Self-regulation treatment of post-polio cold limb.
Biofeedback Self Regul. 1986 Jun ;11(2):157-61. PMID: 3567235
T F Dietvorst, M K Eulberg
Decreased limb temperature in the affected limb is one of the aftereffects of poliomyelitis. The decrease in limb temperature can be painful as well as subjectively unpleasant. A search of the current literature failed to reveal a cost-effective treatment for post-polio cold limbs. Since thermal biofeedback and other physiologic self-regulatory therapies have been shown to be effective in increasing peripheral blood flow in a number of disorders, they were used in the treatment of a patient with a post-polio cold limb. The patient showed foot warming during therapy sessions. This effect generalized to situations outside the therapy environment. The patient's self-report also indicated treatment to be successful. Replication and studies of the warming and cooling mechanism are suggested.
Article Published Date : May 31, 1986
The biology of skin wetness perception and its implications in manual function and for reproducing complex somatosensory signals in neuroprosthetics.
J Neurophysiol. 2017 Apr 01;117(4):1761-1775
Authors: Filingeri D, Ackerley R
Our perception of skin wetness is generated readily, yet humans have no known receptor (hygroreceptor) to signal this directly. It is easy to imagine the sensation of water running over our hands or the feel of rain on our skin. The synthetic sensation of wetness is thought to be produced from a combination of specific skin thermal and tactile inputs, registered through thermoreceptors and mechanoreceptors, respectively. The present review explores how thermal and tactile afference from the periphery can generate the percept of wetness centrally. We propose that the main signals include information about skin cooling, signaled primarily by thinly myelinated thermoreceptors, and rapid changes in touch, through fast-conducting, myelinated mechanoreceptors. Potential central sites for integration of these signals, and thus the perception of skin wetness, include the primary and secondary somatosensory cortices and the insula cortex. The interactions underlying these processes can also be modeled to aid in understanding and engineering the mechanisms. Furthermore, we discuss the role that sensing wetness could play in precision grip and the dexterous manipulation of objects. We expand on these lines of inquiry to the application of the knowledge in designing and creating skin sensory feedback in prosthetics. The addition of real-time, complex sensory signals would mark a significant advance in the use and incorporation of prosthetic body parts for amputees in everyday life.NEW & NOTEWORTHY Little is known about the underlying mechanisms that generate the perception of skin wetness. Humans have no specific hygroreceptor, and thus temperature and touch information combine to produce wetness sensations. The present review covers the potential mechanisms leading to the perception of wetness, both peripherally and centrally, along with their implications for manual function. These insights are relevant to inform the design of neuroengineering interfaces, such as sensory prostheses for amputees.
PMID: 28123008 [PubMed - indexed for MEDLINE]