Predictive feedback to V1 dynamically updates with sensory input
Predictive feedback to V1 dynamically updates with sensory input
复制标题
V1 的预测反馈根据感官输入动态更新
DOI:
10.1101/180539
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Edwards G
中科院分区:
文献类型:
--
作者:
Edwards G
Predictive coding theories propose that the brain creates internal models of the environment to predict upcoming sensory input. Hierarchical predictive coding models of vision postulate that higher visual areas generate predictions of sensory inputs and feed them back to early visual cortex. In V1, sensory inputs that do not match the predictions lead to amplified brain activation, but does this amplification process dynamically update to new retinotopic locations with eye-movements? We investigated the effect of eye-movements in predictive feedback using functional brain imaging and eye-tracking whilst presenting an apparent motion illusion. Apparent motion induces an internal model of motion, during which sensory predictions of the illusory motion feed back to V1. We observed attenuated BOLD responses to predicted stimuli at the new post-saccadic location in V1. Therefore, pre-saccadic predictions update their retinotopic location in time for post-saccadic input, validating dynamic predictive coding theories in V1.
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影响因子:
1.7
作者:
P. Vetter;L. L. O. Sanders-L.;L. Muckli
通讯作者:
P. Vetter;L. L. O. Sanders-L.;L. Muckli
影响因子:
5.7
作者:
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Karl J. Friston
影响因子:
1.8
作者:
P. A. Kolers
通讯作者:
P. A. Kolers
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
D. Cahan
通讯作者:
D. Cahan
影响因子:
1.9
作者:
MUMFORD, D
通讯作者:
MUMFORD, D