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Patterns of neural response in scene-selective regions of the human brain are affected by low-level manipulations of spatial frequency

David M. Watson, Mark Hymers, Tom Hartley, Timothy J. Andrews
2016 NeuroImage  
These results indicate that patterns of response in scene-selective regions are sensitive to the low-level properties of the image, particularly the spatial frequency content.  ...  The effect of filter varied across different scene-selective regions, suggesting differences in the way that scenes are represented in these regions.  ...  Acknowledgments We would like to thank Andre Gouws and Sam Johnson for their help at various stages of this project. Appendix A.  ... 
doi:10.1016/j.neuroimage.2015.08.058 pmid:26341028 fatcat:mko434cwjrfyhjz4nhbnxzdmtm

Contributions of low- and high-level properties to neural processing of visual scenes in the human brain

Iris I. A. Groen, Edward H. Silson, Chris I. Baker
2017 Philosophical Transactions of the Royal Society of London. Biological Sciences  
We thank members of the Laboratory of Brain and Cognition at the National Institutes of Mental Health for helpful discussions.  ...  Supporting this view, behavioural performance in rapid scene categorization is affected by manipulations of low-level features [43] [44] [45] [46] [47] and human participants are able to perceive global  ...  The low-level view is supported by the finding that responses in scene-selective regions can be elicited using minimal stimuli [25, 26] or can be explained by low-level models of scene representation  ... 
doi:10.1098/rstb.2016.0102 pmid:28044013 pmcid:PMC5206270 fatcat:zqjajesw3rbbrpijva5uye4yfu

Spatial frequency supports the emergence of categorical representations in visual cortex during natural scene perception

Diana C. Dima, Gavin Perry, Krish D. Singh
2018 NeuroImage  
Our results suggest that neural patterns from extrastriate visual cortex switch from low-level to categorical representations within 200 ms, highlighting the rapid cascade of processing stages essential  ...  Furthermore, dorsal and ventral stream areas reveal temporally and spatially overlapping representations of low and high-level layer activations extracted from a feedforward neural network.  ...  Acknowledgements The authors would like to thank Dr. Jiaxiang Zhang for helpful D.C. Dima et al. NeuroImage 179 (2018) 102-116  ... 
doi:10.1016/j.neuroimage.2018.06.033 pmid:29902586 pmcid:PMC6057270 fatcat:b7loogks5nefjdojo3qcz2jqyy

Electrocortical amplification for emotionally arousing natural scenes: The contribution of luminance and chromatic visual channels

Vladimir Miskovic, Jasna Martinovic, Matthias J. Wieser, Nathan M. Petro, Margaret M. Bradley, Andreas Keil
2015 Biological Psychology  
Emotionally arousing scenes readily capture visual attention, prompting amplified neural activity in sensory regions of the brain.  ...  Response amplification was present only for low spatial frequency, grayscale stimuli, and not for high spatial frequency, red/green stimuli.  ...  Acknowledgments This research was supported by National Institute of Mental Health Grant R01 MH097320 to AK. The authors would like to thank Hailey Bulls for assistance in data acquisition.  ... 
doi:10.1016/j.biopsycho.2015.01.012 pmid:25640949 pmcid:PMC4361366 fatcat:2pachdc7endy5n7m7mmzwnictq

Making Sense of Real-World Scenes

George L. Malcolm, Iris I.A. Groen, Chris I. Baker
2016 Trends in Cognitive Sciences  
Despite the seeming simplicity of the task, a multitude of scene properties across a range of different dimensions need to be processed, requiring the engagement of distributed brain regions.  ...  A recent surge of studies has investigated the processes enabling scene understanding, using increasingly complex stimuli and sophisticated analyses to highlight the visual features and brain regions involved  ...  Studies in non-human primates have also reported scene-selective regions [83] [84] [85] , as well as regions responsive to spatial landscapes [86] .  ... 
doi:10.1016/j.tics.2016.09.003 pmid:27769727 pmcid:PMC5125545 fatcat:wgwiyeoxirdqzbfmdmflqbsliu

Effects of affective content and motivational context on neural gain functions during naturalistic scene perception

Anna‐Lena Tebbe, Wendel M. Friedl, Georg W. Alpers, Andreas Keil
2021 European Journal of Neuroscience  
One index of low-level visual processing is the contrast response function (CRF), representing the change in neural or psychophysical gain with increasing stimulus contrast.  ...  Within the scenes, response gain was smaller for scenes high in emotional arousal, compared to low arousing scenes, consistent with interference effects of emotional content.  ...  By contrast, the response level was unaffected by the threat manipulation, suggesting that contrast sensitivity, but not the strength of the neural population responses is affected by the motivational  ... 
doi:10.1111/ejn.15194 pmid:33742482 fatcat:egp4yfdgunfxlmvfsxjsohckiu

Dissociations and associations between shape and category representations in the two visual pathways

Stefania Bracci, Hans Op de Beeck
2015 Journal of Vision  
Yet the relative contribution of these two factors in the representational content of visual areas is unclear.  ...  Furthermore, information about shape evolved from low-level pixel-based to high-level perceived shape following a posterior-to-anterior gradient similar to the shape-tocategory emergence.  ...  in high-level visual cortex reflects brain selectivity for visual features, including relatively low-level dimensions, such as spatial frequency and local orientation content, which are typically associated  ... 
doi:10.1167/15.12.1120 fatcat:arbxrtow2bhitodhzni7nlai6u

