Mechanical polarization in the air-current sensory hair of a cricket

We examined the mechanical anisotropy of the basement spring which underlies the directional sensitivity of the cercal filiform hair of the cricket (Gryllus bimaculatus). Spring stiffness varied with the direction of hair deflection. The anisotropic ratios were 8 for short hairs and 4 for long ones, whereas the absolute values of spring stiffness varied 100-fold with hair length.

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