The literature on nerve conduction velocity (NCV) studies and electromyography in lead exposed populations was reviewed. All studies revealed some degree of defect in their experimental design. Disregarding these limitations, a consensus of the studies indicates that a mild slowing (7%) of motor and sensory NCV may be present in the median and posterior… (More)
Pattern-reversal visual (PRVEPs), brain-stem auditory (BAEPs), and somatosensory (SSEPs) evoked potentials were studied in 12 patients with Huntington's disease (HD) and were repeated in eight at one and two years. The mean cortical SSEP amplitude was decreased compared with that of age-matched controls, with a trend of decreasing amplitude with increasing… (More)
Visual evoked potentials to flash stimuli were recorded in 15 infants with hydrocephalus. All demonstrated increased latencies for the prominent positive component (P2) of the response, compared to the mean value for age-matched controls. In nine infants studied prior to and 1 week after shunt procedure, the P2 latency decreased.
Twenty-one children had interictal EEGs showing spikes located at the Fz, Cz, and Pz electrodes; their EEGs were compared with those of age-matched children referred to our laboratory (group 1, 63 children) and children with C3 and C4 spikes (group 2, 41 children). Midline spikes correlated well with a history of seizures (91% vs 73% in group 1 and 76% in… (More)
Visual evoked potentials (VEPs) to repetitive flash stimuli were abnormal in 10 patients with documented hydrocephalus. Abnormalities included latency delays, fatigability, and asymmetries. Both latency and wave form disturbances improved in the postshunt period. Clinical progression of the hydrocephalus occurred in several patients, and this correlated… (More)
The utility of checkerboard pattern reversal visual evoked potentials in the evaluation of Parkinson disease (Pd) was studied in 25 patients and controls without eye pathology. The results did not reveal differences in potential latency but the amplitude appeared slightly larger in PD than controls. Major intraocular differences were observed only in Pd… (More)
Near normal glucoregulation was maintained in 10 patients with insulin-dependent (type I) diabetes mellitus for 6 wk with preprogrammed continuous subcutaneous insulin infusion using a portable battery-powered infusion pump (CSII). This form of therapy resulted in a statistically significant increase in motor nerve conduction velocity in the median and… (More)
In their discussion of field testing of health effects of environmental and industrial toxins, Gullion and Eckerman make the following observations which can be applied to the current literature survey: "The general inattention to methodological consistency makes it difficult to integrate the research to date into a clear picture of what is known and not… (More)