Pettersen FJ, Høgetveit JO. From 3D tissue data to impedance using Simpleware ScanFE+IP and COMSOL Multiphysics - a tutorial. Journal of Electrical Bioimpedance, Vol 2 2011.
Grimnes
S, Jabbari A, Martinsen ØG, Tronstad C. Electrodermal activity by DC potential and AC conductance measured simultaneously at the same skin site. Skin Res. Technol., 17, 26-34, 2011.
Kalvøy H, Johnsen GK, Martinsen ØG, Grimnes S. New method for separation of electrode polarization impedance from measured tissue impedance. Open Biomed. Eng. J., 5, 8-13, 2011.
Johnsen GK, Norlen L, Martinsen ØG, Grimnes S. Sorption properties of the human stratum corneum. Skin Pharmacol. Physiol., 24, 190-198, 2011.
Knaapila M, Rømoen OT, Svåsand E, Pinheiro JP, Martinsen ØG, Buchanan M, Skjeltorp AT, Helgesen G. Conductivity Enhancement in Carbon Nanocone Adhesive through Electric Field Alignment. ACS Appl. Mat. Interf., 3, 378-384, 2011.
Johnsen GK, Lütken CA, Martinsen ØG, Grimnes S. Memristive model of electro-osmosis in skin. Phys. Rev. E., 83, 031916, 2011.
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Pettersen FJ, Martinsen ØG, Grimnes S, Høgetveit JO. Impedance measurement set-up based on off-the-shelf PXI modules. Journal of Physics, Issue 1 2010.
Johnsen GK, Haugsnes AB, Martinsen ØG, Grimnes S. A new approach for an estimation of equilibrium stratum corneum water content. Skin Res. Technol., 16, 142-145, 2010
Kalvøy H, Tronstad C, Nordbotten B, Grimnes S, Martinsen ØG. Electrical impedance of stainless steel needle electrodes. Ann. Biomed.Eng. 38,2371-2382,2010
Martinsen ØG, Kalvøy H, Grimnes S, Norbotten B, Hol PK, Fosse E, Myklebust H, Becker LB. Invasive electrical impedance tomography for blood vessel detection. Open Biomed.Eng. J., 4, 135-137, 2010
Høyum P, Kalvøy H, Martinsen ØG, Grimnes S. Finite element model of needle electrode spatial sensitivity. Physiol. Meas., 31, 1369-1379, 2010
Tronstad C, Pischke S, Tønnessen TI, Martinsen ØG, Grimnes S. Early detection of cardiac ischemia using a conductometric pCO2 sensor: real-time drift correction and parameterization. Physiol. Meas., 31, 1241-1255, 2010
Grimnes S, Jabbari A, Martinsen ØG, Tronstad C. Skin potential and skin conductance electrodermal activity measurements. Skin Res. Technol., 17, 26-34, 2011
Tronstad C, Johnsen GK, Grimnes S, Martinsen ØG. A study of electrode gels for skin conductance measurements. Physiol. Meas., 31, 1395-1410, 2010
Grimnes S, Martinsen ØG. Journal of Electrical Bioimpedance (JEB) - a new, open access, scientific journal. (Editorial) J. Electr. Bioimp.,1,1,2010
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Johnsen GK , Martinsen ØG, Grimnes S. Estimation of in vivo water content of the stratum corneum from electrical measurements. Open Biomed. Eng. J., 3, 8-12,2009
Svåsand E, Kristiansen KdL, Martinsen ØG, Helgesen G, Grimnes S, Skjeltorp AT. Behavior of carbon cone particle dispersions in electric and magnetic fields. Coll. Surf. A: Physiochem. Eng. Aspects, 339, 211-216, 2009
Sauter AR, Dodgson MS, Kalvøy H, Grimnes S, Stubhaug A, Klaastad Ø. Current threshold for nerve stimulation depends on electrical impedance of the tissue: A study of ultrasound-guided electrical nerve stimulation of the median nerve. Anesth. Analg., 108 (4), 1338-1343, 2009
Kalvøy H, Frich L, Grimnes S, Martinsen ØG, Hol PK, Stubhaug A. Impedance-based tissue discrimination for needle guidance. Physiol. Meas., 30, 129-140, 2009
Høgetveit JO, Kristiansen F and Røislien J. A novel method for indirectly monitoring arterial pO2 during cardiopulmonary bypass. J Med Eng Technol. 33 (7), 567-574, 2009
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Martinsen ØG, Grimnes S, Nilsen JK, Tronstad C, Jang W, Kim H, Shin K, Naderi M, Thielmann F. Gravimetric method for in vitro calibration of skin hydration measurements. IEEE Trans. Biom. Eng., 55(2), 728-732, 2008
