Meta-adaptation in the auditory midbrain under cortical influence.
Meta-adaptation in the auditory midbrain under cortical influence.
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DOI:
10.1038/ncomms13442
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发表时间:
2016-11-24
影响因子:
16.6
通讯作者:
McAlpine, David
中科院分区:
文献类型:
--
作者:
Robinson, Benjamin L.;Harper, Nicol S.;McAlpine, David
Neural adaptation is central to sensation. Neurons in auditory midbrain, for example, rapidly adapt their firing rates to enhance coding precision of common sound intensities. However, it remains unknown whether this adaptation is fixed, or dynamic and dependent on experience. Here, using guinea pigs as animal models, we report that adaptation accelerates when an environment is re-encountered—in response to a sound environment that repeatedly switches between quiet and loud, midbrain neurons accrue experience to find an efficient code more rapidly. This phenomenon, which we term meta-adaptation, suggests a top–down influence on the midbrain. To test this, we inactivate auditory cortex and find acceleration of adaptation with experience is attenuated, indicating a role for cortex—and its little-understood projections to the midbrain—in modulating meta-adaptation. Given the prevalence of adaptation across organisms and senses, meta-adaptation might be similarly common, with extensive implications for understanding how neurons encode the rapidly changing environments of the real world. Neurons in the auditory midbrain are known to modify their firing rates in response to changes in sound intensity. Here the authors show that in guinea pigs, such modifications occur faster when neurons re-encounter the same environment, a phenomenon they term meta-adaptation.
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DOI:
10.1523/jneurosci.3585-09.2010
发表时间:
2010-01-20
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Gale SD;Perkel DJ
通讯作者:
Perkel DJ
影响因子:
3
作者:
Ben Coomber;Edwards, Darren;Palmer, Alan R.
通讯作者:
Palmer, Alan R.
影响因子:
3.4
作者:
Garcia-Lazaro, J. A.;Ho, S. S. M.;Schnupp, J. W. H.
通讯作者:
Schnupp, J. W. H.
影响因子:
3
作者:
Lomber, SG;Payne, BR;Horel, JA
通讯作者:
Horel, JA
影响因子:
2.5
作者:
Ingham, NJ;McAlpine, D
通讯作者:
McAlpine, D