Dynamics of Visual Motion Processing

Dynamics of Visual Motion Processing PDF

Author: Guillaume S. Masson

Publisher: Springer Science & Business Media

Published: 2009-12-02

Total Pages: 362

ISBN-13: 1441907815

DOWNLOAD EBOOK →

Motion processing is an essential piece of the complex brain machinery that allows us to reconstruct the 3D layout of objects in the environment, to break camouflage, to perform scene segmentation, to estimate the ego movement, and to control our action. Although motion perception and its neural basis have been a topic of intensive research and modeling the last two decades, recent experimental evidences have stressed the dynamical aspects of motion integration and segmentation. This book presents the most recent approaches that have changed our view of biological motion processing. These new experimental evidences call for new models emphasizing the collective dynamics of large population of neurons rather than the properties of separate individual filters. Chapters will stress how the dynamics of motion processing can be used as a general approach to understand the brain dynamics itself.

Visual motion and self-motion processing in the human brain, MPI Series in Biological Cybernetics, Bd. 31

Visual motion and self-motion processing in the human brain, MPI Series in Biological Cybernetics, Bd. 31 PDF

Author: Elvira Fischer

Publisher: Logos Verlag Berlin GmbH

Published: 2011

Total Pages: 127

ISBN-13: 3832529942

DOWNLOAD EBOOK →

For the successful recognition of objective, `real' motion based on visual cues it is necessary to take self-induced motion signals into account, such as those induced by eye-movements. During a series of fMRI studies we measured responses of visual and parietal regions to motion cues derived from (a) retinal motion, (b) eyemovements (visual pursuit) and (c) objective, (real) motion. We show that the recently described cingulate sulcus visual area (CSv) is not, as implied before, primarily driven by 3D self-motion cues but favoured 2D translational coherent motion over 3D expanding flow fields. Further, we found that V3A is capable of integrating retinal motion with eye-movements, thus allowing V3A to respond to object motion independent of retinal motion. This allowed us to define a new functional localizer for area V3A. Finally, we showed that activity in the foveal representation of the early visual cortex is driven by a combination of retinal input and by error signals as hypothesized by of Rao and Ballard (1999) for predictive coding. Taken together, this work provides evidence that regions V3A and CSv are key regions concerning visual self-motion processing and that early visual regions might be modulated by feedback from higher motion processing regions.

High-level Motion Processing

High-level Motion Processing PDF

Author: Takeo Watanabe

Publisher: MIT Press

Published: 1998

Total Pages: 438

ISBN-13: 9780262231954

DOWNLOAD EBOOK →

The contributors to this book focus on such key aspects of motion processing as interaction and integration between locally measured motion units, structure from motion, heading in an optical flow, and second-order motion. They also discuss the interaction of motion processing with other high-level visual functions such as surface representation and attention.

Visual Detection of Motion

Visual Detection of Motion PDF

Author: Andrew T. Smith

Publisher:

Published: 1994

Total Pages: 504

ISBN-13:

DOWNLOAD EBOOK →

The brain's ability to detect movement within the retinal image is crucial not only for determining the trajectories of moving objects, but also for identifying and interpreting image motion resulting from eye and head movements. This book summarizes our knowledge of how information about image motion is encoded in the brain. Key Features * Valuable reference source for those involved in the rapidly expanding area of motion perception * Strong emphasis on integration of physiological, computation, and psychophysical approaches * Topics include: * Principles of local motion detection * Inputs to local motion detectors * Integration of motion signals * Higher-order interpretation of motion * Motion detection and eye movements

The Speed of Thought

The Speed of Thought PDF

Author: Martin J. Tovee

Publisher: Springer Science & Business Media

Published: 2013-06-29

Total Pages: 159

ISBN-13: 3662104083

DOWNLOAD EBOOK →

This book deals with information processing in the primate temporal visual cortex, one of the higher visual association areas, which is believed to be important for the representation of complex stimuli and may also play a role in visual memory. Here, the need for rapid information processing shapes the functional architecture of all sensory systems, acting to reduce, where possible, wiring length and the number of synapses, to allow faster processing.

Visual Perception Part 1

Visual Perception Part 1 PDF

Author: Susana Martinez-Conde

Publisher: Elsevier

Published: 2006-10-05

Total Pages: 340

ISBN-13: 9780080466088

DOWNLOAD EBOOK →

This book presents a collection of articles reflecting state-of-the-art research in visual perception, specifically concentrating on neural correlates of perception. Each section addresses one of the main topics in vision research today. Volume 1 Fundamentals of Vision: Low and Mid-Level Processes in Perception covers topics from receptive field analyses to shape perception and eye movements. A variety of methodological approaches are represented, including single-neuron recordings, fMRI and optical imaging, psychophysics, eye movement characterization and computational modelling. The contributions will provide the reader with a valuable perspective on the current status of vision research, and more importantly, with critical insight into future research directions and the discoveries yet to come. · Provides a detailed breakdown of the neural and psychophysical bases of Perception · Presents never-before-published original discoveries · Includes multiple full-color illustrations

Higher-Order Processing in the Visual System

Higher-Order Processing in the Visual System PDF

Author: Gregory R. Bock

Publisher: John Wiley & Sons

Published: 2008-04-30

Total Pages: 256

ISBN-13: 0470514620

DOWNLOAD EBOOK →

Foremost neurophysiologists and psychophysicists provide pertinent information on the nature of representation at the earliest stages as this will constrain the disposition of all subsequent processing. This processing is discussed in several different types of visual perception.

Neuronal Processing of Optic Flow

Neuronal Processing of Optic Flow PDF

Author:

Publisher: Academic Press

Published: 1999-12-06

Total Pages: 343

ISBN-13: 0080857787

DOWNLOAD EBOOK →

When we walk, drive a car, or fly an airplane, visual motion is used to control and guide our movement. Optic flow describes the characteristic pattern of visual motion that arises in these situations. This book is the first to take an in-depth look at the neuronal processing strategies that underlie the brain's ability to analyze and use optic flow for the control of self-motion. It does so in a variety of species which use optic flow in different behavioral contexts. The spectrum ranges from flying insects to birds, higher mammals and man. The contributions cover physiological and behavioral studies as well as computational models. Neuronal Processing of Optic Flow provides an authoritative and comprehensive overview of the current state of research on this topic written by a group of authors who have made essential contributions to shaping this field of research over the last ten years. Provides the first detailed overview of the analysis of complex visual motion patterns in the brain Includes physiological, behavioral, and computational aspects of optic flow processing Highlights similarities and differences between different animal species and behavioral tasks Covers human patients with visual motion deficits Enhances the reader's understanding with many illustrations

Lanterna Rally - Theme by Grace Themes