0000000000367903

AUTHOR

Guy Orban

showing 3 related works from this author

Grasp-specific motor resonance is influenced by the visibility of the observed actor

2016

AbstractMotor resonance is the modulation of M1 corticospinal excitability induced by observation of others' actions. Recent brain imaging studies have revealed that viewing videos of grasping actions led to a differential activation of the ventral premotor cortex depending on whether the entire person is viewed versus only their disembodied hand. Here we used transcranial magnetic stimulation (TMS) to examine motor evoked potentials (MEPs) in the first dorsal interosseous (FDI) and abductor digiti minimi (ADM) during observation of videos or static images in which a whole person or merely the hand was seen reaching and grasping a peanut (precision grip) or an apple (whole hand grasp). Part…

Research ReportAdultMalemedicine.medical_specialtyVisual perceptionAdolescentCognitive Neurosciencemedicine.medical_treatmentMovementClinical NeurologyExperimental and Cognitive PsychologyElectromyography050105 experimental psychologyVideosF5cPremotor cortex03 medical and health sciencesYoung Adult0302 clinical medicinePhysical medicine and rehabilitationHand strengthmedicineHumans0501 psychology and cognitive sciencesMuscle SkeletalMirror neuronmedicine.diagnostic_testHand StrengthElectromyography05 social sciencesGRASPMotor CortexAction observationEvoked Potentials MotorHandTranscranial Magnetic StimulationTranscranial magnetic stimulationNeuropsychology and Physiological Psychologymedicine.anatomical_structureMEPsNeurologyFemalePsychologyNeuroscienceMotor resonance030217 neurology & neurosurgeryPsychomotor PerformanceMotor cortexCortex; a Journal Devoted to the Study of the Nervous System and Behavior
researchProduct

Chronic neural probe for simultaneous recording of single-unit, multi-unit, and local field potential activity from multiple brain sites

2017

Drug resistant focal epilepsy can be treated by resecting the epileptic focus requiring a precise focus localisation using stereoelectroencephalography (SEEG) probes. As commercial SEEG probes offer only a limited spatial resolution, probes of higher channel count and design freedom enabling the incorporation of macro and microelectrodes would help increasing spatial resolution and thus open new perspectives for investigating mechanisms underlying focal epilepsy and its treatment. This work describes a new fabrication process for SEEG probes with materials and dimensions similar to clinical probes enabling recording single neuron activity at high spatial resolution.Polyimide is used as a bi…

focal epilepsyMaterials scienceFocus (geometry)SEEGBiomedical EngineeringPosterior parietal cortexFOS: Physical sciencesBiocompatible Materials02 engineering and technologyLocal field potentialchronic; depth neural probe; focal epilepsy; in vivo; SEEG; single unit activity; stereoelectroencephalography; Biomedical Engineering; Cellular and Molecular NeuroscienceStereoelectroencephalographystereoelectroencephalography03 medical and health sciencesCellular and Molecular Neuroscience0302 clinical medicineParietal LobeAnimalsMulti unitImage resolutionEvoked PotentialsNeuronsBrainElectroencephalography021001 nanoscience & nanotechnologyPhysics - Medical PhysicsMacaca mulattadepth neural probesingle unit activityElectrodes ImplantedchronicMicroelectrodein vivoQuantitative Biology - Neurons and CognitionFOS: Biological sciencesElectrodeFemaleNeurons and Cognition (q-bio.NC)Epilepsies PartialMedical Physics (physics.med-ph)0210 nano-technologyMicroelectrodes030217 neurology & neurosurgeryBiomedical engineering
researchProduct

Mapping effective connectivity between the frontal and contralateral primary motor cortex using dual-coil transcranial magnetic stimulation

2019

AbstractCytoarchitectonic, anatomical and electrophysiological studies have divided the frontal cortex into distinct functional subdivisions. Many of these subdivisions are anatomically connected with the contralateral primary motor cortex (M1); however, effective neurophysiological connectivity between these regions is not well defined in humans. Therefore, we aimed to use dual-coil transcranial magnetic stimulation (TMS) to map, with high spatial resolution, the effective connectivity between different frontal regions of the right hemisphere and contralateral M1 (cM1). TMS was applied over the left M1 alone (test pulse) or after a conditioning pulse was applied to different grid points co…

0303 health sciencesmedicine.medical_treatmentStimulationIndex fingerNeurophysiologyBiologyStatistical parametric mappingbehavioral disciplines and activitiesbody regionsTranscranial magnetic stimulationDorsolateral prefrontal cortex03 medical and health sciencesElectrophysiology0302 clinical medicinemedicine.anatomical_structuremedicinePrimary motor cortexNeuroscience030217 neurology & neurosurgery030304 developmental biology
researchProduct