2023
Brain activation during fear extinction recall in unmedicated patients with obsessive-compulsive disorder
Diniz J, Bazán P, Pereira C, Saraiva E, Ramos P, de Oliveira A, Reimer A, Hoexter M, Miguel E, Shavitt R, Batistuzzo M. Brain activation during fear extinction recall in unmedicated patients with obsessive-compulsive disorder. Psychiatry Research Neuroimaging 2023, 336: 111733. PMID: 37913655, DOI: 10.1016/j.pscychresns.2023.111733.Peer-Reviewed Original ResearchConceptsObsessive-compulsive disorderExtinction recallNeutral stimuliFear conditioningFear extinction recallBlood oxygenation level-dependent (BOLD) responseFear conditioning experimentSkin conductance reactivitySpecific brain activation patternsBrain activation patternsSkin conductance responsesLevel-dependent responsesEntire sampleDACC activationUnmedicated adult patientsFear responsesBrain activationAversive stimuliLingual gyrusUnmedicated samplesActivation patternsHealthy participantsRecallOpercular cortexInsular cortex
2019
No evidence of attentional bias toward angry faces in patients with obsessive-compulsive disorder
Skinazi M, de Mathis M, Cohab T, de Marco e Souza M, Shavitt R, Miguel E, Hoexter M, Batistuzzo M. No evidence of attentional bias toward angry faces in patients with obsessive-compulsive disorder. Brazilian Journal Of Psychiatry 2019, 41: 257-260. PMID: 30540026, PMCID: PMC6794136, DOI: 10.1590/1516-4446-2018-0130.Peer-Reviewed Original ResearchConceptsObsessive-compulsive disorderAttentional biasAngry facesAnxiety disorder patientsOCD patientsDifferent brain activation patternsFunctional neuroimaging protocolsSpecific OCD symptom dimensionsBrain activation patternsSymptom severityOCD symptom dimensionsDisorder patientsAB taskAB paradigmTransdiagnostic approachAB scoresIntelligence testingAnxiety disordersSymptom dimensionsActivation patternsNeuroimaging protocolPsychiatric comorbidityOne-sample t-testFaceDisorders