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Recording Spatially Restricted Oscillations in the Hippocampus of Behaving Mice
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On the sound fields of infinitely long strips

Tim Mellow1, Leo Kärkkäinen

  • 1Nokia UK Ltd., Nokia House, Summit Avenue, Farnborough, Hants GU14 0NG, United Kingdom.

The Journal of the Acoustical Society of America
|July 27, 2011
PubMed

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Sound waves can be thought of as fluctuations in the pressure of a medium through which they propagate. Since the pressure also makes the medium's particles vibrate along its direction of motion, the waves can be modeled as the displacement of the medium's particles from their mean position.
Sound waves are longitudinal in most fluids because fluids cannot sustain any lateral pressure. In solids, however, shear forces help in propagating the disturbance in the lateral direction as well. Hence,...
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Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
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