naa a22 4500 510777236 CHVBK 20180411083234.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.3758/s13428-012-0312-z doi (NATIONALLICENCE)springer-10.3758/s13428-012-0312-z iPhysioMeter: A new approach for measuring heart rate and normalized pulse volume using only a smartphone [Elektronische Daten] [Kenta Matsumura, Takehiro Yamakoshi] Heart rate (HR) and normalized pulse volume (NPV) are physiological indices that have been used in a diversity of psychological studies. However, measuring these indices often requires laborious processes. We therefore developed a new smartphone program, named iPhysioMeter, that makes it possible to measure beat-by-beat HR and ln NPV using only a smartphone. We examined its accuracy against conventional laboratory measures. Mental stress tasks were used to alter HR and ln NPV in 12 participants. Bland-Altman analyses revealed negligible proportional bias for HR and ln NPV or for their change values, expressed as ΔHR and Δln NPV. However, a relatively large fixed bias did emerge for ln NPV, as well as a small one for Δln NPV, although both were within the limits of agreement. These findings suggest that iPhysioMeter can yield valid measures of the absolute level of HR and of relative changes in ln NPV. Psychonomic Society, Inc., 2013 Electrocardiograph nationallicence Finger photo-plethysmograph nationallicence iPhone nationallicence Mobile health nationallicence Matsumura Kenta School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Ishikawa, Japan aut Yamakoshi Takehiro School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Ishikawa, Japan aut Behavior Research Methods Springer US; http://www.springer-ny.com 45/4(2013-12-01), 1272-1278 45:4<1272 2013 45 13428 https://doi.org/10.3758/s13428-012-0312-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3758/s13428-012-0312-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Matsumura Kenta School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Ishikawa, Japan aut NATIONALLICENCE 700 1- Yamakoshi Takehiro School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Ishikawa, Japan aut NATIONALLICENCE 773 0- Behavior Research Methods Springer US; http://www.springer-ny.com 45/4(2013-12-01), 1272-1278 45:4<1272 2013 45 13428 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer