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The modulation of the sensitivity of the mammalian cochlea by low frequency tones 3. basilar membrane motion


, : The modulation of the sensitivity of the mammalian cochlea by low frequency tones 3. basilar membrane motion. Hearing Research 13(1): 19-28

The simultaneous presentation of an intense low frequency tone and a moderate intensity high frequency tone produced modulation of the high frequency motion of the cochlear partition in the 1st turn of the guinea pig cochlea. This modulation was in synchrony with the displacement caused by the low frequency tone. Maximum reduction in mechanical sensitivity was observed by peak displacements towards scala tympani, whereas a less pronounced reduction was observed for peak displacements towards scala vestibuli. Modulation was reduced or absent for high frequency tones more than an octave below the characteristic frequency of the mechanical tuning curve and was absent postmortem.


Accession: 006719725

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Related references

Patuzzi, R.; Sellick, P.M.; Johnstone, B.M., 1984: The modulation of the sensitivity of the mammalian cochlea by low frequency tones. III. Basilar membrane motion. The simultaneous presentation of an intense low frequency tone and a moderate intensity high frequency tone produced modulation of the high frequency motion of the cochlear partition in the first turn of the guinea pig cochlea. This modulation was...

Russell, I.J.; Kössl, M., 1992: Modulation of hair cell voltage responses to tones by low-frequency biasing of the basilar membrane in the guinea pig cochlea. Inner (IHC) and outer (OHC) hair cell receptor potentials were recorded during stimulation with combinations of high-frequency (HF) tones and a 100 Hz tone burst of constant level (80 dB SPL). For frequencies at and below characteristic frequency...

Patuzzi, R.; Sellick, P.M.; Johnstone, B.M., 1984: The modulation of the sensitivity of the mammalian cochlea by low frequency tones. I. Primary afferent activity. The neural activity of single cells within the spiral ganglion of the first turn of the guinea pig cochlea has been recorded. Period histograms of the spike activity have been collected. The histograms were synchronised with a loud low frequency t...

Patuzzi, R.; Sellick, P.M.; Johnstone, B.M., 1984: The modulation of the sensitivity of the mammalian cochlea by low frequency tones 1. primary afferent activity. The neural activity of single cells within the spiral ganglion of the first turn of the guinea pig cochlea was recorded. Period histograms of the spike activity have been collected. The histograms were synchronized with a loud low frequency tone (...

Patuzzi, R.; Sellick, P.M., 1984: The modulation of the sensitivity of the mammalian cochlea by low frequency tones 2. inner hair cell receptor potentials. Intracellular receptor potentials from inner hair cells and extracellular potentials within the tunnel of Corti immediately outside inner hair cells have been recorded in the first turn of the guinea pig cochlea. The AC and DC components of these...

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Ruggero, M.A.; Robles, L.; Rich, N.C., 1986: Basilar membrane mechanics at the base of the chinchilla cochlea. II. Responses to low-frequency tones and relationship to microphonics and spike initiation in the VIII nerve. Low-frequency stimuli (40- to 1000-Hz tones) have been used to correlate the motion of the 8-to 9-kHz place of the chinchilla basilar membrane with the cochlear microphonics recorded at the round window and with the responses of auditory nerve fib...

Ruggero, MA.; Robles, L.; Rich, NC., 1986: Basilar membrane mechanics at the base of the chinchilla cochlea 2 Responses to low-frequency tones and relationship to microphonics and spike initiation in the VIII nerve. Low-frequency stimuli (40- to 1000-Hz tones) have been used to correlate the motion of the 8- to 9-kHz plce of the chinchilla basilar membrane with the cochlear microphonics recorded at the round window and with the responses of auditory nerve fib...

Ruggero, M.A.; Rich, N.C.; Recio, A.; Narayan, S.S.yamla; Robles, L., 1997: Basilar-membrane responses to tones at the base of the chinchilla cochlea. Basilar-membrane responses to single tones were measured, using laser velocimetry, at a site of the chinchilla cochlea located 3.5 mm from its basal end. Responses to low-level ( lt 10-20 dB SPL) characteristic-frequency (CF) tones (9-10 kHz) grow...

Wada, H.; Takeda, A.; Kawase, T., 2002: Timing of neural excitation in relation to basilar membrane motion in the basal region of the guinea pig cochlea during the presentation of low-frequency acoustic stimulation. In spite of many studies concerning auditory nerve action potentials, the timing of neural excitation in relation to basilar membrane (BM) motion is still not well understood. In this study, therefore, BM vibrations in the basal region of the guin...