Estimates of cortical column orientation improve MEG source inversion
NeuroImage, 2020 Determining the anatomical source of brain activity non-invasively measured from EEG or MEG sensors is challenging. In order to simplify the source localization problem, many techniques introduce the assumption that current sources lie on the cortical ...
James J. Bonaiuto +7 more
doaj +8 more sources
Patient Orientation Column [PDF]
Definitions, 2020 National Cancer Institute
semanticscholar +3 more sources
Journal of Orthopaedic Surgery and Research, 2022 Objective To explore the entry point, orientation, and fixation range of retrograde acetabular posterior column screw. Method The computed tomography data of 100 normal adult pelvises (50 males and 50 females, respectively) were collected and pelvis ...
Kequan Yu +5 more
doaj +2 more sources
Orientation Decoding Depends on Maps, Not Columns [PDF]
The Journal of Neuroscience, 2011 The representation of orientation in primary visual cortex (V1) has been examined at a fine spatial scale corresponding to the columnar architecture. We present functional magnetic resonance imaging (fMRI) measurements providing evidence for a topographic map of orientation preference in human V1 at a much coarser scale, in register with the angular ...
Jeremy Freeman +3 more
openalex +4 more sources
A stratigraphy-based method for reconstructing ice core orientation
Annals of Glaciology, 2021 Ever since the first deep ice cores were drilled, it has been a challenge to determine their original, in-situ orientation. In general, the orientation of an ice core is lost as the drill is free to rotate during transport to the surface. For shallow ice
Julien Westhoff +8 more
doaj +2 more sources
Subdomains within orientation columns of primary visual cortex [PDF]
Science Advances, 2019 Subdomains in orientation domains of primary visual cortex suggest the presence of a pinwheel-centered orientation hypercolumn.
Ming Li +5 more
openalex +3 more sources
The relation between the column density structures and the magnetic field orientation in the Vela C molecular complex [PDF]
, 2017 We statistically evaluated the relative orientation between gas column density structures, inferred from Herschel submillimetre observations, and the magnetic field projected on the plane of sky, inferred from polarized thermal emission of Galactic dust ...
J. D. Soler +29 more
openalex +3 more sources
Relation of cortical cell orientation selectivity to alignment of receptive fields of the geniculocortical afferents that arborize within a single orientation column in ferret visual cortex [PDF]
Journal of Neuroscience, 1991 Neurons in the primary visual cortex of higher mammals are arranged in columns, and the neurons in each column respond best to light-dark borders of particular orientations. The basis of cortical cell orientation selectivity is not known.
B. Chapman, KR Zahs, Michael P. Stryker
openalex +2 more sources
Comparison of orientation encoding across layers within single columns of primate V1 revealed by high-density recordings [PDF]
Frontiers in Neural CircuitsPrimary visual cortex (V1) has been the focus of extensive neurophysiological investigations, with its laminar organization serving as a crucial model for understanding the functional logic of neocortical microcircuits.
Shude Zhu +3 more
doaj +2 more sources
High-field fMRI unveils orientation columns in humans [PDF]
Proceedings of the National Academy of Sciences, 2008 Functional (f)MRI has revolutionized the field of human brain research. fMRI can noninvasively map the spatial architecture of brain function via localized increases in blood flow after sensory or cognitive stimulation. Recent advances in fMRI have led to enhanced sensitivity and spatial accuracy of the measured signals, indicating the possibility of ...
Essa Yacoub, Noam Harel, Kâmil Uǧurbil
openalex +4 more sources