Results 101 to 110 of about 64,859 (345)

Spatiotemporal adaptation through corticothalamic loops: A hypothesis [PDF]

open access: yesVisual Neuroscience 17 (2000), pp. 107-118, 2002
The thalamus is the major gate to the cortex and its control over cortical responses is well established. Cortical feedback to the thalamus is, in turn, the anatomically dominant input to relay cells, yet its influence on thalamic processing has been difficult to interpret.
arxiv  

The futuristic manifolds of REM sleep

open access: yesJournal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Since one of its first descriptions 70 years ago, rapid eye movement sleep has continually inspired and excited new generations of sleep researchers. Despite significant advancements in understanding its neurocircuitry, underlying mechanisms and microstates, many questions regarding its function, especially beyond the early neurodevelopment ...
Liborio Parrino, Ivana Rosenzweig
wiley   +1 more source

Impact of visual callosal pathway is dependent upon ipsilateral thalamus

open access: yesNature Communications, 2020
The visual callosal pathway reciprocally connects mammalian visual cortices and is proposed to facilitate activation of binocular neurons. Here, the authors show that this pathway facilitates responses in both monocular and binocular neurons but these ...
Vishnudev Ramachandra   +3 more
doaj   +1 more source

Retinal oscillations carry visual information to cortex [PDF]

open access: yes, 2008
Thalamic relay cells fire action potentials that transmit information from retina to cortex. The amount of information that spike trains encode is usually estimated from the precision of spike timing with respect to the stimulus.
Hirsch, Judith A.   +8 more
core   +4 more sources

The Dynamics of Image Processing by Feature Maps in the Primary Visual Cortex [PDF]

open access: yesarXiv, 2005
The operational characteristics of a linear neural network image processing system based on the brain's vision system are investigated. The final stage of the network consists of edge detectors of various orienations arranged in a feature map, corresponding to the primary visual cortex, or V1.
arxiv  

Task-dependent modulation of the visual sensory thalamus assists visual-speech recognition [PDF]

open access: yes, 2018
The cerebral cortex modulates early sensory processing via feed-back connections to sensory pathway nuclei. The functions of this top-down modulation for human behavior are poorly understood. Here, we show that top-down modulation of the visual sensory thalamus (the lateral geniculate body, LGN) is involved in visual-speech recognition.
arxiv   +1 more source

Sleep neuroimaging: Review and future directions

open access: yesJournal of Sleep Research, EarlyView.
Summary Sleep research has evolved considerably since the first sleep electroencephalography recordings in the 1930s and the discovery of well‐distinguishable sleep stages in the 1950s. While electrophysiological recordings have been used to describe the sleeping brain in much detail, since the 1990s neuroimaging techniques have been applied to uncover
Mariana Pereira   +17 more
wiley   +1 more source

Localization of N-acyl phosphatidylethanolamine phospholipase D (NAPE-PLD) expression in mouse brain: A new perspective on N-acylethanolamines as Neural Signaling Molecules [PDF]

open access: yes, 2008
The definitive version is available at www3.interscience.wiley ...
Cravatt, BF   +3 more
core  

Effect of Correlated Lateral Geniculate Nucleus Firing Rates on Predictions for Monocular Eye Closure Versus Monocular Retinal Inactivation [PDF]

open access: yes, 2009
Monocular deprivation experiments can be used to distinguish between different ideas concerning properties of cortical synaptic plasticity. Monocular deprivation by lid suture causes a rapid disconnection of the deprived eye connected to cortical neurons
Blais, Brian S.   +2 more
core   +2 more sources

Receptive Field and Feature Map Formation in the Primary Visual Cortex via Hebbian Learning with Inhibitory Feedback [PDF]

open access: yesarXiv, 2005
A linear neural network is proposed for mamalian vision system in which backward connections from the primary visual cortex (V1) to the lateral geniculate nucleus play a key role. The backward connections control the flow of information from the LGN to V1 in such a way as to maximize the rate of transfer of information from the LGN to V1.
arxiv  

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