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Frequency preference and attention effects across cortical depths in the human primary auditory cortex

Federico De Martino, Michelle Moerel, Kamil Ugurbil, Rainer Goebel, Essa Yacoub, Elia Formisano
2015 Proceedings of the National Academy of Sciences of the United States of America  
Here, we refer to columnar region as the cortical region where the variation of frequency with depth is significantly smaller compared with the frequency variation orthogonal to depth (i.e., across the  ...  Then, by analyzing the 3D spatial variations of these responses, we identified the PAC regions with a stable arrangement of BF across cortical depths.  ... 
doi:10.1073/pnas.1507552112 pmid:26668397 pmcid:PMC4702984 fatcat:6gj3hvm4gbdrdktkebu7m3piky

Human primary visual cortex shows larger population receptive fields for binocular disparity-defined stimuli [article]

Ivan Alvarez, Samuel A Hurley, Andrew John Parker, Holly Bridge
2021 bioRxiv   pre-print
Here we investigate the neural population receptive field properties of responses to binocular information in striate and extrastriate cortical visual areas using ultra-high field fMRI.  ...  These findings provide insight into the binocular receptive field properties underlying processing for human stereoscopic vision.  ...  Therefore, the BOLD signal reflects a population preference, which nevertheless reveals systematic variation in pRF size for disparity both within and across cortical visual regions.  ... 
doi:10.1101/2021.03.10.434843 fatcat:ptkxdsya5zevjn53vz3jzbrhxa

Population receptive field tuning properties of visual cortex during childhood

T.M. Dekker, D.S. Schwarzkopf, B. de Haas, M. Nardini, M.I. Sereno
2019 Developmental Cognitive Neuroscience  
Importantly, this in-depth characterisation of the pRF tuning profiles across childhood, paves the way for in-vivo-testing of atypical visual cortex development and plasticity.  ...  We tested to which extent this development might reflect improved spatial sensitivity of neuronal populations in visual cortex.  ...  We therefore tested if any age differences in population receptive fields might be masked by systematic differences in the cortical surface area of V1 across age groups.  ... 
doi:10.1016/j.dcn.2019.01.001 pmid:30777677 pmcid:PMC6969313 fatcat:mxhg4byz4fguzbvrvur5vbokoa

Human primary visual cortex shows larger population receptive fields for binocular disparity-defined stimuli

Ivan Alvarez, Samuel A. Hurley, Andrew J. Parker, Holly Bridge
2021 Brain Structure and Function  
Here we investigate the population receptive field properties of neural responses to binocular information in striate and extrastriate cortical visual areas using ultra-high field fMRI.  ...  These findings provide insight into the binocular receptive field properties underlying processing for human stereoscopic vision.  ...  Therefore, the BOLD signal reflects a population preference, which nevertheless reveals systematic variation in pRF size for disparity both within and across cortical visual regions.  ... 
doi:10.1007/s00429-021-02351-3 pmid:34347164 pmcid:PMC8541985 fatcat:5jcqboilanak5obxxynahc4owy

Population receptive field tuning properties of visual cortex during childhood [article]

Tessa M. Dekker, Dietrich Samuel Schwarzkopf, Ben de Haas, Marko Nardini, Martin I. Sereno
2017 bioRxiv   pre-print
One contributing factor could be the protracted development of spatial tuning of neuronal populations across the visual cortex.  ...  These results suggest that visuospatial perception in late childhood beyond age 6 years is not substantially limited by low-level spatial tuning properties of neuronal populations in visual cortex.  ...  We therefore tested if any age differences in population receptive fields might be masked by systematic differences in the cortical surface area of V1 across age groups.  ... 
doi:10.1101/213108 fatcat:pysxb3w5knhghdnumvlxxqea7u

Visual Spatial Characterization of Macaque V1 Neurons

Michael P. Sceniak, Michael J. Hawken, Robert Shapley
2001 Journal of Neurophysiology  
This study characterizes the spatial organization of excitation and inhibition that influences the visual responses of neurons in macaque monkey's primary visual cortex (V1).  ...  On average, the extent of length and width summation is approximately equal. Across the population, surround suppression is greatest in layer 4B and weakest in layer 6.  ...  Henrie for help in data collection and L. Smith for assistance in the histological reconstruction work and for help during physiology experiments. We also thank J. Cavanaugh for helpful discussions.  ... 
doi:10.1152/jn.2001.85.5.1873 pmid:11353004 fatcat:gqighceiyrbvrg3bujunseq5iq

Near-optimal combination of disparity across a log-polar scaled visual field

Guido Maiello, Manuela Chessa, Peter J. Bex, Fabio Solari, Lawrence Cormack
2020 PLoS Computational Biology  
We develop a foveated, log-polar model that mimics the processing of depth information in primary visual cortex and that can process disparity directly in the cortical domain representation.  ...  We further show that the visual system integrates disparity information across the visual field, in a near-optimal fashion.  ...  Cortical processing. In the human visual system, visual processing is performed by networks of units (cells) described by their receptive fields.  ... 
doi:10.1371/journal.pcbi.1007699 pmid:32275711 fatcat:3rcrz6c6a5ckrdn5ndm73mel5i

