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Correlated Firing Improves Stimulus Discrimination in a Retinal Model

Garrett T. Kenyon, James Theiler, John S. George, Bryan J. Travis, David W. Marshak
2004 Neural Computation  
In separate experiments in which neurons were synchronized in a stimulus-dependent manner without attendant oscillations, the Fano factor increased markedly with stimulus intensity, implying that stimulus-dependent  ...  Even for summation times too long to resolve synchronous inputs, gamma band oscillations in the input spike trains still contributed to improved discrimination by reducing the total spike count variability  ...  Figure 5 . 5 Firing correlations during the response peak allow improved discrimination of stimulus intensity. Same organization as in fig. 4.  ... 
doi:10.1162/0899766041941916 pmid:15476601 fatcat:eao6kj5k5nabjhbudlprsu7xc4

Extreme synergy: Spatiotemporal correlations enable rapid image reconstruction from computer-generated spike trains

Garrett T. Kenyon
2010 Journal of Vision  
Synergistic encoding was investigated across arrays of model neurons up to 32 Â 32 in extent, containing over 1 million pairwise correlations.  ...  eye movements on a biophysical model of primate outer retina.  ...  Spatiotemporal correlations supported not only improved performance on the ON/OFF pixel discrimination task but also mediated improved discrimination between different stimulus intensities, here separated  ... 
doi:10.1167/10.3.21 pmid:20377298 fatcat:eaj6yuggurgwhnqthommbwqazu

Blindfold learning of an accurate neural metric

Christophe Gardella, Olivier Marre, Thierry Mora
2018 Proceedings of the National Academy of Sciences of the United States of America  
Here we show how to build a distance map of responses from the structure of the population activity of retinal ganglion cells, allowing for the accurate discrimination of distinct visual stimuli from the  ...  retinal response.  ...  We thank David Schwab for insightful discussions on RBMs and Ulisse Ferrari for making his code for learning Ising models available.  ... 
doi:10.1073/pnas.1718710115 pmid:29531065 fatcat:aaz47nggqrdfdhirtpxgv4d7vm

Temporal Limits of Visual Motion Processing: Psychophysics and Neurophysiology

Bart Borghuis, Duje Tadin, Martin Lankheet, Joseph Lappin, Wim van de Grind
2019 Vision  
striking similarity in stimulus dependence between the temporal fidelity established in the retina and the temporal limits of human motion discrimination.  ...  Specifically, we examined the correspondence between the time scale at which cat retinal ganglion cells in vivo represent motion information and temporal thresholds for human motion discrimination.  ...  The input signals in our model were the recorded retinal spike trains.  ... 
doi:10.3390/vision3010005 pmid:31735806 pmcid:PMC6802765 fatcat:pah7rnh7gbf2nmh5ibqhyzugwi

Ignoring correlated activity causes a failure of retinal population codes under moonlight conditions [article]

Kiersten Ruda, Joel Zylberberg, Greg D. Field
2019 bioRxiv   pre-print
In particular, we consider the importance of accounting for noise correlations among RGCs to optimally read out retinal activity.  ...  In fact, assuming independence among a local population of RGCs produced worse decoding than using a single RGC, demonstrating a failure of population codes when correlated noise is substantial and ignored  ...  How could accounting for correlations improve retinal decoding?  ... 
doi:10.1101/2019.12.18.881201 fatcat:hscuruvmpvfkdkgn2ryzwg47yu

A Neural Computation for Visual Acuity in the Presence of Eye Movements

Xaq Pitkow, Haim Sompolinsky, Markus Meister, David Burr
2007 PLoS Biology  
To perform well, the brain must identify the retinal firing patterns induced by the stimulus while discounting similar patterns caused by spontaneous retinal activity.  ...  We derive a decision rule for using retinal spike trains to discriminate between two stimuli, given that their retinal image moves with an unknown random walk trajectory.  ...  XP and MM were supported by a National Institutes of Health grant. The work of HS was partially supported by a grant of the US-Israel Binational Science Foundation. Competing interests.  ... 
doi:10.1371/journal.pbio.0050331 pmid:18162043 pmcid:PMC2222970 fatcat:rdnlro6kf5aclluuinsrzotfnm

Neurophysiological correlates of color vision: A model

Arne Valberg, Thorstein Seim
2013 Psychology and Neuroscience  
Conventional Fourier analysis serves well in dealing with the discrimination data, but here we want to take a look at non-linearity, i.e., the neural correlates to perception of color phenomena for small  ...  A bottom-up, non-linear model combining cone signals in six types of cone-opponent cells in the lateral geniculate nucleus (LGN) of primates describes the phenomenological dimensions hue, color strength  ...  The cell receives its (prepotential) input from a retinal ganglion cell G. To model the firing rate N G of the retinal ganglion cell in imp/s, we use the equation N G = N L -N M , Eq.  ... 
doi:10.3922/j.psns.2013.2.09 fatcat:fhtzel55nzfrhejzecjkyjfrym

Functional Diversity in the Retina Improves the Population Code

Michael J. Berry II, Felix Lebois, Avi Ziskind, Rava Azeredo da Silveira
2019 Neural Computation  
Analyzing large populations of retinal ganglion cells, we found that the real, heterogeneous population can yield a discrimination error lower than the homogeneous population by several orders of magnitude  ...  Our approach was to build optimal decoders to discriminate among stimuli using the spiking output of a real, measured neural population and compare its performance against a matched, homogeneous neural  ...  Many of the ways in which the real light responses of retinal ganglion cells deviate from simplified models, like the LN model, introduce additional heterogeneity among neurons.  ... 
doi:10.1162/neco_a_01158 fatcat:4yrmke46ira2dfawpxt6yyipry

