2018
The effect of age and smoking on the hippocampus and memory in late middle age
Hawkins KA, Emadi N, Pearlson GD, Taylor B, Khadka S, King D, Blank K. The effect of age and smoking on the hippocampus and memory in late middle age. Hippocampus 2018, 28: 846-849. PMID: 30070068, DOI: 10.1002/hipo.23014.Peer-Reviewed Original ResearchConceptsSmoking historyHippocampal volumeHeavy smoking historyVascular risk factorsMiddle-aged subjectsMRI brain scanningAPOE e4 genotypeEffect of ageHeavy smokingHippocampal atrophyAlcohol historyRisk factorsE4 genotypeBrain scanningAPOE e4Neuropsychological assessment batteryHippocampus atrophyFemale subjectsGlobal cognitionMemory disordersData extractionMemory declineAssessment BatteryAgeSmokingRelationship between fMRI response during a nonverbal memory task and marijuana use in college students
Dager AD, Tice MR, Book GA, Tennen H, Raskin SA, Austad CS, Wood RM, Fallahi CR, Hawkins KA, Pearlson GD. Relationship between fMRI response during a nonverbal memory task and marijuana use in college students. Drug And Alcohol Dependence 2018, 188: 71-78. PMID: 29754029, PMCID: PMC6756147, DOI: 10.1016/j.drugalcdep.2018.03.025.Peer-Reviewed Original ResearchConceptsInferior frontal gyrusMJ usersFMRI responsesCollege studentsMemory taskMJ useFunctional magnetic resonance imaging (fMRI) responsesNonverbal memory tasksLower fMRI responseRecognition memoryNeural correlatesMagnetic resonance imaging responseFrontal gyrusVisual encodingRecognition taskOccupational functioningAge 18Memory dysfunctionMarijuana useAcademic performanceLeft hippocampusHippocampal dysfunctionGroup differencesRight hippocampusTaskLongitudinal Effects of Alcohol Consumption on the Hippocampus and Parahippocampus in College Students
Meda SA, Hawkins KA, Dager AD, Tennen H, Khadka S, Austad CS, Wood RM, Raskin S, Fallahi CR, Pearlson GD. Longitudinal Effects of Alcohol Consumption on the Hippocampus and Parahippocampus in College Students. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2018, 3: 610-617. PMID: 29680476, PMCID: PMC6062479, DOI: 10.1016/j.bpsc.2018.02.006.Peer-Reviewed Original ResearchConceptsAlcohol consumptionAlcohol use indicesHippocampal volume declineBrain magnetic resonanceLongitudinal effectsMemory scoresCalifornia Verbal Learning Test-IIAlcohol-induced memory blackoutsPara-hippocampusHippocampal volumeMemory blackoutsLongitudinal brainVolume declineDrinking indicesLongitudinal pipelinePoorer memory performancePoorer memory scoresHippocampusTest IICross-sectional literatureDrinking-related measuresBrainAlcohol researchMagnetic resonanceScores
2017
Multiple modality biomarker prediction of cognitive impairment in prospectively followed de novo Parkinson disease
Caspell-Garcia C, Simuni T, Tosun-Turgut D, Wu IW, Zhang Y, Nalls M, Singleton A, Shaw LA, Kang JH, Trojanowski JQ, Siderowf A, Coffey C, Lasch S, Aarsland D, Burn D, Chahine LM, Espay AJ, Foster ED, Hawkins KA, Litvan I, Richard I, Weintraub D, Initiative T. Multiple modality biomarker prediction of cognitive impairment in prospectively followed de novo Parkinson disease. PLOS ONE 2017, 12: e0175674. PMID: 28520803, PMCID: PMC5435130, DOI: 10.1371/journal.pone.0175674.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAmyloid beta-PeptidesBiomarkersBrain-Derived Neurotrophic FactorCatechol O-MethyltransferaseCognitive DysfunctionDiffusion Tensor ImagingDopamine Plasma Membrane Transport ProteinsFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedParkinson DiseasePolymorphism, Single NucleotideTau ProteinsTomography, Emission-Computed, Single-PhotonConceptsParkinson's diseaseCognitive impairmentDe novo Parkinson's diseaseDopamine transporter single-photon emissionLongitudinal mixed-effects modelsNovo Parkinson's diseaseYears of diseaseIdiopathic Parkinson's diseaseMovement Disorders CenterSingle nucleotide polymorphismsStructural magnetic resonance imagingClinical trial designLongitudinal structural MRIMagnetic resonance imagingSingle photon emissionDevelopment of treatmentsDiffusion tensor imagingBiomarker predictorsPlaque pathologyAmyloid pathologyDopamine deficiencyDopaminergic deficitUnivariate analysisBiomarker changesDisorders CenterHyperinsulinemia and elevated systolic blood pressure independently predict white matter hyperintensities with associated cognitive decrement in the middle-aged offspring of dementia patients
