Results 1 to 10 of about 38 (35)

Microsaccades, Drifts, Hopf Bundle and Neurogeometry [PDF]

Journal of Imaging, 2022
The first part of the paper contains a short review of the image processing in early vision is static, when the eyes and the stimulus are stable, and in dynamics, when the eyes participate in fixation eye movements.
Dmitri Alekseevsky
doaj   +2 more sources

Multi-Frequency Image Completion via a Biologically-Inspired Sub-Riemannian Model with Frequency and Phase [PDF]

Journal of Imaging, 2021
We present a novel cortically-inspired image completion algorithm. It uses five-dimensional sub-Riemannian cortical geometry, modeling the orientation, spatial frequency and phase-selective behavior of the cells in the visual cortex.
Emre Baspinar
doaj   +2 more sources

Reconstructing the population activity of olfactory output neurons that innervate identifiable processing units [PDF]

Frontiers in Neural Circuits, 2008
We investigated the functional organization of the moth antennal lobe (AL), the primary olfactory network, using in vivo electrophysiological recordings and anatomical identification.
Shigehiro Namiki, Shigehiro Namiki, Shigehiro Namiki, Ryohei Kanzaki, Ryohei Kanzaki   +4 more
doaj   +2 more sources

Good continuation in 3D: the neurogeometry of stereo vision

Frontiers in Computer Science
Classical good continuation for image curves is based on 2D position and orientation. It is supported by the columnar organization of cortex, by psychophysical experiments, and by rich models of (differential) geometry.
Maria Virginia Bolelli, Maria Virginia Bolelli, Giovanna Citti, Alessandro Sarti, Steven W. Zucker   +4 more
doaj   +1 more source

A sub-Riemannian model of the motor cortex with Wasserstein distance

Frontiers in Computational Neuroscience
This study aims to better understand the functional geometry of the motor cortex, starting from different sources of experimental evidence. Recent studies have proved that cells of the primary motor cortex (M1) are sensitive to short hand trajectories ...
Jawad Ali, Giovanna Citti, Alessandro Sarti   +2 more
doaj   +1 more source

Geometry of the visual cortex with applications to image inpainting and enhancement

Graphical Models
Equipping the rototranslation group SE(2) with a sub-Riemannian structure inspired by the visual cortex V1, we propose algorithms for image inpainting and enhancement based on hypoelliptic diffusion. We innovate on previous implementations of the methods
Francesco Ballerin, Erlend Grong
doaj   +1 more source

Correction of topological errors in automated traces of neurites. [PDF]

Proc SPIE Int Soc Opt Eng, 2021
Kahaki SMM, Deng H, Stepanyants A.
europepmc   +1 more source

Retinal Processing: Insights from Mathematical Modelling. [PDF]

J Imaging, 2022
Cessac B.
europepmc   +1 more source

Structured sampling of olfactory input by the fly mushroom body. [PDF]

Curr Biol, 2022
Zheng Z, Li F, Fisher C, Ali IJ, Sharifi N, Calle-Schuler S, Hsu J, Masoodpanah N, Kmecova L, Kazimiers T, Perlman E, Nichols M, Li PH, Jain V, Bock DD.   +14 more
europepmc   +1 more source

Functional architecture of M1 cells encoding movement direction. [PDF]

J Comput Neurosci, 2022
Mazzetti C, Sarti A, Citti G.
europepmc   +1 more source