Murata J, Murata S, Soma M, Nakae H, Sato Y, Kogo H, Umeki N
Department of Physical and Occupational Therapy, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
Course of Physical Therapy, Department of Health Sciences, Kyoto Tachibana University, Kyoto, Japan.
Skin Res Technol. 2017 Nov;23(4):514-518. doi: 10.1111/srt.12363. Epub 2017 Mar 14.
We hypothesized that skin blood flow (SBF) of fingers are modulated during concentrated finger perception and that the changes in SBF reflect fluctuations in finger volume (FV). The aim of this study, therefore, was examine the relationship between the changes in SBF and FV during Braille reading.
We measured SBF of the finger, cutaneous vascular conductance (CVC), FV, and arterial blood pressure during Braille reading performed under blind conditions in thirty healthy subjects. The subjects were instructed to read a flat plate with raised letters (Braille reading) for 15 seconds using their forefinger, and to touch a blank plate as a control for the Braille discrimination procedure.
Arterial blood pressure slightly increased during Braille reading but remained unchanged during the touching of the blank plate. SBF, CVC, and FV were reduced during Braille reading (decreased by -26%, -29%, and -0.3 mL/100 mL respectively). Furthermore, a significant relationship was observed between the changes in SBF and FV (r=.613) during Braille reading.
These results suggested that SBF of fingers is modulated during concentrated finger perception, and that the variability of blood flow reflects the response in FV.
我们假设在集中手指感知过程中手指皮肤血流量（SBF）会受到调节，且SBF的变化反映手指体积（FV）的波动。因此，本研究的目的是探讨盲文阅读过程中SBF变化与FV变化之间的关系。
我们在30名健康受试者的盲视条件下进行盲文阅读时，测量了手指的SBF、皮肤血管传导率（CVC）、FV和动脉血压。受试者被要求用食指在一块有凸起字母的平板上进行盲文阅读15秒，并触摸一块空白平板作为盲文辨别程序的对照。
在盲文阅读过程中动脉血压略有升高，但在触摸空白平板时保持不变。在盲文阅读过程中，SBF、CVC和FV均降低（分别降低-26%、-29%和-0.3 mL/100 mL）。此外，在盲文阅读过程中观察到SBF变化与FV变化之间存在显著关系（r = 0.613）。
这些结果表明，在集中手指感知过程中手指的SBF会受到调节，且血流变化反映了FV的反应。
