Search results

Items from 1 to 20 out of 532 results

article

Dissociable effects of anodal and cathodal tDCS reveal distinct functional roles for right parietal cortex in the detection of single and competing stimuli

Hannah L. Filmer, Paul E. Dux, Jason B. Mattingley, H.L. Filmer, more

Neuropsychologia > 2015 > 74 > Complete > 120-126

Spatial attention can be used to direct neural processing resources to a subset of task-relevant or otherwise salient items within the environment. Such selective processes are particularly important for resolving competition between multiple stimuli. Deficits in processing single stimuli can arise after damage to parietal, frontal and temporal brain regions, as is typical in patients with contralesional...

article

Smartphone App to Detect Pathological Myopia Using Spatial Attention and Squeeze‐Excitation Network as a Classifier and Segmentation Encoder

Sarvat Ali, Shital Raut

International Journal of Imaging Systems and Technology > 34 > 5 > n/a - n/a

Pathological myopia (PM) is a worldwide visual health concern that can cause irreversible vision impairment. It affects up to 20 crore population, causing social and economic burdens. Initial screening of PM using computer‐aided diagnosis (CAD) can prevent loss of time and finances for intricate treatments later on. Current research works utilizes complex models that are too resource‐intensive or...

article

Attention modulates early visual processing: An association between subjective contrast perception and early C1 ERP component

Wang‐Nan Pan, Yu‐Wan Zhao, Zi‐Xi Luo, Yue Chen, more

Psychophysiology > 61 > 5 > n/a - n/a

The question of whether spatial attention can modulate initial afferent activity in area V1, as measured by the earliest visual event‐related potential (ERP) component “C1”, is still the subject of debate. Because attention always enhances behavioral performance, previous research has focused on finding evidence of attention‐related enhancements in visual neural responses. However, recent psychophysical...

article

Dynamic alpha power modulations and slow negative potentials track natural shifts of spatio‐temporal attention

Charline Peylo, Carola Romberg‐Taylor, Larissa Behnke, Paul Sauseng

Psychophysiology > 61 > 5 > n/a - n/a

Alpha power modulations and slow negative potentials have previously been associated with anticipatory processes in spatial and temporal top‐down attention. In typical experimental designs, however, neural responses triggered by transient stimulus onsets can interfere with attention‐driven activity patterns and our interpretation of such. Here, we investigated these signatures of spatio‐temporal attention...

article

Children with dyslexia show no deficit in exogenous spatial attention but show differences in visual encoding

Mahalakshmi Ramamurthy, Alex L. White, Jason D. Yeatman

Developmental Science > 27 > 3 > n/a - n/a

In the search for mechanisms that contribute to dyslexia, the term “attention” has been invoked to explain performance in a variety of tasks, creating confusion since all tasks do, indeed, demand “attention.” Many studies lack an experimental manipulation of attention that would be necessary to determine its influence on task performance. Nonetheless, an emerging view is that children with dyslexia...

article

Eye movements reveal that young school children shift attention when solving additions and subtractions

Nicolas Masson, Valérie Dormal, Martine Stephany, Christine Schiltz

Developmental Science > 27 > 2 > n/a - n/a

Adults shift their attention to the right or to the left along a spatial continuum when solving additions and subtractions, respectively. Studies suggest that these shifts not only support the exact computation of the results but also anticipatively narrow down the range of plausible answers when processing the operands. However, little is known on when and how these attentional shifts arise in childhood...

article

Distinct patterns of spatial attentional modulation of steady‐state visual evoked magnetic fields (SSVEFs) in subdivisions of the human early visual cortex

Stephan Moratti, Christopher Gundlach, Javier Echegaray, Matthias M. Müller

Psychophysiology > 61 > 2 > n/a - n/a

In recent years, steady‐state visual evoked potentials (SSVEPs) became an increasingly valuable tool to investigate neural dynamics of competitive attentional interactions and brain–computer interfaces. This is due to their good signal‐to‐noise ratio, allowing for single‐trial analysis, and their ongoing oscillating nature that enables to analyze temporal dynamics of facilitation and suppression....

