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Neuroscience and Behavioral Physiology

, Volume 22, Issue 2, pp 132–137 | Cite as

Development of auditory sensitivity of altricial birds: absolute thresholds of the generation of evoked potentials

  • L. I. Aleksandrov
  • L. P. Dmitrieva
Article

Abstract

The thresholds of the generation of EP in the L field of two to nine day old pied flycatcher nestlings in response to monotonal bursts of varied frequency were investigated. The entire range of auditory sensitivity was divided into three channels on the basis of the character of the age-related dynamics of the thresholds (two to nine days of life): low-frequency (0.3–1.6 kHz), middle-(1.5–4.0 kHz), and high-frequency (5.0–8.0 kHz). Widening of the auditory range in the direction of high frequencies on the 4th to 5th days of nest life was demonstrated. It was shown that the development of auditory sensitivity continues in all three channels in the postembryonic period (two to nine days after hatching), and that each of these is characterized by its own thresholds time course.

Keywords

Entire Range Varied Frequency Absolute Threshold Threshold Time Auditory Sensitivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • L. I. Aleksandrov
    • 1
  • L. P. Dmitrieva
    • 1
  1. 1.Institute of Higher Nervous Activity and NeurophysiologyAcademy of Sciences of the USSRMoscow

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