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Fano factor analysis was used to characterize the spike trains of single medullary neurons with sympathetic nerve-related activity in cats that were decerebrate or anesthetized with Dial-urethan or urethan. For this purpose, values (Fano factor) of the variance of the number of extracellularly recorded spikes divided by the mean number of spikes were(More)
Time and frequency domain analyses were used to examine the changes in the relationships between the discharges of the inferior cardiac (CN) and vertebral (VN) postganglionic sympathetic nerves produced by electrical activation of the midbrain periaqueductal gray (PAG) in urethan-anesthetized, baroreceptor-denervated cats. CN-VN coherence and phase angle in(More)
The mechanism for generation of the alpha rhythm is controversial. In the current study, analysis in the time and frequency domains revealed that the alpha rhythm recorded from the scalp overlying the human occipital cortex can be entrained to the second or third harmonic of low frequency light flashes. These results support the view that the alpha rhythm(More)
Fano factor analysis and dispersional analysis were used to characterize time series of single and multifiber spikes recorded from the preganglionic cervical sympathetic nerve and cardiac-related slow-wave activity of the whole postganglionic sympathetic vertebral nerve (VN) in anesthetized cats. Fluctuations in spike counts and interspike intervals for(More)
We have studied the relationship between pulse synchronous baroreceptor input (represented by the arterial pulse, AP) and the cardiac-related rhythm in sympathetic nerve discharge (SND) of urethan-anesthetized cats by using partial autospectral and partial coherence analysis. Partial autospectral analysis was used to mathematically remove the portion of SND(More)
PURPOSE OF REVIEW In the last several years, surgeons have increasingly realized the importance of volume loss as a central mechanism of facial aging. New, innovative techniques incorporate volume augmentation, or inflation, to improve cosmetic outcomes. RECENT FINDINGS Previous rejuvenative facial surgical techniques focused on the removal of excess, lax(More)
Frequency- and time-domain analyses were used to compare the effects of stimulation of the defense region of the midbrain periaqueductal gray (PAG) on the 10-Hz and cardiac-related discharges of sympathetic nerves with different cardiovascular targets. In baroreceptor-denervated cats anesthetized with urethan, PAG stimulation at frequencies equal to or(More)
PURPOSE To determine the safety and efficacy of internal cantholysis for closure of larger full-thickness eyelid defects. DESIGN Retrospective review of a consecutive case series. PARTICIPANTS Eighteen patients (18 eyelids) underwent internal cantholysis for repair of a moderate or large full-thickness eyelid defect during the study period. METHODS(More)
PURPOSE To report a novel technique for closure of full-thickness eyelid defects too large for primary closure that avoids an external lateral canthotomy. METHODS Retrospective review of a consecutive case series of all patients undergoing transconjunctival lateral cantholysis. RESULTS Thirteen eyelids of 12 patients underwent transconjuctival lateral(More)
We tested the hypothesis that the cardiac-related rhythm in sympathetic nerve discharge (SND) results from the forcing of a central oscillator to the frequency of the heart beat by pulse-synchronous baroreceptor afferent nerve activity. For this purpose, time series analysis was used to examine the phase relations between the brachial arterial pulse (AP)(More)