article

Involuntary shifts of spatial attention contribute to distraction—Evidence from oscillatory alpha power and reaction time data

Annekathrin Weise, Thomas Hartmann, Fabrice Parmentier, Nathan Weisz, more

Psychophysiology > 60 > 10 > n/a - n/a

Imagine you are focusing on the traffic on a busy street to ride your bike safely when suddenly you hear the siren of an ambulance. This unexpected sound involuntarily captures your attention and interferes with ongoing performance. We tested whether this type of distraction involves a spatial shift of attention. We measured behavioral data and magnetoencephalographic alpha power during a cross‐modal...

article

Residual UNet with Dual Attention—An ensemble residual UNet with dual attention for multi‐modal and multi‐class brain MRI segmentation

K. H. Vijaya Kumari, Soubhagya Sankar Barpanda

International Journal of Imaging Systems and Technology > 33 > 2 > 644 - 658

In this paper, we have proposed a variant of UNet for brain magnetic resonance imaging (MRI) segmentation. The proposed model, termed as Residual UNet with Dual Attention (RUDA), addresses the two significant challenges of UNet: extraction of the complex features with unclear boundaries and the problem of over‐segmentation due to the redundancy caused by the skip connection usage. RUDA is constituted...

article

Spatial attention based on 2D location and relative depth order modulates visual working memory in a 3D environment

Wei Fang, Kaiyue Wang, Ke Zhang, Jiehui Qian

British Journal of Psychology > 114 > 1 > 112 - 131

The attentional effect on visual working memory (VWM) has been a heated research topic in the past two decades. Studies show that VWM performance for an attended memory item can be improved by cueing its two‐dimensional (2D) spatial location during retention. However, few studies have investigated the effect of attentional selection on VWM in a three‐dimensional setting, and it remains unknown whether...

article

Effects of selective attention on the C1 ERP component: A systematic review and meta‐analysis

Nan Qin, Stefan Wiens, Karsten Rauss, Gilles Pourtois

Psychophysiology > 59 > 12 > n/a - n/a

The C1 event‐related potential (ERP) captures the earliest stage of feedforward processing in the primary visual cortex (V1). An ongoing debate is whether top‐down selective attention can modulate the C1. One side of the debate pointed out that null findings appear to outnumber positive findings; thus, selective attention does not seem to influence the C1. However, this suggestion is not based on...

article

Effects of task load, spatial attention, and trait anxiety on neuronal responses to fearful and neutral faces

Sebastian Schindler, Theresa Sofie Richter, Maximilian Bruchmann, Niko A. Busch, more

Psychophysiology > 59 > 11 > n/a - n/a

There is an ongoing debate on how different components of the event‐related potential (ERP) to threat‐related facial expressions are modulated by attentional conditions and interindividual differences in trait anxiety. In the current study (N = 80), we examined ERPs to centrally presented, task‐irrelevant fearful and neutral faces, while participants had to solve a face‐unrelated visual task, which...

article

Simultaneous modeling of reaction times and brain dynamics in a spatial cueing task

Simon R. Steinkamp, Gereon R. Fink, Simone Vossel, Ralph Weidner

Human Brain Mapping > 43 > 6 > 1850 - 1867

Understanding how brain activity translates into behavior is a grand challenge in neuroscientific research. Simultaneous computational modeling of both measures offers to address this question. The extension of the dynamic causal modeling (DCM) framework for blood oxygenation level‐dependent (BOLD) responses to behavior (bDCM) constitutes such a modeling approach. However, only very few studies have...

article

Testing predictions of a neural process model of visual attention in infancy across competitive and non‐competitive contexts

John P. Spencer, Shannon Ross‐Sheehy, Bret Eschman

Infancy > 27 > 2 > 389 - 411

A key question in early development is how changes in neural systems give rise to changes in infants' behavior. We examine this question by testing predictions of a dynamic field (DF) model of infant spatial attention. We tested 5‐, 7‐, and 10‐month‐old infants in the Infant Orienting With Attention (IOWA) task containing the original non‐competitive cue conditions (when a central stimulus disappeared...

