Search results for "Mean diffusivity"

showing 3 items of 3 documents

Physical activity, aerobic fitness, and brain white matter : Their role for executive functions in adolescence

2020

Highlights • Aerobic fitness level, but not physical activity, is related to white matter properties in the brain. • The relation between physical activity and working memory is moderated by fractional anisotropy (FA) of the corpus callosum. • The FA of the corpus callosum and superior corona radiata moderates the relation between aerobic fitness and working memory.

Malephysical activitySpatial memoryDevelopmental psychologyExecutive functionsExecutive Function0302 clinical medicinenuoretCOGNITIVE CONTROLDWI diffusion-weighted imagingFitnessdiffuusiotensorikuvaus315 Sport and fitness sciencesPLASTICITYFA fractional anisotropyChildOriginal ResearchTBSS Tract-Based Spatial Statisticslcsh:QP351-495White matterCognitionExecutive functionsdiffusion tensor imagingexecutive functionsmurrosikäRD radial diffusivityINTEGRITYfitnessfyysinen kuntomedicine.anatomical_structureDiffusion tensor imagingFemalePsychologyaivotRVP rapid visual information processingwhite matterNeurovetenskaperAD axial diffusivityfractional anisotropyfyysinen aktiivisuusMulti-stage fitness testendocrine systemtoiminnanohjaus (psykologia)AdolescentDISTORTION CORRECTIONMVPA moderate-to-vigorous intensity physical activityPhysical activityTFCE threshold-free cluster enhancementWhite matter03 medical and health sciencesWORKING-MEMORY030225 pediatricsmedicineAerobic exerciseHumansExerciseAgedOBJECTIVE MEASURESMD mean diffusivityWorking memoryPhysical activityNeurosciencesPUBERTAL CHANGESvalkea aineCORPUS-CALLOSUMlcsh:Neurophysiology and neuropsychologySWM patial working memoryVOLUMEMICROSTRUCTURECANTAB Cambridge Neuropsychological Automated Test BatteryMRI magnetic resonance imaging030217 neurology & neurosurgeryFractional anisotropy
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The impact of isolated lesions on white-matter fiber tracts in multiple sclerosis patients

2015

Infratentorial lesions have been assigned an equivalent weighting to supratentorial plaques in the new McDonald criteria for diagnosing multiple sclerosis. Moreover, their presence has been shown to have prognostic value for disability. However, their spatial distribution and impact on network damage is not well understood. As a preliminary step in this study, we mapped the overall infratentorial lesion pattern in relapsing–remitting multiple sclerosis patients (N = 317) using MRI, finding the pons (lesion density, 14.25/cm3) and peduncles (13.38/cm3) to be predilection sites for infratentorial lesions. Based on these results, 118 fiber bundles from 15 healthy controls and a subgroup of 23 …

AdultPathologymedicine.medical_specialtyWallerian degenerationCognitive Neurosciencelcsh:Computer applications to medicine. Medical informaticsArticlelcsh:RC346-429LesionWhite matterMultiple sclerosisMultiple Sclerosis Relapsing-RemittingNerve FibersLSAF left superior arcuate fasciculusFractional anisotropymedicineHumansRadiology Nuclear Medicine and imagingFA fractional anisotropyNAWM normal-appearing white matterLD lesion densitylcsh:Neurology. Diseases of the nervous systemEAE experimental autoimmune encephalomyelitisMD mean diffusivitybusiness.industryMultiple sclerosisWhite matterMcDonald criteriaMiddle Agedmedicine.diseaseRD radial diffusivitymedicine.anatomical_structureDiffusion tensor imagingNeurologylcsh:R858-859.7Neurology (clinical)Brainstemmedicine.symptomFunction and Dysfunction of the Nervous SystembusinessBrainstemAD axial diffusivityDiffusion MRIBrain StemICP inferior cerebellar peduncleFractional anisotropyNeuroImage: Clinical
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Grey matter microstructural alterations in schizophrenia patients with treatment-resistant auditory verbal hallucinations.

2021

Treatment-resistant auditory verbal hallucinations (TRAVH) are a relatively prevalent and devastating symptom in patients with schizophrenia (SCZ). Even though their pathological mechanisms are poorly understood, they seem to differ from those underlying non-hallucinating SCZ.& nbsp; In this study, we characterise structural brain changes in SCZ patients with TRAVH. With respect to nonhallucinating patients and healthy controls, we studied macrostructural grey matter changes through cortical thickness and subcortical volumetric data. Additionally, we analysed microstructural differences across groups using intracortical and subcortical mean diffusivity data. This latter imaging metric has b…

Deep brain stimulationHallucinationsmedicine.medical_treatmentHippocampusAuditory hallucinationsGrey matterHippocampusCortical thickness03 medical and health sciences0302 clinical medicineMean diffusivityMedicineHumansIn patientClinical severityGray MatterTreatment resistantPathologicalBiological Psychiatrybusiness.industryBrainmedicine.diseaseMagnetic Resonance Imaging030227 psychiatryPsychiatry and Mental healthmedicine.anatomical_structureSchizophreniaTreatment-resistantSchizophreniabusinessNeuroscience030217 neurology & neurosurgeryJournal of psychiatric research
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