Publications by authors named "Yekta Ansari"
Article Synopsis
- - The study investigated whether personalized strengthening exercises, informed by biomarkers from transcranial magnetic stimulation (TMS), could improve outcomes for individuals with upper limb weakness after a stroke.
- - 90 adults were recruited and divided into three training intensity groups based on their motor evoked potentials (MEPs), with exercises tailored to their specific strength levels for four weeks.
- - Results showed that while participants in all groups improved in terms of motor function and strength, the addition of anodal transcranial direct current stimulation (tDCS) did not enhance the exercise effects as expected.
Objective: To report on neurophysiological outcomes derived from transcranial magnetic stimulation (TMS) following autologous mesenchymal stem cells (aMSCs) therapy in patients with multiple sclerosis (MS).
Methods: 20 adults with confirmed MS were recruited to participate in a phase II randomized control trial to assess the safety and potential benefits of aMSCs infusion. At Week 0, patients were randomly assigned to receive either aMSCs (n = 9) or a placebo infusion (n = 11).
Recently (Ansari et al., PeerJ 6:e6163, 2018a; Somatosens Mot Res 35:69-79, 2018b), we showed using transcranial magnetic stimulation (TMS) that focal application of innocuous thermal stimuli to the distal hand produced variable responses in terms of motor-evoked potential (MEP) suppression or enhancement. Here, we sought to investigate possible causes of this variability by examining circuits mediating sensorimotor integration and intra-cortical inhibition.
View Article and Find Full Text PDFBackground: Thermal stimulation has been proposed as a modality to facilitate motor recovery in neurological populations, such as stroke. Recently (Ansari, Remaud & Tremblay, 2018), we showed that application of cold or warm stimuli distally to a single digit produced a variable and short lasting modulation in corticomotor excitability. Here, our goal was to extend these observations to determine whether an increase in stimulation area could elicit more consistent modulation.
View Article and Find Full Text PDFPurpose: This study investigated the effects of thermal stimulation on corticomotor excitability with transcranial magnetic stimulation (TMS).
Material And Methods: Participants consisted of healthy young adults (n = 20) and seniors (n = 15). Each experimental session consisted of a baseline (BL) assessment, followed by a warming and a cooling protocol.