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Skin strain patterns provide kinaesthetic information to the human central nervous system.
Umeå universitet, Medicinsk fakultet, Integrativ medicinsk biologi, Fysiologi.
Umeå universitet, Medicinsk fakultet, Integrativ medicinsk biologi, Fysiologi.
1995 (Engelska)Ingår i: Journal of Physiology, ISSN 0022-3751, E-ISSN 1469-7793, Vol. 487, nr 1, s. 243-251Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

1. We investigated the contribution of skin strain-related sensory inputs to movement perception and execution in five normal volunteers. The dorsal and palmar skin of the middle phalanx and the proximal interphalangeal (PIP) joint were manipulated to generate specific strain patterns in the proximal part of the index finger. To mask sensations directly related to this manipulation, skin and deeper tissues were blocked distal to the mid-portion of the proximal phalanx of the index finger by local anaesthesia. 2. Subjects were asked to move their normal right index finger either to mimic any perceived movements of the anaesthetized finger or to touch the tip of the insentient finger. 3. All subjects readily reproduced actual movements induced by the experimenter at the anaesthetized PIP joint. However, all subjects also generated flexion movements when the experimenter did not induce actual movement but produced deformations in the sentient proximal skin that were similar to those observed during actual PIP joint flexion. Likewise, the subjects indicated extension movement at the PIP joint when strain patterns corresponding to extension movements were induced. 4. In contrast, when the skin strain in the proximal part of the index finger was damped by a ring applied just proximal to the PIP joint within the anaesthetized skin area, both tested subjects failed to perceive PIP movements that actually took place.(ABSTRACT TRUNCATED AT 250 WORDS)

Ort, förlag, år, upplaga, sidor
1995. Vol. 487, nr 1, s. 243-251
Nationell ämneskategori
Medicin och hälsovetenskap
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URN: urn:nbn:se:umu:diva-32717PubMedID: 7473253OAI: oai:DiVA.org:umu-32717DiVA, id: diva2:305304
Tillgänglig från: 2010-03-23 Skapad: 2010-03-23 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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