Results 81 to 90 of about 2,892,193 (407)
Attentional load and sensory competition in human vision: Modulation of fMRI responses by load fixation during task-irrelevant stimulation in the peripheral visual field. [PDF]
, 2005 Perceptual suppression of distractors may depend on both endogenous and exogenous factors, such as attentional load of the current task and sensory competition among simultaneous stimuli, respectively. We used functional magnetic resonance imaging (fMRI)
Dolan, R.J. +5 more
core
Hierarchical Features of Large-Scale Cortical Connectivity
, 2005 The analysis of complex networks has revealed patterns of organization in a variety of natural and artificial systems, including neuronal networks of the brain at multiple scales.
Costa, Luciano da F., Sporns, Olaf
core +2 more sources
Bistable Gestalts reduce activity in the whole of V1, not just the retinotopically predicted parts [PDF]
, 2012 Activity in the primary visual cortex reduces when certain stimuli can be perceptually organized as a unified Gestalt. This reduction could offer important insights into the nature of feedback computations within the human visual system; however, the ...
de-Wit, Lee H. +3 more
core +2 more sources
Visual cortex: Fatigue and adaptation [PDF]
Current Biology, 2000 Prolonged exposure to a visual pattern perturbs visual perception, affecting the appearance of subsequently viewed patterns. Recent results demonstrate that this visual adaptation is explained partly by a cellular mechanism acting in individual cortical neurons.
openaire +3 more sources
Visual perception: Spotlight on the primary visual cortex [PDF]
Current Biology, 1999 Visual search tasks appear to involve spatially selective attention to the target, but evidence for attentional modulation in the visual area with the most precise retinotopic organization V1 has been elusive. Recent imaging studies show that spatial attention can indeed enhance visual responses in human V1.
Mark Hübener, Frank Sengpiel
openaire +3 more sources
Time‐Frequency Fingerprint Analysis in SEEG Source‐Space to Identify the Epileptogenic Zone
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT This case study highlights the application of seizure fingerprint analysis in the source‐space of stereo‐EEG (SEEG) data to accurately localize the epileptogenic zone (EZ) in patients with complex cortical malformations. A 25‐year‐old female with extensive bilateral perisylvian polymicrogyria (PMG) presented with intractable focal seizures ...
Yash Shashank Vakilna +10 more
wiley +1 more source
Separate cortical stages in amodal completion revealed by functional magnetic resonance adaptation : research article [PDF]
, 2007 Background Objects in our environment are often partly occluded, yet we effortlessly perceive them as whole and complete. This phenomenon is called visual amodal completion. Psychophysical investigations suggest that the process of completion starts from
Muckli, Lars +2 more
core
Glial Fibrillary Acidic Protein Astrocytopathy Based on a Two‐Center Chinese Cohort Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Glial fibrillary acidic protein astrocytopathy (GFAP‐A) is a recently defined nosological form belonging to the class of autoimmune inflammatory disorders affecting the central nervous system (CNS). Here, we report the clinical and MRI characteristics, treatment, and prognosis of a GFAP‐A cohort from two centers in China.
Ti Wu +13 more
wiley +1 more source
Quantitative MRI evaluation of glaucomatous changes in the visual pathway.
PLoS ONE, 2018 BackgroundThe aims of this study were to investigate glaucomatous morphological changes quantitatively in the visual cortex of the brain with voxel-based morphometry (VBM), a normalizing MRI technique, and to clarify the relationship between glaucomatous
Mana Fukuda +8 more
doaj +1 more source
Brain Sciences, 2022 Damage to the visual cortex structures after high altitude exposure has been well clarified. However, changes in the neuronal activity and functional connectivity (FC) of the visual cortex after hypoxia/reoxygenation remain unclear.
Xinjuan Zhang +6 more
doaj +1 more source