2016
Hallucinations as Top-Down Effects on Perception
Powers AR, Kelley M, Corlett PR. Hallucinations as Top-Down Effects on Perception. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2016, 1: 393-400. PMID: 28626813, PMCID: PMC5469545, DOI: 10.1016/j.bpsc.2016.04.003.Peer-Reviewed Original ResearchContemporary cognitive neuroscienceCognitive science communityHigh-level cognitionPredictive coding modelHierarchical brain networksCognitive penetrationPerceptual priorsCognitive neurosciencePerceptual processesCognitive neuropsychiatryComputational neuroimagingModular viewMental organizationCoding modelBrain networksPerceptionMental illnessHierarchical modelCognitionNeuroscienceStimuliNeuroimagingHallucinationsNeuropsychiatryFindings
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