TY  - JOUR
A1  - Yiling, Yang
A1  - Shapcott, Katharine
A1  - Peter, Alina
A1  - Klon-Lipok, Johanna
A1  - Xuhui, Huang
A1  - Lazar, Andreea
A1  - Singer, Wolf
T1  - Robust encoding of natural stimuli by neuronal response sequences in monkey visual cortex
T2  - Nature Communications
N2  - Parallel multisite recordings in the visual cortex of trained monkeys revealed that the responses of spatially distributed neurons to natural scenes are ordered in sequences. The rank order of these sequences is stimulus-specific and maintained even if the absolute timing of the responses is modified by manipulating stimulus parameters. The stimulus specificity of these sequences was highest when they were evoked by natural stimuli and deteriorated for stimulus versions in which certain statistical regularities were removed. This suggests that the response sequences result from a matching operation between sensory evidence and priors stored in the cortical network. Decoders trained on sequence order performed as well as decoders trained on rate vectors but the former could decode stimulus identity from considerably shorter response intervals than the latter. A simulated recurrent network reproduced similarly structured stimulus-specific response sequences, particularly once it was familiarized with the stimuli through non-supervised Hebbian learning. We propose that recurrent processing transforms signals from stationary visual scenes into sequential responses whose rank order is the result of a Bayesian matching operation. If this temporal code were used by the visual system it would allow for ultrafast processing of visual scenes.
Y1  - 2023
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/83212
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-832123
SN  - 2041-1723
VL  - 14
IS  - 3021
ER  -