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Titolo:
MECHANICAL AND ELECTROMECHANICAL PROPERTIES OF THE STEREOVILLAR BUNDLES OF ISOLATED AND CULTURED HAIR-CELLS OF THE CHICKEN
Autore:
BRIX J; MANLEY GA;
Indirizzi:
TECH UNIV MUNICH,INST ZOOL,LICHTENBERGSTR 4 D-85747 GARCHING GERMANY TECH UNIV MUNICH,INST ZOOL D-85747 GARCHING GERMANY
Titolo Testata:
Hearing research
fascicolo: 1-2, volume: 76, anno: 1994,
pagine: 147 - 157
SICI:
0378-5955(1994)76:1-2<147:MAEPOT>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
BASILAR PAPILLA; MECHANOELECTRICAL TRANSDUCTION; ADAPTATION; COCHLEA; MOVEMENTS; INNERVATION; CURRENTS; SEM;
Keywords:
STEREOVILLAR BUNDLES; STIMULATION; RESONANCE; MOVEMENT; ACTIVATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
J. Brix e G.A. Manley, "MECHANICAL AND ELECTROMECHANICAL PROPERTIES OF THE STEREOVILLAR BUNDLES OF ISOLATED AND CULTURED HAIR-CELLS OF THE CHICKEN", Hearing research, 76(1-2), 1994, pp. 147-157

Abstract

Isolated single chicken hair cells and pieces of epithelium without the tectorial membrane, either freshly isolated or in tissue culture, were studied using water-jet stimulation of their stereovillar bundles and current injection. Responses were measured under enhanced video-microscopic observation or while using a differential photodiode technique sensitive down into the nanometer range. When stimulated with a water jet at low displacement amplitudes up to about 200 nm, the stereovillar bundle displacement was asymmetrical, indicating a lower stiffness in the excitatory direction, but the reverse was true at higher displacement amplitudes. Undamaged bundles showed no mechanical resonancesbelow 1 kHz. In damaged bundles, however, such resonances were prominent and accompanied by splaying of the stereovilli. Hair cells in the epithelium showed small bundle movements (0.6 nm/mV) whose polarity depended on the polarity of the injected current. These movements probably resulted from activation of the bundle's adaptation motors.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:41:35