Publications

March 1999

Journal Papers

• Jurzitza, D. and Hemmert, W. (1992): Quantitative Measurements of Simultaneous Evoked Otoacoustic Emissions. Acustica 77, 93-99.
• Preyer, S., Pfister, M. und Hemmert, W. (1993): Mechanische Reizung isolierter äußerer Haarzellen als Testsystem: Verlust des Rezeptorpotentials nach Streptomyzinbehandlung. HNO 41, 471-474.
• Preyer, S., Hemmert, W., Pfister, M., Zenner, H.-P. and Gummer, A.W. (1994): Frequency response of mature guinea-pig outer hair cells to stereociliary displacement. Hearing Research 77, 116-124.
• Reuter, G., Kössl, M., Hemmert, W., Preyer, S., Zimmermann, U. and Zenner, H.-P. (1994): Electromotility of outer hair cells from the cochlea of the echolocating bat, Carollia perspicillata. J. Comp. Physiol. A. 175:449-455
• Morioka, I., Reuter, G., Reis, P., Gummer, A.W., Hemmert, W. and Zenner, H.-P. (1995): Sound-induced displacement responses in the plane of the organ of Corti in the isolated guinea-pig cochlea. Hearing Research 83, 142-150.
• Plinkert, P.K., Hemmert, W. und Zenner, H.-P. (1995): Methodenvergleich zur Früherkennung des lärmempfindlichen Innenohres. HNO 43, 89-97.
• Preyer, S., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1995): Abolition of the receptorpotential of isolated mammalian outer hair cells by hair-bundle treatment with elastase: a test of the tip-link hypothesis. Hear. Res. 89, 187-193.
• Preyer, S., Renz, S., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1996): Receptor potential of outer hair cells isolated from base to apex of the adult guinea-pig cochlea: Implications for cochlear tuning mechanisms. Auditory Neuroscience 2, 145-157.
• Gummer, A.W., Hemmert, W., Zenner, H.-P. (1996): Resonant tectorial-membrane motion in the inner ear: Its crucial role in frequency tuning. Proc Natl Acad Sci USA 93, 8727-8732.
• Hemmert, W. (1997): Dreidimensionale Schwingungsmessungen im Innenohr: Aufklärung der Frequenzselektivität des Gehörs. PTB-Mitteilungen 107 1/97: 12-18.
• Rodriguez Jorge, J., Zenner, H.-P., Hemmert, W., Burkhardt, C. and Gummer, A.W. (1997): Laservibrometrie: Ein Mittelohr- und Kochleaanalysator zur nicht-invasiven Untersuchung von Mittel- und Innenohrfunktionsstörungen. HNO 45, 997-1007.

• Frank, G., Hemmert, W. and Gummer, A.W. (1999): Limiting dynamics of high-frequency electromechanical transduction of outer hair cells. Submitted to Proc Natl Acad Sci USA.
• Plinkert, P.K., Hemmert, W., Just, K. and Zenner, H.-P. (1997): Monitoring noise susceptibility - sensitivity of otoacoustic emissions and subjective audiometry. Submitted to Brit. J. Audiol.
• Hemmert, W., Morioka, I. and Gummer, A.W. (1999): Characteristics of the Traveling-Wave in the Low-Frequency Region of the cochlea. Submitted to Hear. Res.
• Hemmert, W. and Gummer, A.W. (1999): Three-dimensional motion of the organ of Corti. Submitted to J. Biophys.