article

Emotional content overrides spatial attention

Valeria Bekhtereva, Matt Craddock, Matthias M. Müller

Psychophysiology > 58 > 8 > n/a - n/a

Spatial attention is our capacity to attend to or ignore particular regions of our spatial environment. However, some classes of stimuli may be able to override our efforts to ignore them. Here we assessed the relationship between involuntary attentional capture with emotional images and spatial attention at early stages of perceptual processing. Multiple scenes of unpleasant and neutral content were...

article

Alpha oscillations do not implement gain control in early visual cortex but rather gating in parieto‐occipital regions

Alexander Zhigalov, Ole Jensen

Human Brain Mapping > 41 > 18 > 5176 - 5186

Spatial attention provides a mechanism for, respectively, enhancing relevant and suppressing irrelevant information. While it is well established that attention modulates oscillations in the alpha band, it remains unclear if alpha oscillations are involved in directly modulating the neuronal excitability associated with the allocation of spatial attention. In this study, in humans, we utilized a novel...

article

Learning to run the number line: the development of attentional shifts during single‐digit arithmetic

Andrea Díaz‐Barriga Yáñez, Auriane Couderc, Léa Longo, Annabelle Merchie, more

Annals of the New York Academy of Sciences > 1477 > 1 > 79 - 90

Solving single‐digit subtraction and addition problems is associated with left and right shifts of attention in adults. Here, we explored the development of these spatial shifts in children from the third to fifth grade. In two experiments, children solved single‐digit addition (Experiments 1 and 2), subtraction (Experiment 1), and multiplication (Experiment 2) problems in which operands and the arithmetic...

article

Attentional reorientation along the meridians of the visual field: Are there different neural mechanisms at play?

Simon R. Steinkamp, Simone Vossel, Gereon R. Fink, Ralph Weidner

Human Brain Mapping > 41 > 13 > 3765 - 3780

Hemispatial neglect, after unilateral lesions to parietal brain areas, is characterized by an inability to respond to unexpected stimuli in contralesional space. As the visual field's horizontal meridian is most severely affected, the brain networks controlling visuospatial processes might be tuned explicitly to this axis. We investigated such a potential directional tuning in the dorsal and ventral...

article

Responding to sounds from unseen locations: crossmodal attentional orienting in response to sounds presented from the rear

Charles Spence, Jae Lee, Nathan Van der Stoep

European Journal of Neuroscience > 51 > 5 > 1137 - 1150

To date, most of the research on spatial attention has focused on probing people's responses to stimuli presented in frontal space. That is, few researchers have attempted to assess what happens in the space that is currently unseen (essentially rear space). In a sense, then, ‘out of sight’ is, very much, ‘out of mind’. In this review, we highlight what is presently known about the perception and...

article

Expectancy modulates pupil size both during endogenous orienting and during re‐orienting of spatial attention: A study with isoluminant stimuli

Stefano Lasaponara, Gianfranco Fortunato, Alessio Dragone, Michele Pellegrino, more

European Journal of Neuroscience > 50 > 5 > 2893 - 2904

We have recently demonstrated that when endogenous orienting of spatial attention is guided by central directional cues that reliably predict the position of lateral targets. Pupil Dilation (PDil) is higher as compared with directional cues that do not predict target position. These findings were interpreted as reflecting different levels of Locus Coeruleus‐Noradrenergic activity during endogenous...

