ISSN:
1432-1017
Keywords:
Muscle
;
sound velocity
;
Brillouin scattering
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Physics
Notes:
Abstract The propagation of sound waves along relaxed single fibres of glycerinated rabbit psoas muscle has been observed using Brillouin scattering at frequencies up to 1.6 GHz. Two types of waves were observed: one with a velocity of 1508±7 m s−1, which is attributed to sound waves in intra-cellular saline, the other with a velocity of 912±25 m s−1, which is attributed to waves propagating along the protein filaments within individual sarcomeres. The latter sound velocity is much higher than that which has been reported by Stienen and Blangé (1985) for 50 μs tension transients, and the difference is attributed to the much higher stiffness of the protein filaments compared to the cross-bridges which determine the low-frequency elasticity of muscle fibres.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00257104
