Pacinian corpuscle

Type of mechanoreceptor cell in hairless mammals

The Pacinian corpuscle, lamellar corpuscle or Vater-Pacini corpuscle is one of the four major types of cutaneous receptor a type of mechanoreceptor found in mammalian skin. This type of mechanoreceptor is found in both hairy, and hairless skin, organs, joints, and attached to the periosteum of bone. Pacinian corpuscles are primarily responsible for sensitivity to vibration, and deep pressure. A few are also sensitive to quasi-static or low frequency pressure stimuli. Most of them respond only to sudden disturbances and are especially sensitive to vibration of a few hundreds hertz. The vibrational role may be used for detecting surface texture, such as rough and smooth. Most of the Pacinian corpuscles act as rapidly adapting mechanoreceptors. Groups of corpuscles respond to pressure changes, such as on grasping or releasing an object.

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