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Brain Computation as Hierarchical Abstraction
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kr 148
Brain Computation as Hierarchical Abstraction
An argument that the complexities of brain function can be understood hierarchically, in terms of different levels of abstraction, as silicon computing is.

The vast differences between the brain''s neural circuitry and a computer''s silicon circuitry might suggest that they have nothing in common. In fact, as Dana Ballard argues in this book, computational tools are essential for understanding brain function. Ballard shows that the hierarchical organization of the brain has many parallels with the hierarchical organization of computing; as in silicon computing, the complexities of brain computation can be dramatically simplified when its computation is factored into different levels of abstraction.

Drawing on several decades of progress in computational neuroscience, together with recent results in Bayesian and reinforcement learning methodologies, Ballard factors the brain''s principal computational issues in terms of their natural place in an overall hierarchy. Each of these factors leads to a fresh perspective. A neural level focuses on the basic forebrain functions and shows how processing demands dictate the extensive use of timing-based circuitry and an overall organization of tabular memories. An embodiment level organization works in reverse, making extensive use of multiplexing and on-demand processing to achieve fast parallel computation. An awareness level focuses on the brain''s representations of emotion, attention and consciousness, showing that they can operate with great economy in the context of the neural and embodiment substrates.

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An argument that the complexities of brain function can be understood hierarchically, in terms of different levels of abstraction, as silicon computing is.

The vast differences between the brain''s neural circuitry and a computer''s silicon circuitry might suggest that they have nothing in common. In fact, as Dana Ballard argues in this book, computational tools are essential for understanding brain function. Ballard shows that the hierarchical organization of the brain has many parallels with the hierarchical organization of computing; as in silicon computing, the complexities of brain computation can be dramatically simplified when its computation is factored into different levels of abstraction.

Drawing on several decades of progress in computational neuroscience, together with recent results in Bayesian and reinforcement learning methodologies, Ballard factors the brain''s principal computational issues in terms of their natural place in an overall hierarchy. Each of these factors leads to a fresh perspective. A neural level focuses on the basic forebrain functions and shows how processing demands dictate the extensive use of timing-based circuitry and an overall organization of tabular memories. An embodiment level organization works in reverse, making extensive use of multiplexing and on-demand processing to achieve fast parallel computation. An awareness level focuses on the brain''s representations of emotion, attention and consciousness, showing that they can operate with great economy in the context of the neural and embodiment substrates.

Produktdetaljer
Sprog: Engelsk
Sider: 456
ISBN-13: 9780262534123
Indbinding: Paperback
Udgave:
ISBN-10: 0262534126
Kategori: Neurovidenskab
Udg. Dato: 20 feb 2015
Længde: 25mm
Bredde: 156mm
Højde: 228mm
Oplagsdato: 20 feb 2015
Forfatter(e) Dana H. (Professor Ballard, Dana H. Ballard


Kategori Neurovidenskab


Sprog Engelsk


Indbinding Paperback


Sider 456


Udgave


Længde 25mm


Bredde 156mm


Højde 228mm

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