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a.1.(Anat.) Of, pertaining to, or discovered by, Filippo Pacini (1812-1883), an Italian physician of the 19th century.
Pacinian corpuscles
small oval bodies terminating some of the minute branches of the sensory nerves in the skin of the fingers, mesentery, integument and other parts of the body; the corpuscula lamellosa; called also Vater's corpuscles and Vater-Pacini corpuscles. They are sensitive to pressure, and supposed to be tactile organs.
References in periodicals archive ?
Researchers found that mice lacking the proper version of a protein called c-Maf have deformed Pacinian corpuscles, the vibration detectors that surround mouse bones (normal corpuscles shown here ill a mouse's leg).
When you stroke your fingers over a surface, its structure triggers high-frequency vibrations in the finger, to which specific touch receptors, the Pacinian corpuscles, respond.
Since Pacinian corpuscles and Merkel disk receptors respond to vibration and light touch (or pressure) [24], this result may suggest that the distribution of these two kinds of receptors is denser on the ventral forearm.
11) One tumor demonstrated an association with clusters of Pacinian corpuscles with an S100 protein stain showing tumor cells in the outer layers of the corpuscles (Figure 3, c and d).
It's that feel of a switch going on and off that most people are looking for," said Mike Levin, an executive with haptics startup Pacinian.
The response is quite similar to the signal variation of the Pacinian corpuscle sensory receptor in the dermis and the output is characterized by the temporal differential property.
The tip of the trunk contains two kinds pressure-sensitive nerve endings Meissner's corpuscles that detect infrasonic vibrations, and Pacinian corpuscles that respond to vibrations with slightly higher frequencies.
The specific ligamentous sensory receptors found at the ankle joint are Ruffini endings and Pacinian corpuscles (Johansson et al 1991, Michelson and Hutchins 1995).
Deeper sensibility in the fingers is supplied by a rich nerve plexus in which, among many nerve endings, are >800 of the estimated 2000 Pacinian corpuscles in the whole body.
Similarly, reduced density of Pacinian corpuscles with aging is responsible for the decline in vibrotactile sensitivities of older adults [28].
Specialized sensors called Pacinian fibers, the tips of nerve fibers, detect only a select few of the vibrations--those right around 250 hertz--before sending the signal to the brain.