It is well established that the head and eye velocity axes do not always align during compensatory vestibular slow phases. It has been shown that the eye velocity axis systematically tilts away from the head velocity axis in a manner that is dependent on eye-in-head position. The mechanisms responsible for producing these axis tilts are unclear. In this model-based study, we aimed to determine ...

A new belt transmission mechanism, having the function of no-slip driving, is described in the paper. It is composed of pulleys with carved rails and belt with rolled pins spaced out on both sides. Firstly, the trajectory curve is deduced along which pins embedded in the pulley. And then, parametric relationships are established, which are about center offsets of two pulleys, working radius of ...

249 words; text 6,646 words; 8 figures. Articles in PresS. J Neurophysiol (July 20, 2005). doi:10.1152/jn.01157.2004 Copyright © 2005 by the American Physiological Society. Demer and Clark Extraocular Muscle MRI During Ocular Counter-rolling JN-01157-2004.R2, page 2 Abstract The rectus extraocular muscle (EOM) pulleys constrain EOM paths. During visual fixation with head immobile, actively-cont...

OBJECTIVE To explore the mechanisms underlying the hypertropia associated with unilateral coronal synostosis. METHODS In 13 patients with unilateral coronal synostosis, we measured gaze-dependent binocular alignment before and after strabismus surgery, assessed the superior rectus muscle (SRM) pulley using computed tomography, and simulated posterior displacement of the trochlea and superolat...

PURPOSE The aim of this study was to elucidate whether intrasynovial corticosteroid injections for trigger digit reduced the volume of the tendon and pulley on high-resolution ultrasonography. METHODS Twenty-three digits of 20 patients with trigger digit were included. Each affected finger was graded clinically according to the following classification: grade I for pre-triggering, grade II fo...

BACKGROUND Trigger finger is most common in the ring finger, but the reason for this is not known. We hypothesized that the compliance of the A1 pulley might be one of the factors responsible for this phenomenon. The purpose of this study was therefore to compare the compliance of the normal A1 pulley of the thumb, index, middle, ring and little fingers using human cadavers. METHODS Eight nor...

PURPOSE Extraocular rectus muscle (EOM) pulleys are important determinants of orbital biomechanics in humans. In this study, the authors evaluated orbital connective tissue morphology, specifically characterizing rectus muscle pulleys, in the rat, a species with laterally placed eyes, afoveate vision, and a less complex visuomotor repertoire than primates. METHODS Adult rat orbits were paraff...

Pulley merupakan alat penerima atau pengubah tenaga putar dan momen gaya yang berhubung satu sama lain menggunakan v-belt, sedangkan transmisi mekanisme pengkonversi dari input menghasilkan output bervariasi. Torsi (momen gaya) kecepatan dipengaruhi oleh perbandingan gigi ukuran pulley. Ukuran pulley pada poros juga sangat mempengaruhi torsi RPM. Berdasarkan hal tersebut perlu dilakukan sebuah ...

Regarding van den Bedem, Schutte, van der Helm, and Simonsz: Mechanical properties and functional importance of pulley bands or ÔFaisseaux TendineuxÕ q In their paper entitled ''Mechanical properties and functional importance of pulley bands or ÔFaisseaux Tendi-neuxÕ, van den Bedem et al. (Vision Research 45 (2005) 2710–2714) argue that mechanical properties of connective tissues they define as...