Results 71 to 80 of about 2,971,387 (406)

Human Posterior Parietal Cortex Plans Where to Reach and What to Avoid [PDF]

open access: yes, 2010
In this time-resolved functional magnetic resonance imaging (fMRI) study, we aimed to trace the neuronal correlates of covert planning processes that precede visually guided motor behavior.
Andersen, Richard A.   +3 more
core   +3 more sources

Purkinje Cell Loss in Essential Tremor: Collective Data From 215 Brains Over a 21‐Year Period

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Essential tremor is a highly prevalent movement disorder. Pathological changes observed in essential tremor cerebella center around Purkinje cells and neighboring neuronal populations. Postmortem studies have variably, but not always, shown reduced Purkinje cell counts in essential tremor compared to controls.
Chloë A. Kerridge   +4 more
wiley   +1 more source

Enhanced auditory responses in visual cortex of blind rats using intrinsic optical signal imaging

open access: yesScientific Reports
Functional maturation of the visual cortex is induced by visual experiences during critical periods. Blind animals and humans exhibit improved auditory abilities after losing their vision.
Shu Maruoka   +11 more
doaj   +1 more source

Exosome Proteomics of SOD1D90A Mutation Suggest Early Disease Mechanisms, and FN1 as a Biomarker

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Amyotrophic lateral sclerosis (ALS) is a neuromuscular disease. Super oxide dismutase 1 (SOD1) gene mutations cause ALS, and the D90A mutation is associated with primarily upper motor neuron (UMN) loss. Objective Our goal is to reveal the early cellular events in ALS pathology and identify potential pharmacokinetic biomarkers, using well ...
Mukesh Gautam   +6 more
wiley   +1 more source

Disrupted Dynamic Functional Connectivity of the Visual Network in Episodic Patients with Migraine without Aura

open access: yesNeural Plasticity, 2022
Background. Visual symptoms are common in patients with migraine, even in interictal periods. The purpose was to assess the association between dynamic functional connectivity (dFC) of the visual cortex and clinical characteristics in migraine without ...
Heng-Le Wei   +9 more
doaj   +1 more source

Emotional modulation of visual cortex activity: A functional nearinfrared spectroscopy study [PDF]

open access: yes, 2009
Functional neuroimaging and electroencephalography reveal emotional effects in early visual cortex. Here, we used fNIRS to examine haemodynamic responses evoked by neutral, positive and negative emotional pictures, matched for brightness, contrast, hue,
Gray, Marcus A.   +3 more
core   +2 more sources

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez   +12 more
wiley   +1 more source

Hierarchical Features of Large-Scale Cortical Connectivity

open access: yes, 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

Specificity and randomness in the visual cortex [PDF]

open access: yesCurrent Opinion in Neurobiology, 2007
Research on the functional anatomy of visual cortical circuits has recently zoomed in from the macroscopic level to the microscopic. High-resolution functional imaging has revealed that the functional architecture of orientation maps in higher mammals is built with single-cell precision.
Kenichi, Ohki, R Clay, Reid
openaire   +2 more sources

Spatial clustering of tuning in mouse primary visual cortex

open access: yesNature Communications, 2016
The primary visual cortex of higher mammals is organized into two-dimensional maps, where the preference of cells for stimulus parameters is arranged regularly on the cortical surface.
D. Ringach   +5 more
semanticscholar   +1 more source

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