Hawkins KA, Emadi N, Pearlson GD, Winkler AM, Taylor B, Dulipsingh L, King D, Pittman B, Blank K. Hyperinsulinemia and elevated systolic blood pressure independently predict white matter hyperintensities with associated cognitive decrement in the middle-aged offspring of dementia patients. Metabolic Brain Disease 2017, 32: 849-857. PMID: 28255864, DOI: 10.1007/s11011-017-9980-9.Peer-Reviewed Original ResearchConceptsSystolic blood pressureWMH volumeVascular riskBlood pressurePlasma insulinDementia patientsMRI white matter hyperintensity volumeCognitive declineElevated systolic blood pressureSmall dense LDL-cholesterolWhite matter hyperintensity volumeH systolic BPIndependent risk factorDense LDL cholesterolCognitive decrementsBody mass indexWhite matter damageWhite matter hyperintensitiesApoE ε4 effectMiddle-aged offspringCerebral infarctsLifestyle modificationAggressive treatmentCerebrovascular damageLDL cholesterol
2012
Default mode network activity and white matter integrity in healthy middle-aged ApoE4 carriers
Patel KT, Stevens MC, Pearlson GD, Winkler AM, Hawkins KA, Skudlarski P, Bauer LO. Default mode network activity and white matter integrity in healthy middle-aged ApoE4 carriers. Brain Imaging And Behavior 2012, 7: 60-67. PMID: 23011382, DOI: 10.1007/s11682-012-9187-y.Peer-Reviewed Original ResearchMeSH KeywordsAdultAnxietyApolipoprotein E4BrainData Interpretation, StatisticalDepressionDiffusion Tensor ImagingDNAFemaleGenotypeHeterozygoteHumansImage Processing, Computer-AssistedIntelligence TestsMagnetic Resonance ImagingMaleMiddle AgedNerve NetNeuropsychological TestsPrincipal Component AnalysisSmokingWechsler ScalesConceptsAPOE4 carriersMagnetic resonance imagingAlzheimer's diseaseFractional anisotropyFunctional MRI abnormalitiesUnderlying neuropathologic changesWhite matter fractional anisotropyWhite matter changesDefault mode network connectivityDefault mode network activityGenetic risk factorsMode network connectivityMiddle-aged adultsWhite matter integrityMRI abnormalitiesNeuropathologic changesRisk factorsApolipoprotein EMatter changesCognitive declineResonance imagingOlder ageFunctional connectivityGenetic riskDMN regions
2007
Probing the Pathophysiology of Auditory/Verbal Hallucinations by Combining Functional Magnetic Resonance Imaging and Transcranial Magnetic Stimulation
Hoffman RE, Hampson M, Wu K, Anderson AW, Gore JC, Buchanan RJ, Constable RT, Hawkins KA, Sahay N, Krystal JH. Probing the Pathophysiology of Auditory/Verbal Hallucinations by Combining Functional Magnetic Resonance Imaging and Transcranial Magnetic Stimulation. Cerebral Cortex 2007, 17: 2733-2743. PMID: 17298962, PMCID: PMC2634833, DOI: 10.1093/cercor/bhl183.Peer-Reviewed Original ResearchMeSH KeywordsAdultAuditory PerceptionBrain MappingCerebral CortexFemaleHallucinationsHumansLanguageMagnetic Resonance ImagingMaleSchizophreniaTranscranial Magnetic StimulationConceptsRepetitive transcranial magnetic stimulationTranscranial magnetic stimulationFunctional magnetic resonance imagingMagnetic resonance imagingMagnetic stimulationSham stimulationTemporoparietal repetitive transcranial magnetic stimulationAuditory/verbal hallucinationsResonance imagingWernicke's areaVerbal hallucinationsBOLD signal time coursesBroca's areaSchizophrenia spectrum disordersGreater rateInferior frontal regionsPatientsTemporoparietal areasSignal time courseCortical sitesPathophysiologySupramarginal gyrusHallucinationsRight homologueStimulation