Results 51 to 60 of about 41,910 (308)

Backward Masking, Information Processing, and Schizophrenia [PDF]

open access: yesSchizophrenia Bulletin, 1989
Many researchers have used backward masking to examine information-processing speed in schizophrenic subjects. The validity of this approach rests upon two main assumptions. One is that the mask effectively limits the time a previously presented stimulus is available for processing.
J R, Schuck, R G, Lee
openaire   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Backward Masked Snakes and Guns Modulate Spatial Attention

open access: yesEvolutionary Psychology, 2009
Fearful faces are important social cues that alert others of potential threat. Even backward masked fearful faces facilitate spatial attention. However, visual stimuli other than fearful faces can signal potential threat.
Joshua M. Carlson   +2 more
doaj   +1 more source

Visual processing: conscious until proven otherwise [PDF]

open access: yesRoyal Society Open Science, 2018
Unconscious perception, or perception without awareness, describes a situation where an observer's behaviour is influenced by a stimulus of which they have no phenomenal awareness.
Tarryn Balsdon, Colin W. G. Clifford
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Object Substitution Masking in Schizophrenia: An Event-Related Potential Analysis

open access: yesFrontiers in Psychology, 2013
Schizophrenia patients exhibit deficits on visual processing tasks, including visual backward masking, and these impairments are related to deficits in higher-level processes.
Jonathan K Wynn   +7 more
doaj   +1 more source

An fMRI study of parietal cortex involvement in the visual guidance of locomotion [PDF]

open access: yes, 2010
Locomoting through the environment typically involves anticipating impending changes in heading trajectory in addition to maintaining the current direction of travel.
Billington, Jac   +3 more
core   +1 more source

Association of Corticospinal Tract Asymmetry With Ambulatory Ability After Intracerebral Hemorrhage

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ambulatory ability after intracerebral hemorrhage (ICH) is important to patients. We tested whether asymmetry between ipsi‐ and contra‐lesional corticospinal tracts (CSTs) assessed by diffusion tensor imaging (DTI) is associated with post‐ICH ambulation.
Yasmin N. Aziz   +25 more
wiley   +1 more source

Probing feedforward and feedback contributions to awareness with visual masking and transcranial magnetic stimulation

open access: yesFrontiers in Psychology, 2014
A number of influential theories posit that visual awareness relies not only on the initial, stimulus-driven (i.e. feedforward) sweep of activation but also on recurrent feedback activity within and between brain regions. These theories of awareness draw
Evelina eTapia, Diane M Beck
doaj   +1 more source

Early Visual Processing Is Associated With Social Cognitive Performance in Recent-Onset Schizophrenia

open access: yesFrontiers in Psychiatry, 2020
BackgroundEarly-stage visual processing deficits are evident in chronic schizophrenia. Consistent with a cascade model of information processing, whereby early perceptual processes have downstream effects on higher-order cognition, impaired visual ...
Amanda McCleery   +13 more
doaj   +1 more source

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