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Biophysical Journal 49: 281-289 (1986)
© 1986 the Biophysical Society

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Dynamic Structures through Microdifferential Holography

Mark Sharnoff, Lawrence P. Brehm and Richard W. Henry

ABSTRACT

The principles of microdifferential holography are developed primarily from nonmathematical argument, and the method's capabilities are compared with those of x-ray and optical diffraction. Microdifferential holography is very sensitive to small displacements of strongly scattering elements of a specimen whether or not they can be optically resolved. We present and interpret differential images of electrical activity of neurons and of contractile activity of isolated skeletal fibers. The latter confirm the suggestion of earlier work that the dynamic regions of contracting muscle are organized along myofibrillar segments rather than by sarcomeres.






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Copyright © 1986 by the Biophysical Society.