Book Contributions

• Gummer, A.W., Hemmert, W., Morioka, I., Reis, P., Reuter, G. and Zenner, H.-P. (1993): Cellular motility measured in the guinea-pig cochlea. In: Biophysics of Hair Cell Sensory Systems. Editors: H. Duifhuis, J.W. Horst, P. van Dijk, S.M. van Netten. World Scientific, Singapore, New Jersey, London, Hong Kong, pp. 229-236.
• Hemmert, W., Preyer, S., Zenner, H.-P. (1993): The receptor potential of isolated guinea-pig outer hair cells in response to mechanical stimulation of the stereociliary bundle. In: Biophysics of Hair Cell Sensory Systems. Editors: H. Duifhuis, J.W. Horst, P. van Dijk, S.M. van Netten. World Scientific, Singapore, New Jersey, London, Hong Kong, p. 224.
• Gummer, A.W., Hemmert, W. and Zenner, H.-P. (1994): Micromechanics of cellular structures in the mammalian cochlea - Auditory and electrical stimulation. In: Active Hearing. Editors: Å. Flock, D. Ottoson, M. Ulfendahl. Plenum-Press, pp. 271-282.
• Hemmert, W., Morioka, I., Reuter, G., Zenner, H.-P. und Gummer, A.W. (1994): Akustisch und elektrisch induzierte Bewegung zellulärer Strukturen im Cortischen Organ des Meerschweinchens. Fortschritte der Akustik: Plenarvorträge und Kurzreferate der 20. Jahrestagung für Akustik. ISSN 0720-2253, DPG GmbH, Dresden, pp. 1045-1048.
• Hemmert, W., Zenner, H.-P. und Gummer, A.W. (1995): Dreidimensionale Schwingungsmessung im Cortischen Organ der Säugetiercochlea. Fortschritte der Akustik, Plenarvorträge und Kurzreferate der 21. Jahrestagung für Akustik. Deutsche Gesellschaft für Akustik e.V., Oldenburg, ISBN 3-9804568-0-3, pp. 207-210.
• Hemmert, W., Schauz, C., Zenner, H.-P. and Gummer, A.W. (1997): Force generation and mechanical impedance of outer hair cells. In: Diversity in Auditory Mechanics. Editors: E.R. Lewis, G.R. Long, R.F. Lyon, P.M. Narins, C.R. Steele, E. Hecht-Poinar. World Scientific, Singapore, New Jersey, London, Hong Kong, pp. 531-537.
• Hemmert, W., Frank, G., Wirth, M., Schauz, C., Zenner, H.-P. und Gummer A.W. (1997): Kraft- und mechanische Impedanzmessungen an äußeren Haarzellen des Hörorgans. Fortschritte der Akustik - DAGA ´97, Plenarvorträge und Kurzreferate der 23. Jahrestagung für Akustik. Deutsche Gesellschaft für Akustik e.V., Oldenburg: DEGA, ISBN 3-9804568-2-X, pp. 250-251.
• Hemmert, W., Mermelstein, M.S. and Freeman, D.M. (1999): Nanometer resolution of three-dimensional motions using video interference microscopy. Technical Digest, Twelfth IEEE International Conference on Micro Electro Mechanical Systems, IEEE, ISBN: 0-7803-5194-0, pp. 302-308.

