Search results for "Superior longitudinal fasciculus"

showing 4 items of 4 documents

Disruption of White Matter Integrity in Bipolar Depression as a Possible Structural Marker of Illness

2011

Background: Diffusion tensor imaging allows the study of integrity of white matter (WM) tracts. Literature suggests that WM integrity could be altered in bipolar disorder. Heterogeneity of brain imaging methods, the studied samples, and drug treatments make localization, nature, and severity of the WM abnormalities unclear. Methods: We applied tract-based spatial statistics of diffusion tensor imaging measures to compare fractional anisotropy (FA), mean, and radial diffusivity of the WM skeleton in a group of 40 consecutively admitted inpatients affected by a major depressive episode without psychotic features with a diagnosis of bipolar disorder type I and 21 unrelated healthy volunteers f…

AdultMalemedicine.medical_specialtyBipolar DisorderGenu of the corpus callosumImage ProcessingPopulationSpleniumCorpus callosumNerve Fibers MyelinatedWhite matter03 medical and health sciencesComputer-AssistedNerve Fibers0302 clinical medicineInternal medicineFractional anisotropyImage Processing Computer-AssistedmedicineHumanseducationBiological PsychiatryBrain Mappingeducation.field_of_studyAdult; Anisotropy; Bipolar Disorder; pathology; Brain Mapping; Brain; Diffusion Tensor Imaging; Female; Humans; Image Processing; Computer-Assisted; Male; Middle Aged; Nerve Fibers; MyelinatedSuperior longitudinal fasciculusBrainMiddle Aged030227 psychiatry3. Good healthDiffusion Tensor Imagingmedicine.anatomical_structureCardiologyMyelinatedAnisotropypathologyFemalePsychologyNeuroscience030217 neurology & neurosurgeryDiffusion MRIBiological Psychiatry
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Fluency and rule breaking behaviour in the frontal cortex

2020

Design (DF) and phonemic fluency tests (FAS; D-KEFS, 2001) are commonly used to investigate voluntary generation. Despite this, several important issues remain poorly investigated. In a sizeable sample of patients with focal left or right frontal lesion we established that voluntary generation performance cannot be accounted for by fluid intelligence. For DF we found patients performed significantly worse than healthy controls (HC) only on the switch condition. However, no significant difference between left and right frontal patients was found. In contrast, left frontal patients were significantly impaired when compared with HC and right frontal patients on FAS. These lateralization findin…

MaleLIFG Left Inferior Frontal GyrusRAPM Raven's Advanced Progressive MatricesIntelligenceLMFG Left Middle Frontal GyrusLF Left frontalAudiologyCorpus callosumCVA cerebrovascular accidentATR Anterior thalamic radiationExecutive FunctionBehavioral NeurosciencePFC prefrontal cortex0302 clinical medicineVerbal fluency testHC healthy controls10. No inequalityPrefrontal cortexLanguageFASRB Phonemic Fluency Rule Breakfluid intelligenceAged 80 and overfunctionsBrain Diseasesprefrontal cortexBrain Neoplasms05 social sciencesSuperior longitudinal fasciculusGNT Graded Naming TestMiddle AgedStrokemedicine.anatomical_structurePLSM Parcel-based Lesion Symptom MappingDF Design FluencyFluid Intelligence Parcel Based Lesion Symptom Mapping tract-wise statistical analysisFemalemedicine.symptomPsychologyAdultmedicine.medical_specialtyAdolescentCognitive NeuroscienceBrain AbscessExperimental and Cognitive PsychologyGrey matterrule break errorsArticle050105 experimental psychologyLateralization of brain functionLesionWhite matterYoung Adult03 medical and health sciencesexecutivestatistical analysismedicineHumans0501 psychology and cognitive sciencesAgedParcel based lesion symptom mapping tract-wise statistical analysisSettore M-PSI/02 - Psicobiologia E Psicologia Fisiologicaphonemic and design fluencyRL Right lesionparcel based lesion symptom mapping tractwiseLL left lesionIQ Intelligence QuotientVLSM Voxel-based lesion symptom mappingrule break errorNART National Adult Reading TestPsychomotor PerformanceTSA Tract-wise Statistical Analysis030217 neurology & neurosurgeryNeuropsychologia
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In vivo definition of parieto-motor connections involved in planning of grasping movements

2010

We combined bifocal transcranial magnetic stimulation (TMS) and diffusion tensor imaging (DTI) tractography to investigate in humans the contribution of connections originating from different parietal areas in planning of different reaching to grasp movements. TMS experiments revealed that in the left hemisphere functional connectivity between the primary motor cortex (M1) and a portion of the angular gyrus (AG) close to the caudal intraparietal sulcus was activated during early preparation of reaching and grasping movements only when the movement was made with a whole hand grasp (WHG) towards objects in contralateral space. In contrast, a different pathway, linking M1 with a part of the su…

Malegenetic structuresCognitive Neurosciencemedicine.medical_treatmentIntraparietal sulcusMotor Activitybehavioral disciplines and activitiesFunctional LateralityLateralization of brain functionNOSuperior longitudinal fasciculusAngular gyrusYoung AdultSupramarginal gyrusParietal LobeNeural PathwaysmedicineHumansYoung Adult; Diffusion Tensor Imaging; Humans; Hand; Motor Skills; Parietal Lobe; Frontal Lobe; Motor Cortex; Evoked Potentials Motor; Motor Activity; Neural Pathways; Psychomotor Performance; Transcranial Magnetic Stimulation; Female; Functional Laterality; MaleEvoked PotentialsConnectivitySettore M-PSI/02 - Psicobiologia E Psicologia Fisiologicamusculoskeletal neural and ocular physiologySuperior longitudinal fasciculusMotor CortexEvoked Potentials MotorHandTranscranial Magnetic StimulationFrontal LobeTranscranial magnetic stimulationTMS Connectivity Movement planning Superior longitudinal fasciculusTractography Transcranial magnetic stimulationDiffusion Tensor Imagingmedicine.anatomical_structureConnectivity; Movement planning; Superior longitudinal fasciculus; TMS; Tractography; Transcranial magnetic stimulation;Motornervous systemNeurologyMotor SkillsMovement planningTMSFemaleSettore MED/26 - NeurologiaPrimary motor cortexPsychologyTractographyNeurosciencePsychomotor Performancepsychological phenomena and processesTractographyNeuroImage
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The Ipsilateral Interhemispheric Transprecuneal Approach to the Atrium: Technical Considerations and Clinical Outcome on a Series of 7 Patients

2022

Surgical removal of tumors of the atrium is challenging due to their deep location, vascularization, and to their complex three-dimensional relationships with the highly functional white matter fibers of the region. To assess the feasibility and the effectiveness of the ipsilateral interhemispheric transprecuneus approach (IITA) for tumors involving the atrium and the posterior third of the temporal horn, a retrospective chart review of all patients who had undergone a surgical treatment for intraventricular tumors between January 2008 and January 2017 was performed, and the step-by-step approach is described. Ten patients affected by lesions of the atrium of the lateral ventricle underwent…

superior longitudinal fasciculuintraventricular tumor; interhemispheric approach; surgical management; atrium; superior longitudinal fasciculusGeneral Neuroscienceinterhemispheric approachsurgical managementatriumintraventricular tumorBrain Sciences
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