Author: Jonathan Lee Baker
Publisher:
ISBN:
Category : Visual cortex
Languages : en
Pages : 364
Book Description
The mammalian visual system evolved to process and represent objects within the complexities of the natural world to appropriately guide behavior in order to ensure survival and reproduction. Visual neuroscience has long sought to understand the neural basis of these processes, but the complexity of both the visual world and the brain has traditionally required a highly reductionist approach. The classical approach has led to the development of models of visual perception that are largely based on the analysis of how single cells within the visual system respond to simple and parametrically defined visual stimuli. However our ultimate goal is to understand how the visual system operates in the natural world. The experiments and results contained in this thesis were conducted, in part, to explore the cat's visual system during the presentation of time varying natural scenes, i.e. movies, and to attempt to validate our current working models of the visual system. Novel large-scale recording methods were employed to record from and characterize responses of large populations of cat primary visual cortex neurons during classical as well as movie stimulation. Contrary to the current models and our general understanding of how visual cortex represents information, groups of adjacent neurons responded heterogeneously to the movies presented and individual responses were very brief and highly sparse in time. The diversity and dynamics of the spiking activity was also significantly correlated with fluctuations of the ongoing local field potentials, specifically within the gamma frequency band, ranging from 25 to 90Hz. These gamma band oscillations also exhibited rich spatiotemporal dynamics throughout the movie presentations. In conclusion, time-varying natural scenes evoke response dynamics within the cat primary visual cortex not typically observed under more classical stimulus regimes. Future experimentation and the construction of biologically feasible models of visual cortex should take into account the diversity of responses observed under more natural stimulus conditions.
Exploration of Cat Striate Cortex During Natural Scene Stimulation
Author: Jonathan Lee Baker
Publisher:
ISBN:
Category : Visual cortex
Languages : en
Pages : 364
Book Description
The mammalian visual system evolved to process and represent objects within the complexities of the natural world to appropriately guide behavior in order to ensure survival and reproduction. Visual neuroscience has long sought to understand the neural basis of these processes, but the complexity of both the visual world and the brain has traditionally required a highly reductionist approach. The classical approach has led to the development of models of visual perception that are largely based on the analysis of how single cells within the visual system respond to simple and parametrically defined visual stimuli. However our ultimate goal is to understand how the visual system operates in the natural world. The experiments and results contained in this thesis were conducted, in part, to explore the cat's visual system during the presentation of time varying natural scenes, i.e. movies, and to attempt to validate our current working models of the visual system. Novel large-scale recording methods were employed to record from and characterize responses of large populations of cat primary visual cortex neurons during classical as well as movie stimulation. Contrary to the current models and our general understanding of how visual cortex represents information, groups of adjacent neurons responded heterogeneously to the movies presented and individual responses were very brief and highly sparse in time. The diversity and dynamics of the spiking activity was also significantly correlated with fluctuations of the ongoing local field potentials, specifically within the gamma frequency band, ranging from 25 to 90Hz. These gamma band oscillations also exhibited rich spatiotemporal dynamics throughout the movie presentations. In conclusion, time-varying natural scenes evoke response dynamics within the cat primary visual cortex not typically observed under more classical stimulus regimes. Future experimentation and the construction of biologically feasible models of visual cortex should take into account the diversity of responses observed under more natural stimulus conditions.
Publisher:
ISBN:
Category : Visual cortex
Languages : en
Pages : 364
Book Description
The mammalian visual system evolved to process and represent objects within the complexities of the natural world to appropriately guide behavior in order to ensure survival and reproduction. Visual neuroscience has long sought to understand the neural basis of these processes, but the complexity of both the visual world and the brain has traditionally required a highly reductionist approach. The classical approach has led to the development of models of visual perception that are largely based on the analysis of how single cells within the visual system respond to simple and parametrically defined visual stimuli. However our ultimate goal is to understand how the visual system operates in the natural world. The experiments and results contained in this thesis were conducted, in part, to explore the cat's visual system during the presentation of time varying natural scenes, i.e. movies, and to attempt to validate our current working models of the visual system. Novel large-scale recording methods were employed to record from and characterize responses of large populations of cat primary visual cortex neurons during classical as well as movie stimulation. Contrary to the current models and our general understanding of how visual cortex represents information, groups of adjacent neurons responded heterogeneously to the movies presented and individual responses were very brief and highly sparse in time. The diversity and dynamics of the spiking activity was also significantly correlated with fluctuations of the ongoing local field potentials, specifically within the gamma frequency band, ranging from 25 to 90Hz. These gamma band oscillations also exhibited rich spatiotemporal dynamics throughout the movie presentations. In conclusion, time-varying natural scenes evoke response dynamics within the cat primary visual cortex not typically observed under more classical stimulus regimes. Future experimentation and the construction of biologically feasible models of visual cortex should take into account the diversity of responses observed under more natural stimulus conditions.
