2021
Navigating the Benefits and Pitfalls of Online Psychiatric Data Collection
Quagan B, Woods SW, Powers AR. Navigating the Benefits and Pitfalls of Online Psychiatric Data Collection. JAMA Psychiatry 2021, 78: 1185-1186. PMID: 34431976, PMCID: PMC9205608, DOI: 10.1001/jamapsychiatry.2021.2315.Peer-Reviewed Original ResearchRacial and ethnic differences in perception of provider cultural competence among patients with depression and anxiety symptoms: a retrospective, population-based, cross-sectional analysis
Eken HN, Dee EC, Powers AR, Jordan A. Racial and ethnic differences in perception of provider cultural competence among patients with depression and anxiety symptoms: a retrospective, population-based, cross-sectional analysis. The Lancet Psychiatry 2021, 8: 957-968. PMID: 34563316, PMCID: PMC10688309, DOI: 10.1016/s2215-0366(21)00285-6.Peer-Reviewed Original ResearchConceptsProvider cultural competenceAdjusted odds ratioHispanic ethnicityDepression symptomsHealth statusMultivariable ordinal logistic regressionUS National Health Interview SurveyNational Health Interview SurveySelf-reported health statusOutcome variablesAlaskan NativesPresence of symptomsAssociation of raceCross-sectional studyHealth Interview SurveyMental health statusMental health providersAfrican AmericansCross-sectional analysisMean ageSubgroup analysisOrdinal logistic regressionOdds ratioPatients' viewsCultural competenceRegression dynamic causal modeling for resting‐state fMRI
Frässle S, Harrison SJ, Heinzle J, Clementz BA, Tamminga CA, Sweeney JA, Gershon ES, Keshavan MS, Pearlson GD, Powers A, Stephan KE. Regression dynamic causal modeling for resting‐state fMRI. Human Brain Mapping 2021, 42: 2159-2180. PMID: 33539625, PMCID: PMC8046067, DOI: 10.1002/hbm.25357.Peer-Reviewed Original Research
2020
Paracingulate 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 populations
2017
Lack of Diagnostic Pluripotentiality in Patients at Clinical High Risk for Psychosis: Specificity of Comorbidity Persistence and Search for Pluripotential Subgroups
Woods SW, Powers AR, Taylor JH, Davidson CA, Johannesen JK, Addington J, Perkins DO, Bearden CE, Cadenhead KS, Cannon TD, Cornblatt BA, Seidman LJ, Tsuang MT, Walker EF, McGlashan TH. Lack of Diagnostic Pluripotentiality in Patients at Clinical High Risk for Psychosis: Specificity of Comorbidity Persistence and Search for Pluripotential Subgroups. Schizophrenia Bulletin 2017, 44: 254-263. PMID: 29036402, PMCID: PMC5814797, DOI: 10.1093/schbul/sbx138.Peer-Reviewed Original ResearchConceptsCHR syndromeDiagnostic outcomesCHR subgroupsClinical high-risk syndromeHigh-risk syndromeOnset of psychosisClinical high riskPersistence of anxietyEmergent psychosisCHR patientsRisk syndromeObservational studyCHR casesHigh riskNonpsychotic disordersComorbid disordersComparison subjectsBipolar disorderDiagnostic InterviewSyndromeDSM-IVPatientsPsychosisDiagnostic specificityComparison groupPavlovian conditioning–induced hallucinations result from overweighting of perceptual priors
Powers AR, Mathys C, Corlett PR. Pavlovian conditioning–induced hallucinations result from overweighting of perceptual priors. Science 2017, 357: 596-600. PMID: 28798131, PMCID: PMC5802347, DOI: 10.1126/science.aan3458.Peer-Reviewed Original Research
2016
Varieties of Voice-Hearing: Psychics and the Psychosis Continuum
Powers AR, Kelley MS, Corlett PR. Varieties of Voice-Hearing: Psychics and the Psychosis Continuum. Schizophrenia Bulletin 2016, 43: 84-98. PMID: 28053132, PMCID: PMC5216860, DOI: 10.1093/schbul/sbw133.Peer-Reviewed Original ResearchConceptsPsychotic disordersSerious mental illnessVoice-hearing experiencesControl subjectsStudy populationProminent symptomContinuum of psychosisTreatment of voiceMental illnessProtective factorsPatientsNew study populationPsychosis continuumHelp-seeking groupDisordersHallucinatory experiencesVoice hearingSubjectsAuditory messagesVoice hearersPopulationSymptomsIllnessPsychosisDisease
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
2013
The effects of visual training on multisensory temporal processing
Stevenson RA, Wilson MM, Powers AR, Wallace MT. The effects of visual training on multisensory temporal processing. Experimental Brain Research 2013, 225: 479-489. PMID: 23307155, PMCID: PMC3606590, DOI: 10.1007/s00221-012-3387-y.Peer-Reviewed Original ResearchConceptsMultisensory integrationVisual trainingMultisensory temporal processesMultisensory temporal processingVisual perceptual trainingTemporal visual processingTemporal integration processPerceptual trainingTemporal trainingVisual processingTemporal processingSensory modalitiesTemporal synchronyMultisensoryHuman behaviorSensory inputTemporal offsetFeedback trainingTemporal processesTemporal precisionDifferent modalitiesCurrent studyTrainingTraining processProcessing
2012
Neural Correlates of Multisensory Perceptual Learning
Powers AR, Hevey MA, Wallace MT. Neural Correlates of Multisensory Perceptual Learning. Journal Of Neuroscience 2012, 32: 6263-6274. PMID: 22553032, PMCID: PMC3366559, DOI: 10.1523/jneurosci.6138-11.2012.Peer-Reviewed Original ResearchConceptsPosterior superior temporal sulcusNeural correlatesTraining paradigmMultisensory perceptual learningPerceptual training paradigmSuperior temporal sulcusSame environmental eventEffective connectivity analysisAudiovisual integrationPerceptual learningTemporal sulcusFMRI sessionsNeural substratesVisual stimuliBrain's abilitySame taskConnectivity analysisBOLD decreasesCessation of trainingVisual cortexEnvironmental eventsMultisensoryTemporal boundsTemporal windowTemporal structure
2010
Binding of sights and sounds: Age-related changes in multisensory temporal processing
Hillock AR, Powers AR, Wallace MT. Binding of sights and sounds: Age-related changes in multisensory temporal processing. Neuropsychologia 2010, 49: 461-467. PMID: 21134385, PMCID: PMC3140703, DOI: 10.1016/j.neuropsychologia.2010.11.041.Peer-Reviewed Original ResearchConceptsMultisensory temporal processingTemporal processingLong stimulus onset asynchroniesAudiovisual temporal perceptionMultisensory temporal functionAudiovisual temporal asynchronyStimulus onset asynchronyRelatedness of stimuliAge-related differencesSignificant group differencesMultisensory processesMultisensory stimuliMultisensory worldTemporal perceptionOnset asynchronyAuditory cuesAuditory stimuliVisual stimuliTemporal asynchronyAge-related changesGroup differencesExternal eventsStimuliTemporal functionAsynchrony