Lawrence Robinson

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OBJECTIVES To determine the characteristics of phantom limb sensation, phantom limb pain, and residual limb pain, and to evaluate pain-related disability associated with phantom limb pain. DESIGN Retrospective, cross-sectional survey. Six or more months after lower limb amputation, participants (n = 255) completed an amputation pain questionnaire that(More)
Two nearly equivalent models of multilevel security are presented. The use of multiple models permits the utilization of each model for purposes where that model is particularly advantageous. In this case, the more general model is simple and easily comprehensible, being more abstract, and is useful for exposition of the meaning of multilevel security. The(More)
OBJECTIVES A systematic review of somatosensory evoked potentials performed early after onset of coma, to predict the likelihood of nonawakening. The pooled results were evaluated for rates of awakening, confidence intervals, and the possibility of rare exceptions. DATA SOURCES Forty-one articles reporting somatosensory evoked potentials in comatose(More)
A method for describing and structuring programs that simplifies proofs of their correctness is presented. The method formally represents a program in terms of levels of abstraction, each level of which can be described by a self-contained nonprocedural specification. The proofs, like the programs, are structured by levels. Although only manual proofs are(More)
Twenty patients with vocal fold motion impairment were reviewed to correlate the findings of electromyography (EMG) and stroboscopy. The causes of motion impairment were idiopathic, previous surgery with recurrent laryngeal nerve injury, neck and skull base trauma, and neoplasm. The EMG studies were analyzed to assess the status of innervation of the(More)
UNLABELLED Although previous research suggests that preamputation pain is a risk factor for pain after amputation, little is known about the association between acute postsurgical pain and chronic amputation-related pain. The current prospective study examined the associations of preamputation pain and acute postamputation pain with chronic(More)
PURPOSE To evaluate the utility of a biopsychosocial model to predict long-term adjustment to lower-limb amputation and phantom limb pain (PLP). METHOD One month after lower-limb amputation, 70 participants completed measures of PLP intensity, cognitions (catastrophizing, perceived control over pain), coping (pain-contingent rest), social environment(More)
Biopsychosocial models of chronic pain hypothesize a role for psychological and environmental factors in adjustment to chronic pain. To test the utility of such models for understanding phantom limb pain, 61 persons with recent amputations were administered measures of average phantom limb pain intensity, pain interference, depression, pain coping use, pain(More)
Our hypothesis was that side-to-side difference in the tibial H-reflex amplitude can aid in the diagnosis of unilateral S1 radiculopathy with an otherwise normal side-to-side H-reflex latency difference. We studied 47 healthy subjects, (mean +/- SD, 35 +/- 10 years) using methods similar to those described by Braddom and Johnson. Only those with(More)
This article reviews the epidemiology and classification of traumatic peripheral nerve injuries, the effects of these injuries on nerve and muscle, and how electrodiagnosis is used to help classify the injury. Mechanisms of recovery are also reviewed. Motor and sensory nerve conduction studies, needle electromyography, and other electrophysiological methods(More)