Adenine nucleoside diphosphates block adaptation of mechanoelectrical transduction in hair cells.
نویسندگان
چکیده
منابع مشابه
Stochastic resonance in the mechanoelectrical transduction of hair cells.
In transducing mechanical stimuli into electrical signals, at least some hair cells in vertebrate auditory and vestibular systems respond optimally to weak periodic signals at natural, nonzero noise intensities. We understand this stochastic resonance by constructing a faithful mechanical model reflecting the hair cell geometry and described by a nonlinear stochastic differential equation. This...
متن کاملMechanoelectrical transduction and adaptation in hair cells of the mouse utricle, a low-frequency vestibular organ.
Hair cells of inner ear organs sensitive to frequencies above 10 Hz adapt to maintained hair bundle deflections at rates that reduce their responses to lower frequencies. Mammalian vestibular organs detect head movements at frequencies well below 10 Hz. We asked whether hair cells of the mouse utricle adapt, and if so, whether the adaptation was similar to that in higher frequency organs such a...
متن کاملAdaptation of mechanoelectrical transduction in hair cells of the bullfrog's sacculus.
Adaptation in a vestibular organ, the bullfrog's sacculus, was studied in vivo and in vitro. In the in vivo experiments, the discharge of primary saccular neurons and the extracellular response of saccular hair cells were recorded during steps of linear acceleration. The saccular neurons responded at the onset of the acceleration steps, then adapted fully within 10-50 msec. The extracellular (m...
متن کاملStochastic Resonance in Hair Cell Mechanoelectrical Transduction
Hair cells are the mechanoelectrical transducers in the auditory system of many species, including humans. Experiments show that transduction in individual hair cells displays stochastic resonance, with optimum response at the natural noise level of living cells. We find that many of the observed features are captured by a simple version of a physiologically faithful model of the transduction m...
متن کاملCalmodulin controls adaptation of mechanoelectrical transduction by hair cells of the bullfrog's sacculus.
Deflection of the mechanically sensitive hair bundle atop a hair cell opens transduction channels, some of which subsequently reclose during a Ca2+-dependent adaptation process. Myosin I in the hair bundle is thought to mediate this adaptation; in the bullfrog's hair cell, the relevant isozyme may be the 119-kDa amphibian myosin I beta. Because this molecule resembles other forms of myosin I, w...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1993
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.90.7.2710