Results 21 to 30 of about 10,599 (209)

Emerging views of corticothalamic function [PDF]

open access: yesCurrent Opinion in Neurobiology, 2008
Although it is now generally accepted that the thalamus is more than a simple relay of sensory signals to the cortex, we are just beginning to gain an understanding of how corticothalamic feedback influences sensory processing. Results from an increasing number of studies across sensory systems and different species reveal effects of feedback both on ...
Farran, Briggs, W Martin, Usrey
openaire   +2 more sources

Laser-Induced Apoptosis of Corticothalamic Neurons in Layer VI of Auditory Cortex Impact on Cortical Frequency Processing

open access: yesFrontiers in Neural Circuits, 2021
Corticofugal projections outnumber subcortical input projections by far. However, the specific role for signal processing of corticofugal feedback is still less well understood in comparisonto the feedforward projection. Here, we lesioned corticothalamic
Katja Saldeitis   +13 more
doaj   +1 more source

Natural Frequencies of Human Corticothalamic Circuits [PDF]

open access: yesJournal of Neuroscience, 2009
The frequency tuning of a system can be directly determined by perturbing it and by observing the rate of the ensuing oscillations, the so called natural frequency. This approach is used, for example, in physics, in geology, and also when one tunes a musical instrument. In the present study, we employ transcranial magnetic stimulation (TMS) to directly
M. Rosanova   +5 more
openaire   +2 more sources

Corticothalamic gating of population auditory thalamocortical transmission in mouse

open access: yeseLife, 2021
The mechanisms that govern thalamocortical transmission are poorly understood. Recent data have shown that sensory stimuli elicit activity in ensembles of cortical neurons that recapitulate stereotyped spontaneous activity patterns.
Baher A Ibrahim   +5 more
doaj   +1 more source

Conditional expression in corticothalamic efferents reveals a developmental role for nicotinic acetylcholine receptors in modulation of passive avoidance behavior [PDF]

open access: yes, 2003
Prenatal nicotine exposure has been linked to attention deficit hyperactivity disorder and cognitive impairment, but the sites of action for these effects of nicotine are still under investigation. High-affinity nicotinic acetylcholine receptors (nAChRs)
Caldarone, Barbara J   +7 more
core   +2 more sources

Simultaneous visualization of extrinsic and intrinsic axon collaterals in Golgi-like detail for mouse corticothalamic and corticocortical cells: a double viral infection method

open access: yesFrontiers in Neural Circuits, 2014
Here we present a novel tracing technique to stain projection neurons in Golgi-like detail by double viral infection. We used retrograde lentiviral vectors and adeno-associated viral vectors (AAV) to drive TET-ON/TET-OFF system in neurons connecting two ...
Akiya eWatakabe   +11 more
doaj   +1 more source

Development of spatial coarse-to-fine processing in the visual pathway [PDF]

open access: yes, 2013
The sequential analysis of information in a coarse-to-fine manner is a fundamental mode of processing in the visual pathway. Spatial frequency (SF) tuning, arguably the most fundamental feature of spatial vision, provides particular intuition within the ...
Nirody, Jasmine A.
core   +2 more sources

Backward masking implicates cortico-cortical recurrent processes in convex figure context effects and cortico-thalamic recurrent processes in resolving figure-ground ambiguity

open access: yesFrontiers in Psychology, 2023
IntroductionPrevious experiments purportedly showed that image-based factors like convexity were sufficient for figure assignment. Recently, however, we found that the probability of perceiving a figure on the convex side of a central border was only ...
Mary A. Peterson   +4 more
doaj   +1 more source

Functional and Neural Mechanisms of Out-of-Body Experiences: Importance of Retinogeniculo-Cortical Oscillations [PDF]

open access: yes, 2016
Current research on the various forms of autoscopic phenomena addresses the clinical and neurological correlates of out-of-body experiences, autoscopic hallucinations,and heautoscopy.
Barnes, Vernon A.   +3 more
core   +1 more source

Towards reliable reconstruction of the mouse brain corticothalamic connectivity using diffusion MRI

open access: yesNeuroImage, 2023
Diffusion magnetic resonance imaging (dMRI) tractography has yielded intriguing insights into brain circuits and their relationship to behavior in response to gene mutations or neurological diseases across a number of species.
Tanzil Mahmud Arefin   +6 more
doaj   +1 more source

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