Abstract：
:Virtually all stages of the visual system exhibit adaptation: neurons adjust their responses based on the recent stimulus history. While some of these adjustments occur at specific stages, others may be inherited from earlier stages. How do adaptation effects cascade along the visual system? We measured spatially selective adaptation at two successive stages in the mouse visual system: visual thalamus (LGN) and primary visual cortex (V1). This form of adaptation affected both stages but in drastically different ways: in LGN it only changed response gain, while in V1 it also shifted spatial tuning away from the adaptor. These effects, however, are reconciled by a simple model whereby V1 neurons summate LGN inputs with a fixed, unadaptable weighting profile. These results indicate that adaptation effects cascade through the visual system, that this cascading can shape selectivity, and that the rules of integration from one stage to the next are not themselves adaptable.
journal_name
Neuronjournal_title
Neuronauthors
Dhruv NT,Carandini Mdoi
10.1016/j.neuron.2013.11.025subject
Has Abstractpub_date
2014-02-05 00:00:00pages
529-35issue
3eissn
0896-6273issn
1097-4199pii
S0896-6273(13)01093-3journal_volume
81pub_type
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