Zobrazeno 1 - 10
of 20
pro vyhledávání: '"El-Mehdi Meftah"'
Autor:
Yin Nan Huang, El-Mehdi Meftah, Charlotte H. Pion, Jean-Marc Mac-Thiong, Julien Cohen-Adad, Dorothy Barthélemy
Publikováno v:
Spinal cord series and cases. 8(1)
Study design Observational, cohort study. Objectives (1) Determine the feasibility and relevance of assessing corticospinal, sensory, and spinal pathways early after traumatic spinal cord injury (SCI) in a rehabilitation setting. (2) Validate whether
Autor:
François Tremblay, Anita Cybulska-Klosowicz, Stéphanie Bourgeon, El-Mehdi Meftah, C. Elaine Chapman, Wan Jiang
Publikováno v:
Journal of neurophysiology. 123(3)
This study compared the receptive field (RF) properties and firing rates of neurons in the cutaneous hand representation of primary somatosensory cortex (areas 3b, 1, and 2) of 9 awake, adult macaques that were intensively trained in a texture discri
Publikováno v:
Journal of Neurophysiology. 115:1767-1785
This study investigated the hypothesis that a simple intensive code, based on mean firing rate, could explain the cortical representation of subjective roughness intensity and its invariance with scanning speed. We examined the sensitivity of neurons
Publikováno v:
Experimental Brain Research. 197:235-244
Recently, we showed that tactile speed estimates are modified by the spatial parameters of moving raised-dot surfaces, specifically dot spacing but not dot disposition (regular, irregular) or density. The purpose of this study was to determine the ex
Publikováno v:
Journal of Neurophysiology. 99:1422-1434
A major challenge for the brain is to extract precise information about the attributes of tactile stimuli from signals that co-vary with multiple parameters, e.g., speed and texture in the case of scanning movements. We determined the ability of huma
Publikováno v:
Journal of neurophysiology. 115(4)
Anodal transcranial direct current stimulation (a-tDCS) of primary somatosensory cortex (S1) has been shown to enhance tactile spatial acuity, but there is little information as to the underlying neuronal mechanisms. We examined vibrotactile percepti
Publikováno v:
Journal of Neurophysiology. 88:3133-3149
The role of attention in modulating tactile sensitivity in primary (SI) and secondary somatosensory cortex (SII) was addressed using a cross-modal manipulation of attention, somatosensory versus visual. Two adult monkeys ( Macaca mulatta) were traine
Publikováno v:
Journal of neurophysiology. 110(7)
Moving stimuli activate all of the mechanoreceptive afferents involved in discriminative touch, but their signals covary with several parameters, including texture. Despite this, the brain extracts precise information about tactile speed, and humans
Publikováno v:
Journal of neurophysiology. 109(5)
There are conflicting reports as to whether the shape of the psychometric relation between perceived roughness and tactile element spacing [spatial period (SP)] follows an inverted U-shape or a monotonic linear increase. This is a critical issue beca
Autor:
C. Elaine Chapman, Mélissa Raby, El-Mehdi Meftah, Marie-Line Lemieux, Anita Cybulska-Klosowicz
Publikováno v:
Experimental brain research. 210(2)
This study addressed the paradoxical observation that movement is essential for tactile exploration, and yet is accompanied by movement-related gating or suppression of tactile detection. Knowing that tactile gating covaries with the speed of movemen