Martinsen ØG, Grimnes S, Nilsen SH. Water sorption and electrical properties of human nail. Skin Res. Technol., 14(2), 142-146, 2008
Andrew AC, Colbert AP, Anderson BJ, Martinsen ØG, Hammerschlag R, Cina S, Wayne PM, Langevin HM. Electrical properties of acupuncture points and meridians: A systematic review. Bioelectromagnetics, 29(4), 245-256, 2008
Tronstad C, Gjein GE, Grimnes S, Martinsen ØG, Krogstad AL, Fosse E. Electrical measurement of sweat activity. Physiol. Meas. 29(6), S407-S415, 2008
Ahn AC, Colbert AP, Anderson BJ, Martinsen ØG, Hammerschlag R, Cina S, Wayne PM, Langevin HM. Electrical properties of acupuncture points and meridians: A systematic review. Skin Res Tec 14(2), 142-146, 2008
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Imenes K, Aasmundtveit K, Husa EM, Hogetveit JO, Halvorsen S, Elle OJ, Mirtaheri P, Fosse E, Hoff L. Assembly and packaging of a three-axis micro accelerometer used for detection of heart infarction. Biomed. Microdevices. DOI 10.1007/s10544-007-9082-2
Grimnes S, Martinsen OG. Sources of error in tetrapolar impedance measurements on biomaterials and other ionic conductors. J. Phys. D: Applied Physics, 40(1), 9-14, 2007.
Grimnes S, Martinsen OG. Comments on Algorithm for Tissue Ischemia Estimation Based on Electrical Impedance Spectroscopy. IEEE Trans. Biomed. Eng. 54(2), 344, 2007.
Martinsen OG, Clausen S., Nysather J.B., Grimnes S. Utilising characteristic electrical properties of the epidermal skin layers to detect fake fingers in biometric fingerprint systems – A pilot study. IEEE Trans. Biomed. Eng., 54(5), 891-894, 2007.
Martinsen OG, Grimnes S, Kirkhus T, Morkrid L, Aas K. Increased moisture content in children’s atopic skin. Europ. J. Ped. Dermatol. 17, 17-20, 2007.
Martinsen OG, Grimnes S, Aas K. Climatic influence on children’s atopic skin studied by changes in skin hydration – a pilot study. Europ. J. Ped. Dermatol. 17, 99-102, 2007.
Ahn A.C., Martinsen OG. Electrical characterization of acupuncture points: Technical issues and challenges. J. Alt. Complement. Med. 13(8), 817-824, 2007.
Fahlstrøm E, Grimnes S, Johannesen NH: An interdepartmental, standarized equipment pool. Journal of Nursing Management, 14, 148-154, 2006.
Høgetveit JO, Kristiansen F, Pedersen TH: Development of an instrument to indirectly monitor arterial pCO2 during cardiopulmonary bypass. Perfusion, 21, 13-19, 2006.
Kristiansen F, Høgetveit JO, Pedersen TH: Clinical evaluation of an instrument to measure carbon dioxide tension at the oxygenator gas outlet in cardiopulmonary bypass. Perfusion, 21, 21-26, 2006.
Øyri K, Balasingham I, Samset E, Høgetveit JO, Fosse E: Wireless continuous arterial blood pressure monitoring during surgery: A pilot study. Anesth Analg, 102, 478-483, 2006.
Mirtaheri P, Grimnes S, Martinsen Ø G: Electrode Polarization Impedance in Weak NaCl Aqueous Solutions. IEEE Trans. Biomed. Eng., 52(12), 2093-2099, 2005. (509KB)
Grimnes S, Martinsen ØG: Cole electrical impedance model - a critique and an alternative, IEEE Trans. Biomed., 52(1), 132-135, 2005. (158KB)
Martinsen ØG, Grimnes S, Piltan H: Cutaneous perception of electrical direct current, Innov. Tech. Biol. Med., 25(4), 240-243, 2004.(160KB)
Mirtaheri P, Omtveit T, Klotzbuecher T, Grimnes S, Martinsen ØG, Tønnessen TI: Miniaturization of a biomedical gas sensor, Physiol. Meas., 25, 1511–1522, 2004. (388KB)
Mirtaheri P, Grimnes S, Martinsen ØG, Tønnessen TI: A new biomedical sensor for measuring PCO2, Physiol. Meas. 25, 421-436, 2004. (404KB)
Martinsen ØG, Grimnes S: Authors reply to comments on "Line patterns in the mosaic electric properties of human skin--a cross correlation study" IEEE Trans Biomed Eng. 2003 Jan;50(1):114.
