Effects Of Attention On Visual Motion Processing
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Effects Of Attention On Visual Motion Processing
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Author : Amira Amina Rezec
language : en
Publisher:
Release Date : 2004
Effects Of Attention On Visual Motion Processing written by Amira Amina Rezec and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Attention categories.
The Influence Of Attention On Motion Processing
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Author : Valeska Marija Stephan
language : en
Publisher:
Release Date : 2012
The Influence Of Attention On Motion Processing written by Valeska Marija Stephan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
This thesis examined the influences of attention on the processing of complex and simple motion stimuli. The work consists of two physiology studies. In the first study we investigated the question of how complex motion stimuli, namely transparent motion stimuli, are processed in area MT and the influence of attention on the processing. In our second study we were interested in attentional effects on visual motion stimuli in the primary visual cortex. We find a strong feature-based component which contributes to the processing of complex motion stimuli. Furthermore we show that effects of s ...
Effects Of Selective Attention On Sensory Processing Of Visual Motion
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Author : Laura Busse
language : en
Publisher:
Release Date : 2006
Effects Of Selective Attention On Sensory Processing Of Visual Motion written by Laura Busse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The Effects Of Feature Based Attention On Perception
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Author : Xiaohua Zhuang
language : en
Publisher:
Release Date : 2010
The Effects Of Feature Based Attention On Perception written by Xiaohua Zhuang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Attention categories.
Feature-based attention is one of the mechanisms that can facilitate the processing of many aspects of our visual perception. A variety of paradigms were employed in the current dissertation to further investigate how feature-based attention modulates motion perception, visual search and temporal processing of stimuli. The first set of experiments aimed to explore the effects of feature-based attention on the processing of motion speed and motion direction separately. Speed and direction discrimination tasks were used in separate experiments. Results showed that feature-based attention has more dramatic influence on direction perception than on speed perception. This may be taken as evidence that humans are more sensitive to motion speed change than to motion direction change. The second set of experiments was designed to study how performance in color-orientation conjunctive searches changes when observers attend to a pre-cued location, or a pre-cued feature (color or orientation), as well as the temporal characteristics of these precue effects. Color (sensory and symbolic) and location precues improved search performance. The magnitude of improvement did not vary as the inter-stimulus interval (ISI) changed for color and location cues. The sensory color and location cues exhibited their effect in directing visual search as early as 0 ms of ISI. However, orientation precue did not facilitate nor inhibit the search processing. These results may imply that color is a better feature to base the segmentation processing on and thereby facilitate the visual search processing. The third set of experiments explored the existence of feature-based attentional prior-entry effect, which refers to the hypothesis that attended objects are perceived prior to unattended ones. Temporal order judgment (TOJ) and simultaneity judgment (SJ) tasks were employed to test this hypothesis. Prior-entry effect for objects with attended feature was found in TOJ task, the most frequently used paradigm in the literature to claim the spatial prior-entry effect, but the effect was absent in the SJ task. This could be due to a second-order response bias in the TOJ task, or to the fact that the SJ task is not as sensitive as the TOJ task.
Global Effects Of Attention In Human Visual Cortex
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Author : Melissa Saenz
language : en
Publisher:
Release Date : 2002
Global Effects Of Attention In Human Visual Cortex written by Melissa Saenz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Visual Motion Processing In The Human Cortex
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Author : Alexander Christopher Huk
language : en
Publisher:
Release Date : 2001
Visual Motion Processing In The Human Cortex written by Alexander Christopher Huk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Visual Motion Perception Visual Attention And Visual Information Processing
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Author :
language : en
Publisher:
Release Date : 2001
Visual Motion Perception Visual Attention And Visual Information Processing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Continuing work on the three-systems-theory of visual motion perception: (I) Isoluminant chromatic motion is perceived by and only by the third-order motion system. (2) New illusion. Cancelling salience modulation in the third-order motion system causes brightly colored moving red-green gratings to appear to be motionless (motion standstill illusion) that gives considerable insight into the mechanisms of object perception. (3) A prediction that motion could be used to provide amplification of apparent contrast was verified, with amplifications>5x. (4) Amplification procedures were used to construct purified stimuli to stimulate each motion system individually, and (5) to measure the amplification produced by selective attention to a feature. (6) Developed computational models oi attentional amplification of features and of the movement dynamics of spatial attention. The spatial attentional mode was investigated with a new paradigm (gating spatial attention) to enable measurements of iconic memory uncontaminated by attention dynamics and to demonstrate that a new attention "window' open concurrently at all points within the window. (7) The spatial attention model predicts 90% of the variance in a huge data set (approximately 500 points per observer from>20,000 trials) and encompasses the major attention paradigms. (All items plus more are fully described in publications.).
Fmri Of Attention In The Human Visual Motion Processing System
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Author : Michael S. Beauchamp
language : en
Publisher:
Release Date : 1997
Fmri Of Attention In The Human Visual Motion Processing System written by Michael S. Beauchamp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Attention
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Author : Harold Pashler
language : en
Publisher: Psychology Press
Release Date : 2016-01-28
Attention written by Harold Pashler and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-28 with Psychology categories.
This collection of essays, intended as a text for students, examines the different facets of research into attention. The book is divided into two sections: one deals with psychological research into such areas as visual search, dual-task interference and attentional bottleneck; the other deals with approaches to neural-network modelling and the effects of brain damage on attention.
Neurobiology Of Attention
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Author : Laurent Itti
language : en
Publisher: Elsevier
Release Date : 2005-03-31
Neurobiology Of Attention written by Laurent Itti and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-03-31 with Psychology categories.
A key property of neural processing in higher mammals is the ability to focus resources by selectively directing attention to relevant perceptions, thoughts or actions. Research into attention has grown rapidly over the past two decades, as new techniques have become available to study higher brain function in humans, non-human primates, and other mammals. Neurobiology of Attention is the first encyclopedic volume to summarize the latest developments in attention research.An authoritative collection of over 100 chapters organized into thematic sections provides both broad coverage and access to focused, up-to-date research findings. This book presents a state-of-the-art multidisciplinary perspective on psychological, physiological and computational approaches to understanding the neurobiology of attention. Ideal for students, as a reference handbook or for rapid browsing, the book has a wide appeal to anybody interested in attention research. * Contains numerous quick-reference articles covering the breadth of investigation into the subject of attention* Provides extensive introductory commentary to orient and guide the reader* Includes the most recent research results in this field of study