2022
Measuring Voluntary Control Over Hallucinations: The Yale Control Over Perceptual Experiences (COPE) Scales
Mourgues C, Hammer A, Fisher V, Kafadar E, Quagan B, Bien C, Jaeger H, Thomas R, Sibarium E, Negreira AM, Sarisik E, Polisetty V, Eken H, Imtiaz A, Niles H, Sheldon AD, Powers AR. Measuring Voluntary Control Over Hallucinations: The Yale Control Over Perceptual Experiences (COPE) Scales. Schizophrenia Bulletin 2022, 48: 673-683. PMID: 35089361, PMCID: PMC9077437, DOI: 10.1093/schbul/sbab144.Peer-Reviewed Original ResearchConceptsAuditory verbal hallucinationsPositive clinical outcomesClinical outcomesPilot studyQuality of lifeConvergent validityFrequent auditory verbal hallucinationsExperiences ScaleClinical measuresConventional treatmentNovel interventionsSymptom severitySignificant distressClinical scalesComprehensive batteryPsychosis-spectrum diagnosisVerbal hallucinationsSound psychometric propertiesAVH contentVoluntary controlPsychometric propertiesHallucinationsControl ScaleValidation studyIntervention
2020
Voluntary control of auditory hallucinations: phenomenology to therapeutic implications
Swyer A, Powers AR. Voluntary control of auditory hallucinations: phenomenology to therapeutic implications. Schizophrenia 2020, 6: 19. PMID: 32753641, PMCID: PMC7403299, DOI: 10.1038/s41537-020-0106-8.Peer-Reviewed Original ResearchAuditory verbal hallucinationsNeural underpinningsVoice hearersField's current understandingCognitive constructsLittle systematic examinationVerbal hallucinationsConscious controlVoice hearingPsychosocial factorsAuditory hallucinationsVoluntary controlDevelopment of controlHallucinationsUnderpinningsHearerDegree of controlHealth statusSystematic examinationDistressFunctioningPerceptionRecent workRelationshipConstructsParacingulate Sulcus Length Is Shorter in Voice-Hearers Regardless of Need for Care
Powers AR, van Dyck LI, Garrison JR, Corlett PR. Paracingulate Sulcus Length Is Shorter in Voice-Hearers Regardless of Need for Care. Schizophrenia Bulletin 2020, 46: 1520-1523. PMID: 32432706, PMCID: PMC7707078, DOI: 10.1093/schbul/sbaa067.Peer-Reviewed Original ResearchConceptsAuditory verbal hallucinationsPsychotic disordersParacingulate sulcusT1-weighted structural MRI scansMedial prefrontal cortexStructural MRI scansClinical stateClinical careMRI scansAVH phenomenologyMental illnessClinical counterpartPrefrontal cortexClinical populationsDisordersVerbal hallucinationsHallucinationsIllnessPsychosisSulcus lengthCareGroups of participantsCurrent studyParticipantsNonclinical populationsS197. PAVLOVIAN CONDITIONED HALLUCINATIONS TASKS AND PSYCHOMETRIC THRESHOLDING IN ENRICHED ONLINE SAMPLE
Kafadar E, Lim C, Powers A. S197. PAVLOVIAN CONDITIONED HALLUCINATIONS TASKS AND PSYCHOMETRIC THRESHOLDING IN ENRICHED ONLINE SAMPLE. Schizophrenia Bulletin 2020, 46: s113-s114. PMCID: PMC7234405, DOI: 10.1093/schbul/sbaa031.263.Peer-Reviewed Original ResearchAuditory verbal hallucinationsEmergence of hallucinationsAuditory stimuliNeural signaturesVisual stimuliUnusual experiencesOnline sampleIncoming sensory evidencePavlovian conditioning taskPredictive coding frameworkSalient auditory stimuliPrior beliefsPerceptual inferenceSensory evidencePerceptual experienceConditioning taskBrain processesTask methodologyResponses of participantsSensory modalitiesVerbal hallucinationsPotential therapeutic targetTask consistHallucinatory experiencesDiagnosis of psychosis
2015
Ketamine-Induced Hallucinations
Powers A, Gancsos MG, Finn ES, Morgan PT, Corlett PR. Ketamine-Induced Hallucinations. Psychopathology 2015, 48: 376-385. PMID: 26361209, PMCID: PMC4684980, DOI: 10.1159/000438675.Peer-Reviewed Original ResearchConceptsAuditory verbal hallucinationsPerceptual inputVerbal hallucinationsPredictive coding modelDelusion-like ideasPerceptual disruptionsPerceptual expectationsPerceptual environmentCoding modelPhenomenological experienceSensory stimuliStimulation environmentAuditory hallucinationsHealthy participantsHallmark symptomFirst-episode psychosisMusical hallucinationsMRI scannerHallucinationsParticipantsMagnetic resonance imaging (MRI) scannerPsychosisAmotivationPerceptVivid hallucinations