| Popis: |
Changes in sound intensity generally produce dynamic or transient changes in the responses of auditory neurons in addition to sustained or steady‐state changes. These dynamic components appear to enhance the response to changes in intensity and potentially play an important role in intensity discrimination. The distinction between dynamic and steady‐state responsiveness appears to be minimal in responses of hair cells, significant in responses of auditory nerve fibers, and still greater in some units of the cochlear nucleus. Results will be reviewed comparing responses in the three regions to step, ramp, and sinusoidally modulated changes in intensity. Underlying mechanisms will be discussed that may be responsible for producing the observed increases in both the magnitude and operating range of the dynamic response components. |
