Trans-Cranial Doppler and Peripheral Sensory Threshold Tests for Carbon Disulfide Poisoning: Eunil LEE, et al. Department of Preventive Medicine, School of Medicine, Korea University— Trans-cranial doppler (TCD) and sensory threshold (vibration, pain and discrimination) tests, which are safe and inexpensive techniques, were applied to detect cerebral vasoreactivity or neuropathic changes betwee...

The objectives of this study were to determine whether different virtual reality environments (VR) had a differential effect on pain threshold (PT) in stroke patients with pain, and whether the patient’s level of interest in the VR influenced PT. Ten stroke individuals with pain participated. PT to hot and cold stimuli was determined using Quantitative sensory testing within four different VEs;...

By using an isolated constant current stimulator producing true square-wave pulses, sensory strength-duration curves were obtained at various sites by percutaneous electrical stimulation. Strength-duration curves derived from normal groups were compared to those of patients with peripheral neuropathy. Stimulus strength at sensory threshold was shown to be a reproducible measure of sensory defic...

The vibration sensory threshold (VST) is an easy non-invasive reproducible and sensitive bedside test of peripheral nerve function. It is impaired in pre-dialysis uraemic patients with no clinical evidence of peripheral neuropathy; tends to deteriorate during the first year of dialysis after which it remains relatively constant, and returns towards normal within one week of kidney allograft fun...

The clinical applications of thermal sensory and pain thresholds have been very limited due to large intra-individual variations. In the present paper CO2 and argon lasers were used as thermal stimulators, and the different factors (stimulus parameters and skin conditions) affecting the thresholds are described. The intra-individual variations obtained in sensory (9.3%) and pain (4.3%) threshol...

Cutaneous sensory thresholds were measured at the index fingertipof eight normal subjects. Electric shocks were applied with the finger at rest or tracking a target, which oscillated at one of three frequencies. For each subject, the sensory threshold was positively correlated with the frequency of oscillation. The correlations between sensory suppression and speed of movement agree with previo...

The sensitivity of receptor cells places a fundamental limit upon the sensitivity of sensory systems. For example, the signal-to-noise ratio of sensory receptors has been suggested to limit absolute thresholds in the visual and auditory systems. However, the necessity of optimally processing sensory receptor signals for behaviour to approach this limit has received less attention. We investigat...

Ten subjects balanced their own body or a mechanically equivalent unstable inverted pendulum by hand, through a compliant spring linkage. Their balancing process was always characterized by repeated small reciprocating hand movements. These bias adjustments were an observable sign of intermittent alterations in neural output. On average, the adjustments occurred at intervals of approximately 40...