobiological heterogeneityGreater predispositionPsychosis spectrumGroup differencesDiagnostic classification
2018
9.3 PSYCHOSIS BIOTYPES VERSUS CLINICAL SYNDROMES THROUGH THE PRISM OF INTRINSIC NEURAL ACTIVITY
Clementz B, Pearlson G, Tamminga C, Sweeney J, Keshavan M. 9.3 PSYCHOSIS BIOTYPES VERSUS CLINICAL SYNDROMES THROUGH THE PRISM OF INTRINSIC NEURAL ACTIVITY. Schizophrenia Bulletin 2018, 44: s14-s14. PMCID: PMC5888365, DOI: 10.1093/schbul/sby014.031.Peer-Reviewed Original ResearchInter-trial intervalNeural activityIntrinsic neural activityPsychosis biotypesDSM diagnosesSingle-trial powerOngoing neural activityBipolar-Schizophrenia NetworkHealthy personsStimulus salienceNeural responsesNeural oscillationsB-SNIPNeurobiological similaritiesNeurophysiological modelFirst-degree relativesEEG measuresTreatment developmentSensory cortexTranslational research programClinical featuresDistinct physiological mechanismsHealthy groupPsychosis diagnosisPsychosis cases
2014
Multivariate analysis reveals genetic associations of the resting default mode network in psychotic bipolar disorder and schizophrenia
Meda SA, Ruaño G, Windemuth A, O’Neil K, Berwise C, Dunn SM, Boccaccio LE, Narayanan B, Kocherla M, Sprooten E, Keshavan MS, Tamminga CA, Sweeney JA, Clementz BA, Calhoun VD, Pearlson GD. Multivariate analysis reveals genetic associations of the resting default mode network in psychotic bipolar disorder and schizophrenia. Proceedings Of The National Academy Of Sciences Of The United States Of America 2014, 111: e2066-e2075. PMID: 24778245, PMCID: PMC4024891, DOI: 10.1073/pnas.1313093111.Peer-Reviewed Original ResearchConceptsDefault mode networkPsychotic bipolar disorderUnaffected first-degree relativesFirst-degree relativesSZ probandsResting-state functional MRI scansBipolar disorderMode networkFunctional MRI scansLong-term potentiationBrain's default mode networkGlobal enrichment analysisSubset of controlsPatient groupHealthy controlsDMN modulationDrug treatmentImmune responsePsychiatric disordersStudy subjectsMRI scansDMN connectivityMultivariate analysisFunctional connectivitySchizophrenia
2013
Resting State Electroencephalogram Oscillatory Abnormalities in Schizophrenia and Psychotic Bipolar Patients and Their Relatives from the Bipolar and Schizophrenia Network on Intermediate Phenotypes Study
Narayanan B, O’Neil K, Berwise C, Stevens MC, Calhoun VD, Clementz BA, Tamminga CA, Sweeney JA, Keshavan MS, Pearlson GD. Resting State Electroencephalogram Oscillatory Abnormalities in Schizophrenia and Psychotic Bipolar Patients and Their Relatives from the Bipolar and Schizophrenia Network on Intermediate Phenotypes Study. Biological Psychiatry 2013, 76: 456-465. PMID: 24439302, PMCID: PMC5045030, DOI: 10.1016/j.biopsych.2013.12.008.Peer-Reviewed Original ResearchConceptsFirst-degree relativesSlow beta activityFast alpha activitySZ probandsAlpha activityHealthy control subjectsBeta activityRelative risk estimatesFrontal delta activityEEG spectral activityModerate relative riskPsychotic bipolar patientsLow-frequency activityPsychotic bipolar probandsGroup independent component analysisControl subjectsRelative riskPost-hoc pair-wise comparisonsBipolar patientsGenetic predispositionIntermediate Phenotypes (B-SNIP) studyOscillatory abnormalitiesAnalysis of covarianceUnique endophenotypesBipolar disorder
1999
Lack of normal pattern of cerebral asymmetry in familial schizophrenic patients and their relatives — The Maudsley Family Study
Sharma T, Lancaster E, Sigmundsson T, Lewis S, Takei N, Gurling H, Barta P, Pearlson G, Murray R. Lack of normal pattern of cerebral asymmetry in familial schizophrenic patients and their relatives — The Maudsley Family Study. Schizophrenia Research 1999, 40: 111-120. PMID: 10593451, DOI: 10.1016/s0920-9964(99)00143-7.Peer-Reviewed Original ResearchConceptsSchizophrenic patientsOccipitoparietal regionsControl subjectsNormal patternCortical regionsLack of asymmetryFamilial schizophrenic patientsNormal cerebral asymmetryHealthy control subjectsFirst-degree relativesObligate carriersCerebral asymmetryRegional brain volumesUnrelated control subjectsDegree relativesRight sensorimotorNormal brain asymmetryBrain volumeMaudsley Family StudyPatientsOccipital asymmetryUnaffected relativesSchizophreniaBrain asymmetryNormal asymmetry
1997
The Maudsley Family Study 4. Normal planum temporale asymmetry in familial schizophrenia
Frangou S, Sharma T, Sigmundsson T, Barta P, Pearlson G, Murray R. The Maudsley Family Study 4. Normal planum temporale asymmetry in familial schizophrenia. The British Journal Of Psychiatry 1997, 170: 328-333. PMID: 9246250, DOI: 10.1192/bjp.170.4.328.Peer-Reviewed Original Research