Results 41 to 50 of about 2,634,653 (301)

Pre-attentive segmentation in the primary visual cortex [PDF]

open access: yes, 2000
The activities of neurons in primary visual cortex have been shown to be significantly influenced by stimuli outside their classical receptive fields.
Zhaoping, L., Li, Z.
core   +1 more source

Paroxetine can improve primary visual cortex activity in a high-risk mouse model of schizophrenia

open access: yesBiotechnology & Biotechnological Equipment, 2020
Visual cortex functional deficits can be observed in schizophrenia patients and in individuals at high risk of schizophrenia. However, to date, few studies have investigated methods to improve these functional deficits.
Xinying Chen   +11 more
doaj   +1 more source

Amplification of trial-to-trial response variability by neurons in visual cortex [PDF]

open access: yes, 2004
The visual cortex responds to repeated presentations of the same stimulus with high variability. Because the firing mechanism is remarkably noiseless, the source of this variability is thought to lie in the membrane potential fluctuations that result ...
Carandini, M, Matteo Carandini
core   +2 more sources

Retinotopic activation in response to subjective contours in primary visual cortex. [PDF]

open access: yes, 2008
Objects in our visual environment are arranged in depth and hence there is a considerable amount of overlap and occlusion in the image they generate on the retina.
Hanke, Michael   +15 more
core   +1 more source

A survey of architecture and function of the primary visual cortex (V1) [PDF]

open access: yes, 2006
The largest visual area, known as the primary visual cortex or V1, has greatly contributed to the current understanding of mammalian and human visual pathways and their role in visual perception.
Bharath Anil A   +11 more
core   +1 more source

Studying the Role of Human Parietal Cortex in Visuospatial Attention with Concurrent TMS-fMRI [PDF]

open access: yes, 2010
Combining transcranial magnetic stimulation (TMS) with concurrent functional magnetic resonance imaging (fMRI) allows study of how local brain stimulation may causally affect activity in remote brain regions.
Bjoertomt, Otto   +14 more
core   +1 more source

Visual perception: Spotlight on the primary visual cortex [PDF]

open access: yesCurrent 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.
Sengpiel, F., Hubener, M.
openaire   +3 more sources

Spatial biology in cancer epigenetics

open access: yesMolecular Oncology, EarlyView.
Spatial epigenomics combines molecular profiling with tissue architecture to reveal how gene regulation is organized within intact tissues. In cancer, these technologies uncover the mechanisms driving tumor heterogeneity and microenvironmental interactions, opening new opportunities for biomarker discovery and precision medicine.
Eva Crespo‐García, Manel Esteller
wiley   +1 more source

Imaging plasticity and structure of cortical maps in cat and mouse visual cortex [PDF]

open access: yes, 2001
The study reported in the first part of this thesis utilized optical imaging of intrinsic signals to visualize changes in orientation maps in cat visual cortex induced by pairing a visual stimulus with an intracortical electrical stimulation.
Schuett, Sven
core   +1 more source

High-level visual prediction errors in early visual cortex.

open access: yesPLoS Biology
Perception is shaped by both incoming sensory input and expectations derived from our prior knowledge. Numerous studies have shown stronger neural activity for surprising inputs, suggestive of predictive processing.
David Richter   +2 more
doaj   +2 more sources

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