Results 31 to 40 of about 2,815,425 (281)

Longitudinal neurological analysis of moderate and severe pediatric cerebral visual impairment

open access: yesFrontiers in Human Neuroscience, 2022
IntroductionCerebral visual impairment (CVI) results from damage to cerebral visual processing structures. It is the most common cause of pediatric visual impairment in developed countries and rising in prevalence in developing nations.
Andres Jimenez-Gomez   +11 more
doaj   +1 more source

Coordinated optimization of visual cortical maps : 1. Symmetry-based analysis [PDF]

open access: yes, 2012
In the primary visual cortex of primates and carnivores, functional architecture can be characterized by maps of various stimulus features such as orientation preference (OP), ocular dominance (OD), and spatial frequency.
Heide, Dominik   +23 more
core   +1 more source

Cortically visually impaired children [PDF]

open access: yesBritish Journal of Ophthalmology, 1999
Editor,—While Hoyt and Fredrick rightly state the heterogeneous aetiology of cortical visual impairment (CVI) in children,1 we were disappointed in their bland and unjustified dismissal of the value of electrophysiological studies in these cases. They fail to quote any electrophysiological studies more recent than 1979 in their review, of which there ...
M P CLARKE   +3 more
openaire   +1 more source

Resting state cortical EEG rhythms in Alzheimer's disease: toward EEG markers for clinical applications: a review [PDF]

open access: yes, 2012
The human brain contains an intricate network of about 100 billion neurons. Aging of the brain is characterized by a combination of synaptic pruning, loss of cortico-cortical connections, and neuronal apoptosis that provoke an age-dependent decline of ...
Lizio, Roberta   +25 more
core   +1 more source

Cortical control of smooth pursuit eye movements [PDF]

open access: yes, 2007
In this PhD project, the functions of cortical regions that control smooth pursuit eye movements (SPEM) and visual attention were investigated. Combining behavioural (eye movement) measurements and functional magnetic resonance imaging (fMRI) the ...
Ohlendorf, Sabine
core   +1 more source

Cortical visual impairment: Diagnostic criteria and treatment elements [PDF]

open access: yesSpecijalna Edukacija i Rehabilitacija, 2019
Cortical visual impairment is a leading cause of difficulties in visual functioning in premature children and children with cerebral palsy. Bearing in mind that a large part of the brain is involved in regulating visual-perceptive activities, the factors
Vučinić Vesna   +3 more
doaj  

Resting state cortical electroencephalographic rhythms in covert hepatic encephalopathy and Alzheimer's disease [PDF]

open access: yes, 2013
Patients suffering from prodromal (i.e., amnestic mild cognitive impairment, aMCI) and overt Alzheimer's disease (AD) show abnormal cortical sources of resting state electroencephalographic (EEG) rhythms.
Nicola Marzano   +50 more
core   +1 more source

Cortical Visual Impairment: New Directions [PDF]

open access: yesOptometry and Vision Science, 2009
ABSTRACT Cortical visual impairment is the leading cause of bilateral low vision in children in the U.S., yet very little research is being performed to find new diagnostic measures and treatments. Dr.
openaire   +2 more sources

Electroencephalograms of Children with Permanent Cortical Visual Impairment [PDF]

open access: yesCanadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques, 1986
ABSTRACT:The electroencephalograms of 40 children with permanent cortical visual impairment (CVI) were studied. CVI was diagnosed in the presence of severe visual loss, normal or minimal ocular findings and clinical, electrodiagnostic and CT evidence of postgeniculate lesions involving the visual cortex. All patients had a multidisciplinary evaluation,
R, Robertson, J E, Jan, P K, Wong
openaire   +2 more sources

Association between precuneus volume and autobiographical memory impairment in posterior cortical atrophy: Beyond the visual syndrome

open access: yesNeuroImage: Clinical, 2018
Posterior cortical atrophy is a neurodegenerative syndrome characterised by progressive disruption of visual and perceptual processing, associated with atrophy in the parieto-occipital cortex.
Samrah Ahmed   +12 more
doaj   +1 more source

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