From Behavior to Neural Dynamics: An Integrated Theory of Attention

Timothy J. Buschman, Sabine Kastner
2015 Neuron  
Attention acts by increasing the strength of selected neural representations and preferentially routing them through the brain's large-scale network.  ...  The brain has a limited capacity and therefore needs mechanisms to selectively enhance the information most relevant to one's current behavior. We refer to these mechanisms as "attention."  ...  ACKNOWLEDGMENTS This project was supported by NIH RO1-MH64043, NIH RO1-EY017699, NIH R21-EY02565, and NSF BCS-1328270R01NS035710 to S.K. and NIH R00-MH092715, NIH DP2-EY025446, and ONR N000141410681 to  ... 
doi:10.1016/j.neuron.2015.09.017 pmid:26447577 pmcid:PMC4604109 fatcat:fmfclzwm2rhevirwyun6vib73a

Attention to natural auditory signals

Emily Caporello Bluvas, Timothy Q. Gentner
2013 Hearing Research  
Here we review the role of selective attention in modulating auditory responses to complex natural stimuli in humans.  ...  of auditory attention are implemented in single neurons or neural circuits.  ...  Humans and non-humans can solve species-typical versions of the CPP, but how these solutions are implemented in the activity patterns of single neurons, neural populations, and well-defined neural circuits  ... 
doi:10.1016/j.heares.2013.08.007 pmid:23981812 fatcat:aahc23yrdbgcbnnr3vng64m4me

Dissociations and Associations between Shape and Category Representations in the Two Visual Pathways

S. Bracci, H. Op de Beeck
2016 Journal of Neuroscience  
Yet the relative contribution of these two factors in the representational content of visual areas is unclear.  ...  Furthermore, information about shape evolved from low-level pixel-based to high-level perceived shape following a posterior-to-anterior gradient similar to the shape-to-category emergence.  ...  Acknowledgments This work was supported by the European Research Council (ERC-2011-Stg-284101), a federal research action (IUAP-P7/11), and Hercules grant ZW11_10.  ... 
doi:10.1523/jneurosci.2314-15.2016 pmid:26758835 pmcid:PMC6602035 fatcat:w7coh4oflrhxfbcjmqy3k2hrqa

Cortical mechanisms of spatial hearing

Kiki van der Heijden, Josef P. Rauschecker, Beatrice de Gelder, Elia Formisano
2019 Nature Reviews Neuroscience  
However, neural encoding of sound location is a complex process involving the computation and integration of multiple spatial cues that are not represented directly in the sensory organ (the cochlea).  ...  Humans and other animals use spatial hearing to rapidly localize events in the environment.  ...  By contrast, neural responses in rostral belt fields are less selective for space 39,40 . Similar spatial tuning properties have been observed in the auditory cortex of cats and ferrets.  ... 
doi:10.1038/s41583-019-0206-5 pmid:31467450 pmcid:PMC7081609 fatcat:ajwpggp5ovdm7hdeorcwwirlhq

Recent advances in understanding the auditory cortex

Andrew J. King, Sundeep Teki, Ben D.B. Willmore
2018 F1000Research  
Thus, in addition to being the locus for more complex sound selectivity, the auditory cortex is increasingly understood to be an integral part of the network of brain regions responsible for prediction  ...  In this review, we focus on three key areas that are contributing to this understanding: the sound features that are preferentially represented by cortical neurons, the spatial organization of those preferences  ...  Beyond tonotopy A tonotopic representation is defined by a systematic variation in the frequency selectivity of the neurons from low to high values.  ... 
doi:10.12688/f1000research.15580.1 fatcat:pmd4glqh45cmteqsc4iqjhnxjy

Functional Context Affects Scene Processing [article]

Elissa M Aminoff, Michael J Tarr
2020 bioRxiv   pre-print
In contrast, more semantically-biased scene representations in the RSC are likely to be less affected by top-down signals that carry information about the physical layout of a scene.  ...  As such, more spatially-biased scene representations in the OPA and the PPA are influenced by differences in top-down, perceptual expectations generated from context.  ...  For example, the responses of the scene-selective network of categorypreferred brain regions are affected by top-down information regarding learned contextual associations (Bar and Aminoff, 2003) .  ... 
doi:10.1101/2020.10.09.334102 fatcat:l3ddvfmykvfvzdgtlutkrrqb3a

The Impact of Density and Ratio on Object-Ensemble Representation in Human Anterior-Medial Ventral Visual Cortex

Jonathan S. Cant, Yaoda Xu
2014 Cerebral Cortex  
Object-ensemble processing in this region may thus depend on high-level visual information, such as object ratio, rather than low-level information, such as spacing/spatial frequency.  ...  Here we investigated the encoding of ensemble density in this brain region using fMRI-adaptation.  ...  This research was supported by grants from the National Science Foundation (0855112) and the National Institutes of Health (1R01EY022355) to Y.X., and a Natural Sciences and Engineering Research Council  ... 
doi:10.1093/cercor/bhu145 pmid:24964917 pmcid:PMC4626831 fatcat:kmyuhxtyibhdpl242zgtujfj6e

Neural correlates of auditory scene analysis and perception

Kate L. Christison-Lagay, Adam M. Gifford, Yale E. Cohen
2015 International Journal of Psychophysiology  
The auditory system is designed to transform acoustic information from low-level sensory representations into perceptual representations.  ...  These perceptual representations are the computational result of the auditory system's ability to group and segregate spectral, spatial and temporal regularities in the acoustic environment into stable  ...  KLCL, AMG, and YEC were supported by grants from NIDCD-NIH and from the Boucai Hearing Restoration Fund. AMG was supported by an IGERT NSF fellowship.  ... 
doi:10.1016/j.ijpsycho.2014.03.004 pmid:24681354 pmcid:PMC4176604 fatcat:kdgtjtkcbjdlxnwg4e432q6jp4
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