H. Ugnell

Monitoring of respiratory and heart rates using a fibre-optic sensor

Lars‐Göran Lindberg, H. Ugnell, P. Å. Öberg · Medical & Biological Engineering & Computing · 1992 · 156 citations

Engineering, Biomedical Engineering, Physiology +14

Experimental evaluation of two new sensors for respiratory rate monitoring

M. Vegfors, H. Ugnell, Bertil Hök et al. · Physiological Measurement · 1993 · 34 citations

Nursing, Clinical Sciences, Physiology +17

The time-variable photoplethysmographic signal; dependence of the heart synchronous signal on wavelength and sample volume

H. Ugnell, P. Å. Öberg · Medical Engineering & Physics · 1995 · 29 citations

Engineering, Cardiology, Physiology +12

<title>Time variable photoplethysmographic signal: its dependence on light wavelength and sample volume</title>

H. Ugnell, P. Å. Öberg · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1995 · 15 citations

Engineering, Biomedical Engineering, Physiology +13