Published Talks

• Hemmert, W., Reuter, G., Zenner, H.-P. and Gummer, A.W. (1993): The motility of the cuticular plate in the guinea-pig cochlea. In: Gene - Brain - Behaviour. Beiträge zur 21. Göttinger Neurobiologentagung. Editors: N. Elsner, M. Heisenberg. Georg-Thieme-Verlag, Stuttgart, New York, p. 270.
• Kössl, M., Reuter, G., Hemmert, W., Preyer, S. and Zenner, H.-P. (1993): Motility of outer hair cells in the organ of corti of the bat, Carollia perspicillata. Proc. 21th Göttingen Neurobiology conference, Gene-Brain-Behaviour, N. Elsner and M. Heisenberg (eds). Thieme Stuttgart, New York, p. 264.
• Gummer, A.W., Hemmert, W., Reuter, G. und Zenner, H.P. (1993): Schallstimulierte Bewegung der Kutikularplatte in der Cochlea von Meerschweinchen. Eur. Archiv. Oto. Rhino. Laryngol. Suppl. II, p. 79.
• Gummer, A.W., Preyer, S., Hemmert, W. and Zenner, H.-P. (1994): Receptor potential of guinea-pig outer hair cells in response to white-noise deflection of their stereocilia. Assoc. Research in Otolaryngology, 294.
• Zenner, H.-P., Ruppersberg, J.P., Gummer, A.W., Hemmert, W., Preyer, S., Knipper, M., Fakler, B., Brändle, U., Glowatzki, E. and Zimmermann, U. (1994): Sound processing steps in the mammalian cochlea. In: Sensory Transduction. Beiträge zur 22. Göttinger Neurobiologentagung. Editors: N. Elsner, H. Breer, Georg-Thieme-Verlag, Stuttgart, New York, p. 63.
• Preyer, S., Renz, S., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1994): The frequency response of mechanoelectrical transduction of outer hair cells of the adult mammalian cochlea. In: Sensory Transduction. Beiträge zur 22. Göttinger Neurobiologentagung. Editors: N. Elsner, H. Breer, Georg-Thieme-Verlag, Stuttgart, New York, p. 70.
• Morioka, I., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1994): Three-dimensional motion of the organ of Corti of the isolated guinea-pig cochlea. In: Sensory Transduction. Beiträge zur 22. Göttinger Neurobiologentagung. Editors: N. Elsner, H. Breer, Georg-Thieme-Verlag, Stuttgart, New York, p. 80.
• Hemmert, W., Morioka, I., Zenner, H.-P. and Gummer, A.W. (1994): The micromechanics of cellular structures in the apical region of the isolated guinea-pig cochlea. In: Sensory Transduction. Beiträge zur 22. Göttinger Neurobiologentagung. Editors: N. Elsner, H. Breer, Georg-Thieme-Verlag, Stuttgart, New York, p. 81.
• Maaßen, M.M., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1994): Messung der Bewegung zellulärer Strukturen im Cortischen Organ des Meerschweinchens bei elektrischer Stimulation. Eur. Archiv. Oto. Rhino. Laryngol. Suppl. II, p. 82.
• Zenner, H.-P., Ruppersberg, J.P., Gummer, A.W., Hemmert, W., Preyer, S., Knipper, M., Fakler, B., Brändle, U., Glowatzki, E. and Zimmermann, U. (1994): Molecular events of sound processing steps in the mammalian cochlea. Biol. Chem. 375, Suppl, p. 115.
• Gummer, A.W., Hemmert, W., Morioka, I. and Zenner, H.-P. (1994): Laser interferometric measurement of the micromechanics of the inner ear. Proc. Int. Sym. Biomed. Optics, 1994, pp. xx.
• Gummer, A.W., Hemmert, W., Zenner, H.P. (1995): The tectorial membrane is mechanically resonant at a frequency 0.5 oct below the characteristic frequency of the cochlear partition. Proc. 18th ARO Midwinter Meeting, 751.
• Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1995): Three-dimensional vibration measurements on different locations of the cochlear partition. Proc. 18th ARO Midwinter Meeting, 448.
• Preyer, S., Renz, S., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1995): Characterization of mechanoelectrical transduction of adult mammalian isolated outer hair cells. Proc. 18th ARO Midwinter Meeting, 635.
• Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1995): Three-dimensional vibration measurements on different locations of the cochlear partition. In: Göttingen Neurobiology Report 1995. Proceedings of the 22nd Göttingen Neurobiology Conference. Editors: N. Elsner and R. Menzel, Georg-Thieme-Verlag, Stuttgart, New York, p. 300.
• Hemmert, W., Schauz, C., Zenner, H.-P. and Gummer, A.W. (1995): The mechanical impedance of outer hair cells. Proc. 32th Inner Ear Biologie Workshop, O30.
• Hemmert, W., Schauz, C., Zenner, H.-P., and Gummer, A.W. (1996): Force generation and mechanical impedance of outer hair cells. Proc. 19th ARO Midwinter Meeting.
• Schauz, S., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1996): Gadolinium reduces outer hair cell force generation. Proc. 19th ARO Midwinter Meeting.
• Rodriguez Jorge, J., Hemmert, W., Burkhardt, C., Zenner, H.-P. and Gummer, A.W. (1996): The measured specific acoustic impedance of the umbo matches hearing thresholds in healthy humans. Proc. 19th ARO Midwinter Meeting.
• Hemmert, W., Schauz, C., Zenner, H.-P. and Gummer, A.W. (1996): The mechanics of outer hair cells: Measurements and models. Proc. 33th Inner Ear Biologie Workshop, p. 37.
• Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1997): Three-dimensional vibration of the cochlear partition: Correction for the open cochlea condition. Proc. 20th ARO Midwinter Meeting, 40.
• Hemmert, W. (1997): Cochlear micromechanics: The need for a synergistic action between outer hair cells and tectorial membrane to ensure active amplification. In: From membrane to mind. Proceedings of the 25th Göttingen Neurobiology Conference 1997; Volume I. Editors: N. Elsner and H. Wässle, Georg-Thieme-Verlag, Stuttgart, New York, ISBN 3-13-110291-8, p. 13.
• Hemmert, W., Zenner, H.-P., Gummer and A.W. (1997): Three-dimensional vibration of the cochlear partition: Correction for the open cochlea condition. In: From membrane to mind. Proceedings of the 25th Göttingen Neurobiology Conference 1997; Volume I. Editors: N. Elsner and H. Wässle, Georg-Thieme-Verlag, Stuttgart, New York, ISBN 3-13-110291-8, p. 25.
• Frank, G., Wirth, M., Hemmert, W. and Gummer, A.W. (1997): Mechanical properties of isolated outer hair cells. In: From membrane to mind. Proceedings of the 25th Göttingen Neurobiology Conference 1997; Volume I. Editors: N. Elsner and H. Wässle, Georg-Thieme-Verlag, Stuttgart, New York, ISBN 3-13-110291-8, p. 21.

