Results 81 to 90 of about 2,634,653 (301)

Anodal transcranial direct current stimulation does not alter GABA concentration or functional connectivity in the normal visual cortex

open access: yesFrontiers in Neuroscience
IntroductionAnodal direct current stimulation (a-tDCS) of the visual cortex is a potential rehabilitation tool for vision disorders such as amblyopia and macular degeneration. However, the underlying neural mechanisms are currently unknown.
Dania Abuleil   +8 more
doaj   +1 more source

Remapping in Human Visual Cortex [PDF]

open access: yesJournal of Neurophysiology, 2007
With each eye movement, stationary objects in the world change position on the retina, yet we perceive the world as stable. Spatial updating, or remapping, is one neural mechanism by which the brain compensates for shifts in the retinal image caused by voluntary eye movements.
Elisha P, Merriam   +2 more
openaire   +2 more sources

The role of the perirhinal cortex in visual learning in the rat [PDF]

open access: yes, 1999
The aim of this thesis was to investigate the role of the perirhinal cortex in visual discrimination learning in the rat. Experiment one measured postoperative reacquisition of two sets of concurrent visual discriminations acquired at different time ...
Machin, Penelope Elizabeth
core  

Distributed fading memory for stimulus properties in the primary visual cortex [PDF]

open access: yes, 2009
It is currently not known how distributed neuronal responses in early visual areas carry stimulus-related information. We made multielectrode recordings from cat primary visual cortex and applied methods from machine learning in order to analyze the ...
Nikolić, Danko   +11 more
core   +1 more source

Prodromal Lewy Body Disorder Features in REM Sleep Behavior Disorder With Biomarker‐Defined Synucleinopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal state for Lewy body disorders and exhibits biological heterogeneity that may influence clinical expression and progression. We examined clinical features in individuals with iRBD and biomarker‐defined synucleinopathy.
Daniel Weintraub   +24 more
wiley   +1 more source

Category-specific responses to faces and objects in primate auditory cortex

open access: yesFrontiers in Systems Neuroscience, 2008
Auditory and visual signals often occur together, and the two sensory channels are known to infl uence each other to facilitate perception. The neural basis of this integration is not well understood, although other forms of multisensory infl uences have
Kari L Hoffman   +6 more
doaj   +1 more source

Postnatal development of intrinsic and synaptic properties transforms signaling in the Layer 5 excitatory neural network of the visual cortex [PDF]

open access: yes, 2011
Information flow in neocortical circuits is regulated by two key parameters: intrinsic neuronal properties and the short-term activity-dependent plasticity of synaptic transmission.
Etherington, Sarah J.   +5 more
core   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni   +19 more
wiley   +1 more source

Exploring BOLD changes during spatial attention in non-stimulated visual cortex [PDF]

open access: yes, 2009
Blood oxygen level-dependent (BOLD) responses were measured in parts of primary visual cortex that represented unstimulated visual field regions at different distances from a stimulated central target location.
Andreas Kleinschmidt   +9 more
core   +2 more sources

Spatial and Volumetric Characteristics of Glioblastoma: Associations With Clinical Presentation and Survival

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou   +16 more
wiley   +1 more source

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