2023
Aberrant Hierarchical Prediction Errors Are Associated With Transition to Psychosis: A Computational Single-Trial Analysis of the Mismatch Negativity
Hauke D, Charlton C, Schmidt A, Griffiths J, Woods S, Ford J, Srihari V, Roth V, Diaconescu A, Mathalon D. Aberrant Hierarchical Prediction Errors Are Associated With Transition to Psychosis: A Computational Single-Trial Analysis of the Mismatch Negativity. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2023, 8: 1176-1185. PMID: 37536567, DOI: 10.1016/j.bpsc.2023.07.011.Peer-Reviewed Original ResearchConceptsPrecision-weighted prediction errorsHealthy control participantsCourse of schizophreniaCHR-P individualsLower-level precision-weighted prediction errorsControl participantsLow-level sensoryPredictive coding accountMismatch negativity paradigmHierarchical Gaussian FilterPrediction errorEarly psychosisSingle-trial analysisClinical high riskDouble deviantsMismatch negativityComputational mechanismsElectroencephalography amplitudeFuture psychosisComputational modelSchizophreniaPsychosisIndividualsParticipantsSensor space
2022
Illness Phase as a Key Assessment and Intervention Window for Psychosis
Kohler C, Wolf D, Abi-Dargham A, Anticevic A, Cho Y, Fonteneau C, Gil R, Girgis R, Gray D, Grinband J, Javitch J, Kantrowitz J, Krystal J, Lieberman J, Murray J, Ranganathan M, Santamauro N, Van Snellenberg J, Tamayo Z, Group T, D'Souza D, Srihari V, Gueorguieva R, Patel P, Forselius-Bielen K, Lu J, Butler A, Fram G, Afriyie-Agyemang Y, Selloni A, Cadavid L, Gomez-Luna S, Gupta A, Radhakrishnan R, Rashid A, Aker R, Abrahim P, Nia A, Surti T, Kegeles L, Carlson M, Goldberg T, Gangwisch J, Benedict E, Govil P, Brazis S, Mayer M, de la Garrigue N, Fallon N, Baumvoll T, Abeykoon S, Perlman G, Bobchin K, Elliott M, Schmidt L, Rush S, Port A, Heffernan Z, Laney N, Kantor J, Hohing T, Gur R, Gur R, Calkins M. Illness Phase as a Key Assessment and Intervention Window for Psychosis. Biological Psychiatry Global Open Science 2022, 3: 340-350. PMID: 37519466, PMCID: PMC10382701, DOI: 10.1016/j.bpsgos.2022.05.009.Peer-Reviewed Original ResearchIllness phasePotential critical windowsPhase-specific biomarkersDopaminergic abnormalitiesFunctional outcomeSpecialty careSymptom assessmentIllness stageChronic illnessClinical assessmentIllness trajectoryNeurophysiological biomarkersFunctional abnormalitiesClinical careEarly psychosisMemory dysfunctionPsychotic disordersTreatment targetsAllostatic adaptationIntervention windowClinical programsBrain developmentCritical windowDysfunctionIllness
2018
The duration of untreated psychosis: a phenomenological study
Kamens S, Davidson L, Hyun E, Jones N, Morawski J, Kurtz M, Pollard J, van Schalkwyk GI, Srihari V. The duration of untreated psychosis: a phenomenological study. Psychosis 2018, 10: 307-318. PMID: 31871485, PMCID: PMC6927331, DOI: 10.1080/17522439.2018.1524924.Peer-Reviewed Original ResearchUntreated psychosisYoung adultsEarly detection campaignsStandardized baseline assessmentRecent-onset psychosisPsychosocial risk factorsEarly intervention servicesMajority of participantsFunctional outcomeRisk factorsTreatment contactOnset psychosisPsychosis onsetEarly psychosisBaseline assessmentEarly interventionPsychosisEarly detectionIntervention servicesYoung adulthoodDetection campaignsYoung personPresent studyParticipantsAdults
2015