Stimulus Dependent Reorganization of Orientation in Cat Striate Cortex
Author: Alicia Maria Thomas
Publisher:
ISBN:
Category : Cats
Languages : en
Pages : 140
Book Description
Publisher:
ISBN:
Category : Cats
Languages : en
Pages : 140
Book Description
Exploration of Cortical Function
Author: M. Stetter
Publisher: Springer Science & Business Media
ISBN: 9401004307
Category : Medical
Languages : en
Pages : 278
Book Description
Exploration of Cortical Function summarizes recent research efforts aiming at the revelation of cortical population coding and signal processing strategies. Topics include optical detection techniques of population activity in the sub-millimeter range, advanced methods for the statistical analysis of these data, and biologically inspired neuronal modeling techniques for population activities in the frameworks of optimal coding, statistical learning theory, and mean-field recurrent networks. Exploration of Cortical Function is unique in that it covers one complete branch of population-based brain research ranging from techniques for data acquisition over data analysis up to modeling techniques for the quantification of functional principles. The volume covers an area which is of great current interest to researchers working on cerebral cortex. The combination of models and image analysis techniques to examine the activity of large cohorts of neurons is especially intriguing and prone to considerable error and debate.
Publisher: Springer Science & Business Media
ISBN: 9401004307
Category : Medical
Languages : en
Pages : 278
Book Description
Exploration of Cortical Function summarizes recent research efforts aiming at the revelation of cortical population coding and signal processing strategies. Topics include optical detection techniques of population activity in the sub-millimeter range, advanced methods for the statistical analysis of these data, and biologically inspired neuronal modeling techniques for population activities in the frameworks of optimal coding, statistical learning theory, and mean-field recurrent networks. Exploration of Cortical Function is unique in that it covers one complete branch of population-based brain research ranging from techniques for data acquisition over data analysis up to modeling techniques for the quantification of functional principles. The volume covers an area which is of great current interest to researchers working on cerebral cortex. The combination of models and image analysis techniques to examine the activity of large cohorts of neurons is especially intriguing and prone to considerable error and debate.
Principles of Frontal Lobe Function
Author: Donald T. Stuss
Publisher: Oxford University Press
ISBN: 0198030835
Category : Medical
Languages : en
Pages : 642
Book Description
This volume provides a comprehensive review of historical and current research on the function of the frontal lobes and frontal systems of the brain. The content spans frontal lobe functions from birth to old age, from biochemistry and anatomy to rehabilitation, and from normal to disrupted function. The book is intended to be a standard reference work on the frontal lobes for researchers, clinicians, and students in the field of neurology, neuroscience, psychiatry, psychology, and health care.
Publisher: Oxford University Press
ISBN: 0198030835
Category : Medical
Languages : en
Pages : 642
Book Description
This volume provides a comprehensive review of historical and current research on the function of the frontal lobes and frontal systems of the brain. The content spans frontal lobe functions from birth to old age, from biochemistry and anatomy to rehabilitation, and from normal to disrupted function. The book is intended to be a standard reference work on the frontal lobes for researchers, clinicians, and students in the field of neurology, neuroscience, psychiatry, psychology, and health care.
Functional Information Processing in the Visual Cortex of the Cat
Author: Anthony Merrill Truchard
Publisher:
ISBN:
Category :
Languages : en
Pages : 596
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 596
Book Description
Directional and Orientational Tuning in the Striate Cortex of the Cat for Contrast and Textured Stimuli
Author: D. A. Tigwell
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Cat Primary Visual Cortex
Author: Bertram R. Payne
Publisher:
ISBN: 9780125521048
Category : Medical
Languages : en
Pages : 713
Book Description
Written by experts on the forefront of investigations of brain function, vision, and perception, the material presented is of an unparalleled scientific quality, and shows that analyses of enormous breadth and sophistication are required to probe the structure and function of brain regions. The articles are highly persuasive in showing what can be achieved by carrying out careful and imaginative experiments. The Cat Primary Visual Cortex should emerge as essential reading for all those interested in cerebral cortical processing of visual signals or researching or working in any field of vision. Key Features * Comprehensive account of cat primary visual cortex * Generous use of illustrations including color * Covers research from structure to connections to functions * Chapters by leaders in the field * Topics presneted on multiple, compatible levels
Publisher:
ISBN: 9780125521048
Category : Medical
Languages : en
Pages : 713
Book Description
Written by experts on the forefront of investigations of brain function, vision, and perception, the material presented is of an unparalleled scientific quality, and shows that analyses of enormous breadth and sophistication are required to probe the structure and function of brain regions. The articles are highly persuasive in showing what can be achieved by carrying out careful and imaginative experiments. The Cat Primary Visual Cortex should emerge as essential reading for all those interested in cerebral cortical processing of visual signals or researching or working in any field of vision. Key Features * Comprehensive account of cat primary visual cortex * Generous use of illustrations including color * Covers research from structure to connections to functions * Chapters by leaders in the field * Topics presneted on multiple, compatible levels
Central/peripheral Receptive Field Characteristics of Neurons in Normal and Monocularly-deprived Cat Striate Cortex
Author: James Roland Wilson
Publisher:
ISBN:
Category : Cats as laboratory animals
Languages : en
Pages : 244
Book Description
Publisher:
ISBN:
Category : Cats as laboratory animals
Languages : en
Pages : 244
Book Description
An Investigation of Local Interactions in Cat Striate Cortex Using Contrast Gain Control
Author: Benjamin Ryan Roig
Publisher:
ISBN:
Category : Cats
Languages : en
Pages : 128
Book Description
Publisher:
ISBN:
Category : Cats
Languages : en
Pages : 128
Book Description
Some Afferent and Efferent Connections of the Cat Striate Cortex
Author: Jyothi Boyapati
Publisher:
ISBN:
Category : Cats
Languages : en
Pages : 368
Book Description
Publisher:
ISBN:
Category : Cats
Languages : en
Pages : 368
Book Description