7 Tesla fMRI Reveals Systematic Functional Organization for Binocular Disparity in Dorsal Visual Cortex

N. R. Goncalves, H. Ban, R. M. Sanchez-Panchuelo, S. T. Francis, D. Schluppeck, A. E. Welchman
2015 Journal of Neuroscience  
Together, these findings indicate that human dorsal visual cortex contains selective cortical structures for disparity that may support the neural computations that underlie depth perception.  ...  from fMRI data captures known variations in human psychophysical performance.  ...  the human visual cortex.  ... 
doi:10.1523/jneurosci.3047-14.2015 pmid:25698743 pmcid:PMC4331627 fatcat:bcxc4arndfc6jkd4wcbo47zlam

Functional classes of neurons in primary auditory cortex of the cat distinguished by sensitivity to sound location

JC Middlebrooks, JD Pettigrew
1981 Journal of Neuroscience  
We have mapped receptive fields of single units in AI of the cat by varying systematically the location of a tonal stimulus within a sound field free of acoustic obstructions and reflections.  ...  Some of the properties of the measured receptive fields could be inferred by comparing the passive acoustical properties of the ear with binaural interactions previously described in AI.  ...  of the primary visual cortex, VI.  ... 
doi:10.1523/jneurosci.01-01-00107.1981 pmid:7346555 fatcat:m2sg4noskzc7dklvvhe5b3gpka

Large-Scale Gradients in Human Cortical Organization

Julia M. Huntenburg, Pierre-Louis Bazin, Daniel S. Margulies
2018 Trends in Cognitive Sciences  
Recent advances in mapping cortical areas in the human brain provide a basis for investigating the significance of their spatial arrangement.  ...  We propose that this gradient constitutes a core organizing axis of the human cerebral cortex, and describe an intrinsic coordinate system on its basis.  ...  For example, the distribution of MRI-based myelin across the cortical depth differs between visual and somatomotor regions [58] , in line with well-established histological findings [1] .  ... 
doi:10.1016/j.tics.2017.11.002 pmid:29203085 fatcat:a6hbo4jm4bbcbmg6hgmig2ifnq

The influence of non-neural factors on BOLD signal magnitude [article]

Jan W. Kurzawski, Omer Faruk Gulban, Keith W. Jamison, Jonathan Winawer, Kendrick Kay
2021 bioRxiv   pre-print
In a re-analysis of three neuroimaging datasets, we find large systematic inhomogeneities in the BOLD response magnitude in primary visual cortex (V1): stimulus-evoked BOLD responses, expressed in units  ...  We conclude that interpretation of variation in BOLD response magnitude across cortical locations should consider the influence of the potential confounding factors of cortical thickness, curvature, and  ...  For example, population receptive field models incorporate an explicit gain parameter that is distinct from other parameters (such as receptive field position) in the model.  ... 
doi:10.1101/2021.12.26.474185 fatcat:tr2klto5r5aafbrzefmtjupkhq

Optimal disparity estimation in natural stereo images

J. Burge, W. S. Geisler
2014 Journal of Vision  
The optimal processing predicts wellestablished properties of neurons in cortex. Estimation performance parallels important aspects of human performance.  ...  We simultaneously determine the optimal receptive field population for encoding natural stereo images of locally planar surfaces and the optimal nonlinear units for decoding the population responses into  ...  Interestingly, the binocular receptive field properties of cortical neurons, and human behavioral performance in disparity-related tasks, parallel those of the optimal estimator.  ... 
doi:10.1167/14.2.1 pmid:24492596 pmcid:PMC3912897 fatcat:tr7visbxpbebzmdnyct4r2nuou

Intrinsic coupling modes reveal the functional architecture of cortico-tectal networks

I. Stitt, E. Galindo-Leon, F. Pieper, G. Engler, E. Fiedler, T. Stieglitz, A. K. Engel
2015 Science Advances  
receptive fields.  ...  Cortico-tectal coupling at high frequencies was temporally parcellated by the phase of slow cortical oscillations and was strongest for SC-cortex channel pairs that displayed overlapping visual spatial  ...  Despite the SC receptive field being smaller than the mECoG receptive field, both recording sites responded to stimuli in similar locations in the visual field.  ... 
doi:10.1126/sciadv.1500229 pmid:26601226 pmcid:PMC4643805 fatcat:mpwsdx2hgbftrem2tq4g54nfya

Self-organization of cortical areas in the development and evolution of neocortex: a network growth model [article]

Nabil Imam, Barbara Finlay
2020 bioRxiv   pre-print
While the mechanisms generating the topographic organization of primary sensory areas in the neocortex are well-studied, what generates secondary cortical areas is virtually unknown.  ...  Using physical parameters representing primary and secondary visual areas as they vary from monkey to mouse, we derived a growth model to explore if characteristic features of secondary areas could be  ...  Figure 4 : 4 (a) As the model cortex grows in size, conserved rules of network growth generate systematic variations in cortical organization.  ... 
doi:10.1101/2020.05.13.094672 fatcat:bocd24bsrvbu5edipivag74osm

Laminar Organization of Working Memory Signals in Human Visual Cortex

Samuel J. D. Lawrence, Tim van Mourik, Peter Kok, Peter J. Koopmans, David G. Norris, Floris P. de Lange
2018 Social Science Research Network  
areas involved in memory lack the receptive field properties to represent such local visual information [4] .  ...  Additionally, this activity profile was specific to the internal generation of images: we observed no such variation across depth in V1 when visual cortex was stimulated by external stimuli.  ...  This work was supported Declaration of Interests The authors declare no competing financial interests.  ... 
doi:10.2139/ssrn.3155909 fatcat:lxm6va3zxrd3xdy7es3qkqeb5e
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