Autonomic neuroscience : basic & clinical
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Measurement of cutaneous sympathetic reflexes and hemodynamic responses to brief electrical stimuli applied above (forehead) and below (abdominal wall) a spinal lesion. ⋯ Our findings show that skin vasomotor responses to somatosensory stimulation provide a more sensitive tool than electrodermal responses for evaluation of sympathetic function below a spinal cord lesion. STATEMENT OF ETHICS: We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research, and all experiments were conducted with the understanding and consent of each subject.
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To study the effects of sleep stage changes on nocturnal nonlinear heart rate variability (HRV) in postmenopausal women. ⋯ We found that nonlinear indices of HRV describe specific features in HR dynamics during various sleep stages that are not detected by traditional spectral HRV indices.