Oculomotor synchronization of visual responses in modeled populations of retinal ganglion cells

M. Poletti, M. Rucci
2008 Journal of Vision  
We show that the spatial organization of correlated activity in the model predicts the subjects' performance in the experiments.  ...  We have recently shown that fixational eye movements improve discrimination of the orientation of a high spatial frequency grating masked by low-frequency noise, but do not help with a low-frequency grating  ...  This theory makes the important prediction that fixational eye movements should improve detection/ discrimination of high spatial frequencies in the face of low-frequency noise (Rucci & Casile, 2005)  ... 
doi:10.1167/8.14.4 pmid:19146305 fatcat:tvovz7s67zflrmz2st3epypoia

Optogenetic vision restoration with high resolution [article]

Ulisse Ferrari, Stéphane Deny, Abhishek Sengupta, Romain Caplette, José-Alain Sahel, Deniz Dalkara, Serge Picaud, Jens Duebel, Olivier Marre
2018 arXiv   pre-print
This is a promising strategy to restore vision since optical targeting may be more precise than electrical stimulation with a retinal prothesis.  ...  A simple model based on this small receptive field predicted accurately their responses to complex stimuli.  ...  The receptive field (RF) of a retinal ganglion cell (RGC) is the particular region of the visual field in which a stimulus will trigger the firing of the cell.  ... 
arXiv:1811.06866v1 fatcat:ezmqtz57hffjrikw5hqeazmboe

Low error discrimination using a correlated population code

Greg Schwartz, Jakob Macke, Dario Amodei, Hanlin Tang, Michael J. Berry
2012 Journal of Neurophysiology  
Finally, decoders that approximated the correlation structure in the population by matching all pairwise correlations with a maximum entropy model fit to all 162 neurons were quite successful, especially  ...  Similar to previous studies, decoders that ignored correlation suffered only a modest drop in discrimination performance for groups of up to ϳ30 cells.  ...  A. da Silveira and W. Bialek  ... 
doi:10.1152/jn.00564.2011 pmid:22539825 pmcid:PMC3424080 fatcat:rp2rza56crhqjgtecg6v57dqni

Coordinated dynamic encoding in the retina using opposing forms of plasticity

David B Kastner, Stephen A Baccus
2011 Nature Neuroscience  
In the retina, a transition from a high to a low contrast environment reveals this tradeoff, when the decreased sensitivity caused by high contrast prevents the neuron from firing for some time after the  ...  One population of cells exhibited sensitization-a persistent elevated sensitivity following a strong stimulus.  ...  We then examined this improvement in discriminability in the full population at each separate stimulus, and found that the addition of sensitizing cells to a population of adapting cells enhanced the discriminability  ... 
doi:10.1038/nn.2906 pmid:21909086 pmcid:PMC3359137 fatcat:i5cxeztnb5ec7dly6gbk33pl2e

Long-range sensitization in the vertebrate retina and human perception [article]

Benjamin Naecker, Stephen A Baccus
2018 bioRxiv   pre-print
We further show that long-range sensitization parallels a novel perceptual effect in humans, in which surround stimulation subsequently improves discrimination of a small central stimulus.  ...  We conclude that the retina uses long-range statistics of the visual world to better encode local visual features, and that such improved encoding may play a role in perception.  ...  Surround stimulation improves local stimulus discriminability The observed increases in firing as a function of contrast may allow similar stimuli to be more easily discriminated.  ... 
doi:10.1101/492033 fatcat:cdszhddmgjdqpm4ryk73q2pcbu

Temporal Firing Patterns of Purkinje Cells in the Cerebellar Ventral Paraflocculus During Ocular Following Responses in Monkeys II. Complex Spikes

Yasushi Kobayashi, Kenji Kawano, Aya Takemura, Yuka Inoue, Toshihiro Kitama, Hiroaki Gomi, Mitsuo Kawato
1998 Journal of Neurophysiology  
single climbing fiber Temporal firing patterns of Purkinje cells in cerebellar ventral parainput that generates complex spikes (CS) at rates that do flocculus during ocular following responses in monkeys  ...  The type of information transmitted by the ultra-low of cerebellar motor learning propose that complex spikes (CS) CS firing rate and the effect of a signal with such low tempoprovide essential error signals  ...  could be an (during several tens of milliseconds) improves the signalincrease in firing, and CSs and SSs can be discriminated by to-noise ratio while sacrificing the high temporal resolution the nuclei  ... 
doi:10.1152/jn.1998.80.2.832 pmid:9705472 fatcat:t3cbpsz5ifcljmk2dsjzchfjce

Triplet correlations among similarly tuned cells impact population coding

Natasha A. Cayco-Gajic, Joel Zylberberg, Eric Shea-Brown
2015 Frontiers in Computational Neuroscience  
For each value of triplet correlations, we estimate the performance of the neural population on a two-stimulus discrimination task.  ...  A vast body of work has explored how firing rates in individual cells and correlations in the spikes of cell pairs impact coding.  ...  We find that triplet correlations can indeed strongly improve stimulus encoding, if they have a stimulus-dependent structure.  ... 
doi:10.3389/fncom.2015.00057 pmid:26042024 pmcid:PMC4435073 fatcat:6zm2iysgejcj5o4b4grk6xkqga
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