Results 51 to 60 of about 2,175,907 (298)

Temporal discrimination: Mechanisms and relevance to adult-onset dystonia [PDF]

open access: yes, 2017
Temporal discrimination is the ability to determine that two sequential sensory stimuli are separated in time. For any individual, the temporal discrimination threshold (TDT) is the minimum interval at which paired sequential stimuli are perceived as ...
Beck, Rebecca   +7 more
core   +1 more source

Effective connectivity in subcortical visual structures in de novo Patients with Parkinson’s Disease

open access: yesNeuroImage: Clinical, 2022
Background: Parkinson’s disease (PD) manifests with the appearance of non-motor symptoms before motor symptoms onset. Among these, dysfunctioning visual structures have recently been reported to occur at early disease stages.
Emmanuelle Bellot   +5 more
doaj   +1 more source

Dissecting the circuit for blindsight to reveal the critical role of pulvinar and superior colliculus

open access: yesNature Communications, 2019
In patients with damage to the primary visual cortex (V1), residual vision can guide goal-directed movements to targets in the blind field without awareness. This phenomenon has been termed blindsight, and its neural mechanisms are controversial.
M. Kinoshita   +6 more
semanticscholar   +1 more source

Saccade learning with concurrent cortical and subcortical basal ganglia loops [PDF]

open access: yes, 2013
The Basal Ganglia is a central structure involved in multiple cortical and subcortical loops. Some of these loops are believed to be responsible for saccade target selection.
Girard, Benoît   +2 more
core   +3 more sources

Functional cell types in the mouse superior colliculus

open access: yeseLife, 2023
The superior colliculus (SC) represents a major visual processing station in the mammalian brain that receives input from many types of retinal ganglion cells (RGCs). How many parallel channels exist in the SC, and what information does each encode? Here,
Ya-tang Li, Markus Meister
doaj   +1 more source

A projection specific logic to sampling visual inputs in mouse superior colliculus

open access: yeseLife, 2019
Using sensory information to trigger different behaviors relies on circuits that pass through brain regions. The rules by which parallel inputs are routed to downstream targets are poorly understood.
Katja Reinhard   +5 more
semanticscholar   +1 more source

Motor Functions of the Superior Colliculus [PDF]

open access: yesAnnual Review of Neuroscience, 2011
The mammalian superior colliculus (SC) and its nonmammalian homolog, the optic tectum, constitute a major node in processing sensory information, incorporating cognitive factors, and issuing motor commands. The resulting action—to orient toward or away from a stimulus—can be accomplished as an integrated movement across oculomotor, cephalomotor, and ...
Neeraj J, Gandhi, Husam A, Katnani
openaire   +2 more sources

Stimulus edges induce orientation tuning in superior colliculus

open access: yesNature Communications, 2023
Orientation columns exist in the primary visual cortex (V1) of cat and primates but not mouse. Intriguingly, some recent studies reported the presence of orientation and direction columns in the mouse superficial superior colliculus (sSC), while others ...
Yajie Liang   +3 more
doaj   +1 more source

Involvement of the Superior Colliculus in SIDS Pathogenesis

open access: yesBiomedicines, 2023
The aim of this study was to investigate the involvement of the mesencephalic superior colliculus (SC) in the pathogenetic mechanism of SIDS, a syndrome frequently ascribed to arousal failure from sleep.
Anna M. Lavezzi   +3 more
doaj   +1 more source

Population Coding of Interaural Time Differences in Gerbils and Barn Owls [PDF]

open access: yes, 2010
Interaural time differences (ITDs) are the primary cue for the localization of low-frequency sound sources in the azimuthal plane. For decades, it was assumed that the coding of ITDs in the mammalian brain was similar to that in the avian brain, where ...
Grothe, Benedikt   +2 more
core   +1 more source

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