What question did this study set out to answer?

To determine how chronic monaural ear occlusion during development influences the tuning of optic tectum neurons to interaural level and time difference cues.

September 1, 1992Journal of NeuroscienceOpen Access

Adaptive adjustment of unit tuning to sound localization cues in response to monaural occlusion in developing owl optic tectum

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Authors

JMJoachim MogdansUniversity of Bonn EKEI KnudsenStanford University

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Implication

Experimental study demonstrates adaptive shifts in auditory spatial tuning in developing barn owls, indicating central nervous system plasticity in sound localization circuits.

Key Points

To determine how chronic monaural ear occlusion during development influences the tuning of optic tectum neurons to interaural level and time difference cues.
Barn owls received monaural ear occlusion starting at one month of age.
Electrophysiological recordings measured ILD and ITD tuning in optic tectum units two to four months after occlusion, comparing them with equivalent visual receptive fields in normal owls (N = 5 owls analyzed).
Tectal units systematically shifted tuning toward the unoccluded ear, with an average shift of 9 dB in ILD tuning (n = 396) and 40 microseconds in ITD tuning (n = 414).
Four out of five owls exhibited asymmetric adjustments between brain hemispheres, showing significantly larger and more systematic map shifts ipsilateral to the occlusion.

Cite This Study

Mogdans et al. (1992) studied this question.

synapsesocial.com/papers/6a706f4ffe4101aa97e0288b https://doi.org/10.1523/jneurosci.12-09-03473.1992

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Implication

Experimental study demonstrates adaptive shifts in auditory spatial tuning in developing barn owls, indicating central nervous system plasticity in sound localization circuits.

Adaptive adjustment of unit tuning to sound localization cues in response to monaural occlusion in developing owl optic tectum

Discussion

Member takes

Implication

Key Points

Cite This Study

Adaptive adjustment of unit tuning to sound localization cues in response to monaural occlusion in developing owl optic tectum

Discussion

Member takes

Implication

Key Points

Cite This Study

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