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Cascaded effects of spatial adaptation in the early visual system.

Dhruv, NT; Carandini, M; (2014) Cascaded effects of spatial adaptation in the early visual system. Neuron , 81 (3) 529 - 535. 10.1016/j.neuron.2013.11.025. Green open access

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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.

Type: Article
Title: Cascaded effects of spatial adaptation in the early visual system.
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.neuron.2013.11.025
Publisher version: http://dx.doi.org/10.1016/j.neuron.2013.11.025
Language: English
Additional information: © 2014 The Authors. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Ophthalmology
URI: https://discovery.ucl.ac.uk/id/eprint/1423563
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