Regional differences in facial skin blood flow responses to thermal stimulation

European Journal of Applied Physiology
Akane MiyajiNaoyuki Hayashi

Abstract

The facial skin blood flow (SkBF) shows regional differences in the responses to a given stimulation. The facial SkBFs, especially in the eyelid and nose exhibit unique response to physiological and psychological stimuli, but the mechanisms inducing those regional differences remain unclear. To investigate whether the regional differences in the local control of vasomotion in facial vessels correspond to the regional differences in facial SkBF response, we monitored the relative change of facial SkBF to regional thermal stimulation. We hypothesized that heat stimulation dilates the cutaneous vessels in the eyelid, while cold stimulation constricts those in the nose, which was based on previous findings METHODS: A thermal stimulator was used to apply temperature increase (from 20 to 40 °C at 2 °C/min) and decrease (from 40 to 20 °C at 2°C/min) in a randomized order to the right eyelid, nose, right cheek, and forehead of 14 healthy young males. The facial SkBF was measured for 10 s using laser-speckle flowgraphy when temperatures of 20 °C, 30 °C, and 40 °C had been applied for 30 s in both trials. The SkBF in the eyelid did not change significantly during any thermal stimulation, and the nasal SkBF did not decrease significantly ...Continue Reading

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Citations

Sep 19, 2020·International Journal of Sports Medicine·Naoyuki HayashiTsukasa Ikemura
Apr 17, 2021·Autonomic Neuroscience : Basic & Clinical·Kristen Metzler-WilsonAustin M Sventeckis

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