PubMed · 6735418
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K C McGill, L J Dorfman. 1984. High-resolution alignment of sampled waveforms.. https://doi.org/10.1109/tbme.1984.325413
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OBJECTIVES: To determine the effects of postmenopausal hormone replacement therapy on 'sympathetic skin response' test which is one of the tests to evaluate autonomic functions. METHODS: Sixty postmenopausal women, 30 of whom taking hormone replacement therapy and the remaining 30 without hormone replacement therapy, were enrolled in this study. Sympathetic skin responses were recorded in each subject by Medelec Premiere electromyograph. Latency and amplitude of sympathetic skin response and area under the negative component of sympathetic skin response were measured and the groups were compared statistically regarding these results. RESULTS: Latency values of the groups were not significantly different, whilst the difference between the sympathetic skin response amplitudes of the groups, as well as the difference between the measurements of area under the negative component of sympathetic skin response of the groups were statistically significant. CONCLUSION: The results of the current study seem to indicate that estrogen has a significant inhibitory effect on the sympathetic neuron pool at the spinal cord level.
During lateral gaze shifts to a visual target of 10 degrees eccentricity, the gap paradigm (presence of a 200 ms gap between offset of fixation lamp and onset of target lamp) produced a significant decrease in the reaction times (RTs) of head movements (54 ms) and saccades (82 ms) when compared with those obtained under the overlap paradigm across five subjects. Correlation coefficients between the RTs of saccades and head movements were significantly lower under the gap paradigm than those under the overlap paradigm. Particularly, the RTs of head movements occurring in association with express saccades were independent of the saccade RTs. These results indicate that the head and eye motor systems are controlled by the separate neural mechanisms in the conditions which produce express saccades.