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SPATIAL ATTENTION (532)
VISUAL SEARCH (25)
PSEUDONEGLECT (21)
ERP (20)
ERPS (18)
EVENT-RELATED POTENTIAL (16)
INHIBITION OF RETURN (16)
EEG (15)
SELECTIVE ATTENTION (15)
ORIENTING (14)
PARIETAL CORTEX (14)
FMRI (13)
VISION (13)
EYE MOVEMENTS (12)
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VISUAL ATTENTION (12)
DYSLEXIA (11)
EXOGENOUS ORIENTING (11)
FEATURE-BASED ATTENTION (11)
HUMAN (11)
LINE BISECTION (11)
MULTISENSORY (11)
N2PC (11)
NEGLECT (11)
SPATIAL NEGLECT (11)
WORKING MEMORY (11)
ATTENTION (10)
ATTENTIONAL CAPTURE (10)
VISUAL PERCEPTION (10)
CONSCIOUSNESS (9)
MENTAL NUMBER LINE (9)
N1 (9)
REACTION TIME (9)
SUSTAINED ATTENTION (9)
TRANSCRANIAL MAGNETIC STIMULATION (9)
EVENT-RELATED BRAIN POTENTIALS (8)
EVENT-RELATED POTENTIALS (8)
NUMERICAL COGNITION (8)
OBJECT-BASED ATTENTION (8)
ALERTNESS (7)
AUDITORY (7)
EMOTION (7)
EXOGENOUS (7)
MULTISENSORY INTEGRATION (7)
OBJECT ATTENTION (7)
PERCEPTION (7)
TACTILE (7)
TOUCH (7)
AUTOMATICITY (6)
CHILDREN (6)
ELECTROENCEPHALOGRAPHY (6)
ENDOGENOUS (6)
EXTINCTION (6)
HEMISPHERIC ASYMMETRY (6)
MOTOR PREPARATION (6)
OBJECT RECOGNITION (6)
POSTERIOR PARIETAL CORTEX (6)
SIMON EFFECT (6)
SOMATOSENSORY (6)
ALPHA OSCILLATIONS (5)
ATTENTIONAL BLINK (5)
AUTISM (5)
AWARENESS (5)
CROSSMODAL (5)
ENDOGENOUS ATTENTION (5)
EXOGENOUS ATTENTION (5)
FACE PERCEPTION (5)
FRONTOPARIETAL NETWORK (5)
FUNCTIONAL MAGNETIC RESONANCE IMAGING (5)
INTERFACE DESIGN (5)
IOR (5)
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CUEING (4)
DOPAMINE (4)
HEARING (4)
INHIBITION (4)
LOAD (4)
NEUROPHYSIOLOGY (4)
NONSPATIAL ATTENTION (4)
RESPONSE PREPARATION (4)
SCHIZOPHRENIA (4)
SPATIAL CUEING (4)
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Search results

Dissociable effects of anodal and cathodal tDCS reveal distinct functional roles for right parietal cortex in the detection of single and competing stimuli

Smartphone App to Detect Pathological Myopia Using Spatial Attention and Squeeze‐Excitation Network as a Classifier and Segmentation Encoder

Attention modulates early visual processing: An association between subjective contrast perception and early C1 ERP component

Dynamic alpha power modulations and slow negative potentials track natural shifts of spatio‐temporal attention

Children with dyslexia show no deficit in exogenous spatial attention but show differences in visual encoding

Eye movements reveal that young school children shift attention when solving additions and subtractions

Distinct patterns of spatial attentional modulation of steady‐state visual evoked magnetic fields (SSVEFs) in subdivisions of the human early visual cortex

Involuntary shifts of spatial attention contribute to distraction—Evidence from oscillatory alpha power and reaction time data

Residual UNet with Dual Attention—An ensemble residual UNet with dual attention for multi‐modal and multi‐class brain MRI segmentation

Spatial attention based on 2D location and relative depth order modulates visual working memory in a 3D environment

Effects of selective attention on the C1 ERP component: A systematic review and meta‐analysis

Effects of task load, spatial attention, and trait anxiety on neuronal responses to fearful and neutral faces

Simultaneous modeling of reaction times and brain dynamics in a spatial cueing task

Testing predictions of a neural process model of visual attention in infancy across competitive and non‐competitive contexts

Emotional content overrides spatial attention

Alpha oscillations do not implement gain control in early visual cortex but rather gating in parieto‐occipital regions

Learning to run the number line: the development of attentional shifts during single‐digit arithmetic

Attentional reorientation along the meridians of the visual field: Are there different neural mechanisms at play?

Responding to sounds from unseen locations: crossmodal attentional orienting in response to sounds presented from the rear

Expectancy modulates pupil size both during endogenous orienting and during re‐orienting of spatial attention: A study with isoluminant stimuli

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