The precision of retinotopy in primate visual cortex is commonly thought to result from highly ordered arrangement of fibres in the visual pathways. However, rigid point-to-point representation is hardly compatible with findings of a substantial reorganization of visual cortical maps after peripheral and central lesions. Such observations could be accounted for by divergence in the optic radiat...

In order to establish the effect of denervation on the structure of F-actin, polarisation of fluorescence of tryptophan residues of F-actin was determined in intact and denervated ghost muscle fibres (freed from myosin, troponin and tropomyosin) under various conditions. P\\, the polarisation parameter obtained by excitation of the fluorescence of tryptophan residues of F-actin by light polaris...

This paper describes the structure of the flagella, basal bodies, and some of the associated fibre systems in three genera of complex flagellates, Trichonympha, Pseudotrichonympha, and Holomastigotoides. Three groups of longitudinal fibres occur in a flagellum: two central and nine outer fibres such as have been repeatedly described in other material, and an additional set of nine smaller secon...

Suspension culture of single adult rat flexor digitorum brevis (FDB) muscle fibres in Vitrogen, a purified collagen, on tissue culture plastic or glass with mesh ring supports is superior to culture upon other substrates including collagen-, laminin-, or Vitrogen-coated tissue culture plastic. The Vitrogen gel-fibre mixture which attaches to glass or plastic provides at least 10 times more fibr...

Stress fibres and associated focal adhesions in cells constitute a contractile apparatus that regulates cell motility and contraction. Rho-kinase, an effector molecule of small GTPases, regulates non-muscle cell motility and contractility. Rho-kinase mediates the contraction of stress fibres in a Ca(2+)-independent manner, and is responsible for slower and more finely tuned contraction of stres...

Muscovy ducks display marked sexual dimorphism. The aim of our study was to analyse the consequences of dimorphism on muscular growth and, particularly, on the myofibrillar typology of the Pectoralis major and Sartorius muscles. In the Pectoralis muscle, we only found two fibre types: red fast-twitch oxido-glycolytic fibres (about 90%) and white fast-twitch glycolytic fibres. In the Sartorius, ...

A technique of block surface-staining and serial cinematography was modified to review serial sections of normal and dystrophic muscle from the Bar Harbor 129 Re strain of mice as a preliminary study of fibre splitting in dystrophic muscle. Using this technique, muscle fibres were reconstructed for up to 1·5 mm of their length without difficulty. Split fibres were identified only when the actua...

During the last decade, major efforts have been made to develop adequate and commercially viable processes for disintegrating cellulose fibres into their structural components. Homogenisation of cellulose fibres has been one of the principal applied procedures. Homogenisation has produced materials which may be inhomogeneous, containing fibres, fibres fragments, fibrillar fines and nanofibrils....

The paper demonstrates the preliminary research carried out on fibre meshed transducers for wearable computing applications, their constructions using electroconductive fibres via the route of modern electronic flatbed knitting technology. The paper reports the construction of resistive strain and displacement transducers using electroconductive polymeric fibres (resistivity of 10 cm) and metal...

The contractile characteristics, fatiguability, and ultrastructure were examined in individual twitch skeletal muscle fibres dissected from the iliofibularis muscle of frog Rana temporaria in order to define if an explicit correspondence exists between physiological and morphological features in different types of muscle fibres. Three groups of twitch fibres were distinguished in the study acco...