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.