Kvarstein G, Barstad M, Mirtaheri P, Tonnessen TI.: Tissue carbon dioxide tension: a putative specific indicator of ischemia in porcine latissimus dorsiPlast Reconstr Surg. 2003 Dec;112(7):1825-31.
Kvarstein G, Mirtaheri P, Tonnessen TI.: Detection of organ ischemia during hemorrhagic shock. Acta Anaesthesiol Scand. 2003 Jul;47(6):675-86.
Martinsen ØG, Grimnes S, Schwan HP: Interface phenomena and dielectric properties of biological tissue, Encyclopedia of Surface and Colloid Science, 2643-2652, 2002.(461KB)
Martinsen ØG, Grimnes S, Mørkrid L, Hareide M: Line patterns in the mosaic electrical properties of human skin - a cross correlation study, IEEE Trans. Biomed. Eng., 48(6), 731-734, 2001.
Martinsen ØG, Grimnes S: Facts and myths about electrical measurement of stratum corneum hydration state, Dermatology, 202, 87-89, 2001. (114KB)
Martinsen ØG, Grimnes S, Mirtaheri P: Non-invasive measurements of post mortem changes in dielectric properties of haddock muscle - a pilot study, J. Food Eng., 43(3), 189-192, 2000. (118KB)
Martinsen ØG, Grimnes S, Haug E.: Measuring depth depends on frequency in electrical skin impedance measurements, Skin Res. Technol., 5, 179-181, 1999. (28KB)
Martinsen ØG, Grimnes S: On using single frequency electrical measurements for skin hydration assessment, Innov. Tech. Biol. Med., 19(5), 395-399, 1998. (43KB)
Martinsen ØG, Grimnes S, Karlsen J: Low frequency dielectric dispersion of microporous membranes in electrolyte solution, J. Coll. Interface Sci., 199(2), 107-110, 1998. (102KB)
Martinsen ØG, Grimnes S, Kongshaug ES: Dielectric properties of some keratinized tissues. Part 2: human hair, Med. Biol. Eng. Comput., 35(3), 177-180, 1997. (44KB)
Martinsen ØG, Grimnes S, Sveen O: Dielectric properties of some keratinized tissues. Part 1: stratum corneum and nail in situ, Med. Biol. Eng. Comput., 35(3), 172-176, 1997. (198KB)
Pedersen TH, Videm V, Svennevig JL, Karlsen H, Østbakk RW, Jensen Ø, Mollnes TE. «Ecmo using a centrifugal pump and a servo regulator preventing negative inlet pressure: in vitro and in vivo investigations». Ann. Thorac Surg 1997;63:1333-9.
Martinsen ØG, Grimnes S, Henriksen I, Karlsen J: Measurement of the effect of topical liposome preparations by low frequency electrical susceptanceInnov. Tech. Biol. Med., 17(3), 217-222, 1996. (663KB)
Kongsgaard E, Steen T, Jensen Ø, Aass H, Amlie JP."Temperature guided catheter ablation of myocardium: Comparison of catheter tip and tissue temperatures in an in vitro model". PACE 1997. Publisert også i Hjerteforum Suppl. 4, 1996 vol 8.
Aasen AO, Sveen O, Høgetveit J.O. Data Presentation in the Surgical Intensive Care Unit. Development of a Data Presentation System for Critical Biochemical Variables and Scoring Systems. (9th Annual Meeting of the Surgical Infection Society - Europe -) British Journal of Surgery, 1996, 83, 863.
Martinsen ØG, Grimnes S, Karlsen J: Electrical methods for skin moisture assessment, Skin Pharmacol., 8(5), 237-245, 1995. (1039KB)
Berge J A, Gramstad L, Grimnes S: A simplified concept for controlling oxygen mixtures in th anaesthetic machine - better, chaper and more user-friendly? Acta Anesthesiol Scand, 1995, 39, 563-567
Abildgaard A, Jensen Ø, Kløw NE. "A pressure recording guide wire for measurements of transstenotic gradients in arteries: in vitro validation". Investigative Radiology Volume 29, number 2,1994:178-183.