Too Late and Too Little: Narratives of Treatment Disconnect in Early Psychosis
van Schalkwyk GI, Davidson L, Srihari V. Too Late and Too Little: Narratives of Treatment Disconnect in Early Psychosis. Psychiatric Quarterly 2015, 86: 521-532. PMID: 25663602, PMCID: PMC5576358, DOI: 10.1007/s11126-015-9348-4.Peer-Reviewed Original ResearchConceptsFirst episode psychosis programLong-term outcomesSpecialized treatment servicesOnset of psychosisInitial contactSpecialized servicesYounger patientsSignificant morbidityPsychosis programPatient preferencesEarly treatmentEffective treatmentEarly psychosisPsychiatric careTreatment experienceTreatment prioritiesPsychotic disordersTreatment servicesPatientsInductive thematic analysisFurther treatmentTreatmentDisproportionate improvementBehavioral changesCritical period
2013
Deficient Suppression of Default Mode Regions during Working Memory in Individuals with Early Psychosis and at Clinical High-Risk for Psychosis
Fryer SL, Woods SW, Kiehl KA, Calhoun VD, Pearlson GD, Roach BJ, Ford JM, Srihari VH, McGlashan TH, Mathalon DH. Deficient Suppression of Default Mode Regions during Working Memory in Individuals with Early Psychosis and at Clinical High-Risk for Psychosis. Frontiers In Psychiatry 2013, 4: 92. PMID: 24032017, PMCID: PMC3768116, DOI: 10.3389/fpsyt.2013.00092.Peer-Reviewed Original ResearchHealthy controlsDefault mode networkPsychosis onsetDMN regionsSeed-based connectivity analysisEarly schizophrenia patientsDMN suppressionClinical high riskLoad-dependent increaseMedial prefrontal cortexPosterior DMN nodesSuppression of activityPosterior parietal cortexResting-state fMRI dataDorsolateral prefrontal cortex activationDeficient suppressionESZ groupsESZ patientsPrefrontal cortex activationHigh riskEarly psychosisSchizophrenia patientsCHR individualsCortex activationLoad-dependent modulation
2011
Who Is Paying the Price? Loss of Health Insurance Coverage Early in Psychosis
Dodds TJ, Phutane VH, Stevens BJ, Woods SW, Sernyak MJ, Srihari VH. Who Is Paying the Price? Loss of Health Insurance Coverage Early in Psychosis. Psychiatric Services 2011, 62: 878-881. PMID: 21807825, PMCID: PMC4469900, DOI: 10.1176/ps.62.8.pss6208_0878.Peer-Reviewed Original ResearchConceptsHealth insurance coverageInsurance coverageConnecticut Mental Health CenterClinical chart reviewEarly psychosis patientsLong-term outcomesContinuity of careMental health centersPeriod of illnessChart reviewInsurance statusHealth centersEarly psychosisSpecialty servicesClinician reportsPrivate insurancePublic insuranceSpecialized treatmentPsychosisHealth insuranceMonthsOne-thirdParticipantsInsurancePatients
2009
Cognitive Behavior Therapy for Early Psychosis: A Comprehensive Review of Individual vs. Group Treatment Studies
Saksa JR, Cohen SJ, Srihari VH, Woods SW. Cognitive Behavior Therapy for Early Psychosis: A Comprehensive Review of Individual vs. Group Treatment Studies. International Journal Of Group Psychotherapy 2009, 59: 357-383. PMID: 19548785, DOI: 10.1521/ijgp.2009.59.3.357.Peer-Reviewed Original ResearchConceptsGroup cognitive behavior therapyCognitive behavior therapyEarly psychosisEarly casesModest treatment benefitsGroup of patientsBehavior therapyYounger patientsGroup treatment studyTreatment benefitPatient uncertaintyEffective modalityTreatment studiesPsychosisPatientsTherapyOutcomesRecent studiesCurrent studyIllnessComprehensive review