Archives for Sensology and Neurootology in Science and Practice
The variety of suggested treatments of nystagmus probably reflect its multiple pathogenetic mechanisms. Basic studies have shown that several neurotransmitters are involved in the ocular motor control, including gamma-aminobutyrric acid (GABA), acetylcholine and glycine. Recently, Stahl et al. (1995 ) investigated the effects of gabapentine on acquired pendular nystagmus in two patients with multiple sclerosis. […]
The diagnosis of patients in modern neuro-otogical centres has to include not only history and examination, but also objetive and quantitative tests. In this study stress the importance of a short but significant Many authors had reported different usefull studies in the evaluation of the nystagmus which may be spontaneous and induce, any one of […]
The possible relationship between inner ear and vasopressin (AVP, ADH) has been hypothesized since twenty years ago About ten years ago, in anaesthetized guinea pigs, we demonstrated that changes in the inner ear pressure modify plasma AVP (pAVP) level and AVP secretion with consequent changes in urine flow rate and osmolality : our experiment was […]
Whiplash injuries induce abnormalities in head-trunk control due both direct impact on the neck and indirect involvement of the central vestibular system. It is usually difficult to document specific abnormalities due to whiplash injuries. We stated that examinations aimed to document head-trunk coordination involvement could be useful in the functional assessment of vestibular disorders in […]
The balance system allows to our body to have a right relation with environment, this is probably due by different structures that collaborate to maintain the correct voluntary posture during erect position and the clear vision of the ambience; with regard to its synergetic purpose the balance system can therefore be schematised on the base […]
The vascular system and its influence under sympathetic and parasympathetic stimulations plays an essential role in neurophysiology of equilibrium.
Un nistagmo parossistico posizionale (Ny.P.P.) caratterizzato da un pattern oculomotorio compatibile con una deflessione ampullifuga della cupola del canale semicircolare posteriore (p.s.c.) e da caratteristiche temporali in accordo con il modello della canololitiasi labirintica , rappresenta attualmente l’elemento diagnostico di certezza della variante atipica ampullifuga della Vertigine Parossistica Posizionale Benigna (p.s.c.-B.P.P.V.). Tuttavia , in alcuni […]
THE FUNCTION OF THE VESTIBULO-OCULAR REFLEX (VOR) IS TO STABILIZE VISUAL IMAGES ON THE RETINA DURING HEAD MOVEMENTS, THEREBY ENSURING MAXIMAL VISUAL ACUITY. IT IS POSSIBLE TO OBTAIN RELIABLE AND QUANTITATIVE INFORMATION ON VESTIBULAR FUNCTION USING A MOTORISED CHAIR, WITH THE SUBJECT’S HEAD AND BODY FIXED. SUCH TESTING OF THE VOR HAS ENTAILED LOW-FREQUENCY ROTATION […]
Dai dati della Letteratura e dalle discussioni in merito alla relazione esistente tra apparato stomatognatico e postura, si può dedurre che una patologia a carico di una delle componenti del sistema stomatognatico può modificare l’equilibrio, influenzando le afferenze propriocettive degli altri distretti. I disordini cranio mandibolari possono causare disturbi funzionali della colonna cervicale. Durante la […]
Según nuestra experiencia el sistema vascular y su influencia bajo estímulos simpáticos y parasimpáticos juega un rol fundamental en la neurofisiología del equilibrio. Toda modificación del calibre arterial ya sea a nivel periférico o central bajo la dependencia del sistema simpático puede originar trastornos de nutrición a nivel de las células con modificación de sus […]
