Details

Autor(en) / Beteiligte

• Murata, J.
• Murata, S.
• Soma, M.
• Nakae, H.
• Sato, Y.
• Kogo, H.
• Umeki, N.

Titel

Relationship between the changes in blood flow and volume in the finger during a Braille character discrimination task

Ist Teil von

• Skin research and technology, 2017-11, Vol.23 (4), p.514-518

Ort / Verlag

England: John Wiley & Sons, Inc

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• Purpose 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. Methods 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. Results 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. Conclusion 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.