Joëlle Barthèlemy

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 Vestibular inputs tonically activate the antigravitative leg muscles during normal standing in humans, and visual information and proprioceptive inputs from the legs are very sensitive sensory loops for body sway control. This study investigated the postural control in a homogeneous population of 50 unilateral vestibular-deficient patients (Ménière’s(More)
In the present study we have investigated in the awake cat the response dynamics of vestibular nuclei neurons to visual or/and otolith stimulation elicited by vertical linear motion. Of the 53 units tested during sinusoidal motion at 0.05 Hz (9.1 cm/ s), 1 (1.9%) was responsive to the otolith input only, 13 (24.5%) were influenced by the visual input only(More)
1. In dogs with a 2-4 day old myocardial infarct and a predominantly sinus heart rhythm, we examine arrhythmogenic potencies of amrinone (0.5 mg/kg/min, 1 and 3 mg/kg) and milrinone (10 micrograms/kg/min, 75 and 100 micrograms/kg). 2. Amrinone and milrinone significantly reinduced ventricular ectopic beats on day 2 after coronary occlusion. 3. These effects(More)
Electromyographic activity of dorsal neck muscles elicited by sinusoidal vertical linear accelerations was studied in alert cats over a wide range of frequencies. Experiments were performed in headfixed cats and total darkness in order to activate selectively the otolith system. The polyunitary EMG activity was recorded from splenius capitis muscles in(More)
AIM To evaluate the long-term sealing ability of four contemporary endodontic sealers [Pulp Canal Sealer (PCS), AH-Plus, GuttaFlow and Epiphany] using a fluid filtration technique. METHODOLOGY The palatal roots of 40 human maxillary molar teeth were selected and the root canal was prepared using a crown-down technique (apical size 40, 6% taper). Roots(More)
Minor cross-over effects of unilateral muscle fatigue have been reported after isometric exercises. The present study re-examined this possibility after an exhaustive stretch-shortening cycle (SSC)-type exercise. Twenty-five subjects performed on a sledge apparatus a unilateral exhaustive rebound exercise involving mostly the triceps surae muscle group.(More)
Stretch–shortening cycle (SSC)-type fatigue is associated with acute and delayed functional defects, and appears to be a useful model to reveal the flexibility of both central and reflex adjustments to the contractile failure. SSC fatigue was induced in an experimental (EXP) group (n=6) on a sledge ergometer with an exhaustive rebound exercise with(More)
This study examined the perceived movement velocity induced by tendon vibrations during the delayed recovery phase of a stretch-shortening cycle (SSC)-type exercise characterized by 2 to 4 days of neuromuscular and proprioceptive impairments. Seven subjects performed until exhaustion series of unilateral rebounds involving mostly the triceps surae muscle(More)
This study investigated the acute and 2 days delayed influences of exhaustive stretch-shortening cycle exercise (SSC) on barefoot walking and running gait patterns. The SSC exercise was performed on a sledge apparatus, on which the subjects (N = 10) repeated until exhaustion intermittent series of 25 bilateral submaximal rebounds. Maximal drop-jumps and(More)