Berge J A, Gramstad L, Grimnes S: An evaluation of a time-saving anaesthetic machine checkout prosedure. Eur J Anaesthesiol, 1994,11,493-498.
Martinsen ØG, Grimnes S, Karlsen J: An instrument for the evaluation of skin hydration by electrical admittance measurements, Innov. Tech. Biol. Med., 14(5), 588-596, 1993.
Berge J A; Gramstad L, Jensen Ø: "A training simulator for detecting equipment failure in the anaesthetic machine", European Journal of Anesthesiology 1993, 10, 19-24.
Grimnes S: Modular implementation of PACS: preliminary results of the RiksPACS project. Imaging equipment considerations. Euro J Radiol, 16, 62-63, 1992
Svenningsen L, Jensen Ø: "A method for Objective Measurement of Fetal Head Compression during the second stage of Labour", Gynecol. obstet. Invest. ISSN 0378-7346;26(3),1988:219-224.
Qiao Z, Mørkrid L, Grimnes S: Three electrode method to study event-related responses in skin electrical potential, admittance and blood flow. Med & Biol Eng & Comp, 25, 567-572, 1987.
Qiao Z, Mørkrid L, Grimnes S: Simultaneous measurement of electrical admittance, blood flow and temperature at the same skin site with a specially designed probe. Med & Biol Eng & Comp, 25, 299-304, 1987.
Svenningsen L, Lindemann R, Eidal K, Jensen Ø: "Neonatal retinal haemoraghes and neuro-behaviour related to tractive forces in vacuum extractions", Acta Gyn Scand vol 66, 1987.
Endresen K, Amlie J P, Forfang K, Simonsen S, Jensen Ø: " Monophasic action potentials in patients with coronary artery disease: reproducibility and electrical restitution and conduction at different stimulation rates", Cardiovasc Res 1987,21:696-702.
Svenningsen L, Jensen Ø: "Application of fiberoptics to the clinical measurement of intra-uterine pressure in labor", Acta Obstet Gynecol Scand 65:551-555, 1986.
Sejersted O M, Hargens A R, Kardel K R, Blom P, Jensen Ø, Hermansen L: "Intramuscular fluid pressure during isometric contraction of human skeletal muscle", J. Appl. Physiol. Respirat. Environ. Exercise Physiol. 56(2):287-295, 1984.
Grimnes, S (1984): Pathways of ionic flow through human skin in vivo. Acta Derm Venereol (Stockh), 64, 93-98.
Grimnes S: Impedance measurement of individual skin surface electrodes, Med. Biol. Eng. Comput., 21, 750-755, 1983a. (332KB)
Grimnes S: Skin impedance and electro-osmosis in the human epidermis, Med. Biol. Eng. Comput., 21, 739-749, 1983b. (775KB)
Grimnes, S (1983c): Dielectric breakdown of human skin in vivo. Med & Biol Eng & Comput, 21, 379-81
Grimnes, S (1983d): Electrovibration, cutaneous sensation of microampere current. Acta Physiol Scand, 118, 19-25.
Grimnes, S (1983e): True rms volt/ammeters for surgical diathermy measurements during an operation. Med&Biol Eng&Comp, 21, 654-656
Grip A, Jensen Ø, Kristoffersen K: "A versatile peak-detector for physiological signals", Med. & Biol. Eng. & Comput. 20:240-242,1982.
Grimnes S: Psychogalvanic reflex and changes in electrical parameters of dry skin, Med. Biol. Eng. Comput., 20, 734-740, 1982. (588KB)
Grimnes S (1978): Analysis of the choke-earthed surgical diathermy circuit. Med&Biol Eng&Comp, 16, 451-453
Grimnes S (1973): A simple, Low Cost, Fast Galvanostat. Chem Instrum, 5, 141-144
Christiansen H, Grimnes S, Kulås R, Waaler T (1971): Automated analytical systems and dataterminals. An off-line datasystem device. Pharmac Acta Helv, 46, 677-680
Grimnes S (1970): Enclosed arc lamp power supply. J Physics E: Scient Instr, 3 154-155
Grimnes S (1970): Precision voltage comparator has low power-supply drain. Electronic design, 20, sept.27 1970
Cachet C, Epelboin I, Grimnes S, Lestrade J-C (1968): Sur la determination de la capacite de double couche d’une electrode a goutte de mercure tombante, a partir de l’impedance de l’electrode et de la courbe electrocapillaire. J Chimie Physique et de physico-chimie biologique, 65, 306-313
