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Electrophysiological correlates of rapid spatial orienting towards fearful faces

by Gilles Pourtois, Didier Gr, David S, Patrik Vuilleumier - Cereb. Cortex , 2004
"... We investigated the spatio-temporal dynamic of attentional bias towards fearful faces. Twelve participants performed a covert spatial orienting task while recording visual event-related brain potentials (VEPs). Each trial consisted of a pair of faces (one emotional and one neutral) briefly presented ..."
Abstract - Cited by 106 (6 self) - Add to MetaCart
We investigated the spatio-temporal dynamic of attentional bias towards fearful faces. Twelve participants performed a covert spatial orienting task while recording visual event-related brain potentials (VEPs). Each trial consisted of a pair of faces (one emotional and one neutral) briefly

Beyond fear: Rapid spatial orienting toward positive emotional stimuli

by Tobias Brosch, Tobias Brosch, David S, Gilles Pourtois, Klaus R. Scherer - Psychological Science , 2008
"... On behalf of: ..."
Abstract - Cited by 30 (3 self) - Add to MetaCart
On behalf of:

The role of visual attention in saccadic eye movements

by James E. Hoffman, Baskaran Subramaniam - Perception & Psychophysics , 1995
"... The relationship between saccadic eye movements and covert orienting of visual spatial attention was investigated in two experiments. In the first experiment, subjects were required to make a saccade to a specified location while also detecting a visual target presented just prior to the eye movemen ..."
Abstract - Cited by 230 (1 self) - Add to MetaCart
The relationship between saccadic eye movements and covert orienting of visual spatial attention was investigated in two experiments. In the first experiment, subjects were required to make a saccade to a specified location while also detecting a visual target presented just prior to the eye

Recovering surface layout from an image

by Derek Hoiem, Alexei A. Efros, Martial Hebert - In IJCV , 2007
"... Humans have an amazing ability to instantly grasp the overall 3D structure of a scene – ground orientation, relative positions of major landmarks, etc – even from a single image. This ability is completely missing in most popular recognition algorithms, which pretend that the world is flat and/or vi ..."
Abstract - Cited by 205 (25 self) - Add to MetaCart
layout, a labeling of the image into geometric classes. Our main insight is to learn appearance-based models of these geometric classes, which coarsely describe the 3D scene orientation of each image region. Our multiple segmentation framework provides robust spatial support, allowing a wide variety

Microtubule polymerization dynamics,”

by Arshad Desai , Timothy J Mitchison - Annu. Rev. Cell Dev. Biol. , 1997
"... ABSTRACT The polymerization dynamics of microtubules are central to their biological functions. Polymerization dynamics allow microtubules to adopt spatial arrangements that can change rapidly in response to cellular needs and, in some cases, to perform mechanical work. Microtubules utilize the ene ..."
Abstract - Cited by 193 (2 self) - Add to MetaCart
ABSTRACT The polymerization dynamics of microtubules are central to their biological functions. Polymerization dynamics allow microtubules to adopt spatial arrangements that can change rapidly in response to cellular needs and, in some cases, to perform mechanical work. Microtubules utilize

Optimality in human motor performance: ideal control of rapid aimed movements

by David E. Meyer, Richard A. Abrams, Sylvan Kornblum, Charles E. Wright, J. E. Keith Smith - Psychological Review , 1988
"... A stochastic optimized-submovement model is proposed for Pitts ' law, the classic logarithmic tradeoff between the duration and spatial precision of rapid aimed movements. According to the model, an aimed movement toward a specified target region involves a primary submovement and an optional s ..."
Abstract - Cited by 158 (4 self) - Add to MetaCart
A stochastic optimized-submovement model is proposed for Pitts ' law, the classic logarithmic tradeoff between the duration and spatial precision of rapid aimed movements. According to the model, an aimed movement toward a specified target region involves a primary submovement and an optional

A Comparison of Feature Combination Strategies for Saliency-Based Visual Attention Systems

by Laurent Itti, Christof Koch - Journal of Electronic Imaging , 1999
"... Bottom-up or saliency-based visual attention allows primates to detect non-specific conspicuous targets in cluttered scenes. A classical metaphor, derived from electrophysiological and psychophysical studies, describes attention as a rapidly shiftable "spotlight". The model described here ..."
Abstract - Cited by 196 (23 self) - Add to MetaCart
reproduces the attentional scanpaths of this spotlight: Simple multi-scale "feature maps" detect local spatial discontinuities in intensity, color, orientation or optical flow, and are combined into a unique "master" or "saliency" map. The saliency map is sequentially scanned

Human gaze control during real-world scene perception

by John M. Henderson - Trends in Cognitive Sciences , 2003
"... In human vision, acuity and color sensitivity are best at the point of fixation, and the visual-cognitive system exploits this fact by actively controlling gaze to direct fixation towards important and informative scene regions in real time as needed. How gaze control oper-ates over complex real-wor ..."
Abstract - Cited by 183 (4 self) - Add to MetaCart
perception, high quality visual information is acquired only from a limited spatial region surrounding the center of gaze (the fovea). Visual quality falls off rapidly and continuously from the center of gaze

Gaze perception triggers reflexive visuospatial orienting

by Jon Driver, Greg Davis, Paola Ricciardelli, Polly Kidd, Emma Maxwell, Simon Baron-cohen - Visual Cognition , 1999
"... This paper seeks to bring together two previously separate research traditions: research on spatial orienting within the visual cueing paradigm and research into social cognition, addressing our tendency to attend in the direction that another person looks. Cueing methodologies from mainstream atten ..."
Abstract - Cited by 132 (2 self) - Add to MetaCart
This paper seeks to bring together two previously separate research traditions: research on spatial orienting within the visual cueing paradigm and research into social cognition, addressing our tendency to attend in the direction that another person looks. Cueing methodologies from mainstream

Fast Discrete Curvelet Transforms

by Emmanuel Candès, Laurent Demanet, David Donoho, Lexing Ying , 2005
"... This paper describes two digital implementations of a new mathematical transform, namely, the second generation curvelet transform [12, 10] in two and three dimensions. The first digital transformation is based on unequally-spaced fast Fourier transforms (USFFT) while the second is based on the wrap ..."
Abstract - Cited by 175 (9 self) - Add to MetaCart
on the wrapping of specially selected Fourier samples. The two implementations essentially differ by the choice of spatial grid used to translate curvelets at each scale and angle. Both digital transformations return a table of digital curvelet coefficients indexed by a scale parameter, an orientation parameter
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