Pacinian corpuscle

Structure of skin. Skin is composed of two layers, the epidermis and the dermis, separated by a basement membrane zone. Hypodermis, composed of adipose tissue, sweat glands, and pacinian corpuscles, is not part of the skin.45... 

Pacinian corpuscles Sensory receptors located deep in the epidermis that detect pressure and vibration. 

The simplest mechanoreceptors are morphologically undifferentiated nerve endings found in the connective tissue of skin. In many mechanoreceptors there have evolved accessory structures whose function is the efficient conversion of mechanical energy to electrical energy in the receptor cell. Examples are Pacinian corpuscles, in which the sensitive ending is covered by a cap-sule, muscle stretch receptors, in which the mechanically sensitive endings are associated with specialized muscle fibers, and the hair-like sensilla in the exoskeletons of arthropods (Figure 45). Elaborated accessory structures used to detect and analyze sound waves are found in the vertebrate middle and inner ear. ... 

Pacinian corpuscle blood capillary (pressure receptor)... 

Some receptors are sensitive to static energy levels other monitors the rate of change of stimulus energy, such as the Pacinian corpuscles, which are sensitive to vibration. 

Ultrastructure of sensory nerve endings in the human knee joints was studied by Halata et al., and three types of nerve endings were found free nerve endings (FNEs), Ruffini corpuscles, and Pacinian corpuscles [8]. FNEs in the joint capsule... 

Adams RM (1999) Locksmiths. In Adams RM (ed). Occupational skin disease, 3rd ed, W.B. Saunders Co, Philadelphia, p 687 Fraitag S, Gherardi R, Wechsler J (1994) Hyperplastic pacinian corpuscles an uncommonly encountered lesion of the hand. J Cutan Pathol 21 457-460... 

Eccrine sweat gland Pacinian corpuscle Cutaneous vascular plexus... 

The concepts of the selective stimulation method are illustrated in Figure 8.6. There are four types of mechanoreceptors embedded in human fingers FA I (Meissner s corpuscle), SA I (Merkel corpuscle), FA II (Pacinian corpuscle) and SAII (Ruffini endings) [18]. It is known that each receptor has temporal response characteristics for mechanical stimulation and causes subjective sensation corresponding to its responsive deformation. For example, SA I detects static deformations of skin and produces static pressure sensation, and FA I detects the velocity of the deformation and produces the sense of fluttering vibration. Tactile impression is an integrated sensation of these elementary sensations. To present tactile feel arbitrarily, stimuh applied to these receptors should be controlled selectively. 

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