Poster

• Hemmert W, Reuter G, Zenner H-P, Gummer AW (1993): The Motility of the Cuticular Plate in the Guinea-Pig Cochlea. Göttinger Neurobiologentagung.
• Kössl W, Reuter G, Hemmert W, Preyer S, Zenner H-P (1993): Motility of outer hair cells in the organ of corti of the bat, Carollia perspicillata. Göttinger Neurobiologentagung.
• Hemmert W, Preyer S, Zenner H-P (1993): The receptor potential of isolated guinea-pig outer haircells in response to mechanical stimulation of the stereociliary bundle. Göttinger Neurobiologentagung.
• Hemmert W, Preyer S, Zenner H-P (1993): The receptor potential of isolated guinea-pig outer haircells in response to mechanical stimulation of the stereociliary bundle. Symposium: Biophysics of Hair Cell Sensory Systems, Groningen.
• Reuter G, Preyer S, Hemmert W, Pfister M, Eichhorn S (1993): The role of calcium in mechanoelectrical transduction of guinea pig isolated outer hair cells. 30th Inner Ear Biologie Workshop, Budapest.
• Preyer S, Hemmert W (1993): Outer hair cell receptor potentials eclicted by direct mechanical stimulation of stereocilia. 30th Inner Ear Biologie Workshop, Budapest.
• Preyer S, Renz S, Hemmert W, Zenner H-P, Gummer AW (1994): The frequency response of mechanoelectrical transduction of outer hair cells of the adult mammalian cochlea. Beiträge zur 22. Göttinger Neurobiologentagung.
• Zenner H-P, Ruppersberg JP, Gummer AW, Hemmert W, Preyer S, Knipper M, Fakler B, Brändle U, Glowatzki E, Zimmermann U (1994): Sound processing steps in the mammalian cochlea. Beiträge zur 22. Göttinger Neurobiologentagung.
• Morioka I, Hemmert W, Zenner H-P, Gummer AW (1994): Three-dimensional motion of the organ of Corti of the isolated guinea-pig cochlea. Beiträge zur 22. Göttinger Neurobiologentagung.
• Hemmert W, Morioka I, Zenner H-P, Gummer AW (1994): The micromechanics of cellular structures in the apical region of the isolated guinea-pig cochlea. Beiträge zur 22. Göttinger Neurobiologentagung.
• Hemmert W, Zenner HP, Gummer AW (1994): Acoustical and electrical induced motility in the guinea-pig organ of Corti. 31th Inner Ear Biologie Workshop, Montpellier.
• Hemmert W, Zenner HP, Gummer AW (1995): Three-dimensional vibration measurements on different locations of the cochlear partition. 18th ARO Midwinter Meeting.
• Preyer, S., Renz, S., Hemmert, W., Zenner, H.-P. and Gummer, A.W. (1995): Characterization of mechanoelectrical transduction of adult mammalian isolated outer hair cells. 18th ARO Midwinter Meeting.
• Hemmert W, Zenner HP, Gummer AW (1995): Three-dimensional vibration measurements on different locations of the cochlear partition. Beiträge zur 23. Göttinger Neurobiologentagung.
• Hemmert W, Schauz C, Zenner HP, Gummer AW (1996): Force generation and mechanical impedance of outer hair cells. 19th ARO Midwinter Meeting.
• Schauz C, Hemmert W, Zenner HP, Gummer AW (1996): Gadolinium reduces outer hair cell force generation. 19th ARO Midwinter Meeting.
• Rodriguez Jorge J, Hemmert W, Burkhardt C, Zenner HP, Gummer AW (1996): The measured specific acoustic impedance of the umbo matches hearing thresholds in healthy humans. 19th ARO Midwinter Meeting.
• Schauz S, Hemmert W, Zenner HP, Gummer AW (1996): Outer hair cells - their force generation and their mechanical impedance. Beiträge zur 24. Göttinger Neurobiologentagung.
• Hemmert W, Zenner HP, Gummer AW (1997): Three-dimensional vibration of the cochlear partition: Correction for the open cochlea condition. 20th ARO Midwinter Meeting.
• Hemmert W, Zenner HP, Gummer AW (1997): Three-dimensional vibration of the cochlear partition: Correction for the open cochlea condition. Beiträge zur 25. Göttinger Neurobiologentagung.
• Frank, G., Wirth, M., Hemmert, W. and Gummer, A.W. (1997): Mechanical properties of isolated outer hair cells. Beiträge zur 25. Göttinger Neurobiologentagung.
• Hemmert W, Mermelstein MS and Freeman DM (1999): Nanometer resolution of three-dimensional motions using video interference microscopy. IEEE International MEMS99, Orlando FL, January 17-21, 1999.