A Theory of How the Brain Might Work
I wish to propose a quite speculative new version of the grandmother cell theory to explain how the brain, or parts of it, may work. In particular, I discuss how the visual system may learn to recognize 3D objects. The model would apply directly to the cortical cells involved in visual face recognit...
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| Language: | en_US |
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2004
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| Online Access: | http://hdl.handle.net/1721.1/6559 |
| _version_ | 1826218045767417856 |
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| author | Poggio, Tomaso |
| author_facet | Poggio, Tomaso |
| author_sort | Poggio, Tomaso |
| collection | MIT |
| description | I wish to propose a quite speculative new version of the grandmother cell theory to explain how the brain, or parts of it, may work. In particular, I discuss how the visual system may learn to recognize 3D objects. The model would apply directly to the cortical cells involved in visual face recognition. I will also outline the relation of our theory to existing models of the cerebellum and of motor control. Specific biophysical mechanisms can be readily suggested as part of a basic type of neural circuitry that can learn to approximate multidimensional input-output mappings from sets of examples and that is expected to be replicated in different regions of the brain and across modalities. The main points of the theory are: -the brain uses modules for multivariate function approximation as basic components of several of its information processing subsystems. -these modules are realized as HyperBF networks (Poggio and Girosi, 1990a,b). -HyperBF networks can be implemented in terms of biologically plausible mechanisms and circuitry. The theory predicts a specific type of population coding that represents an extension of schemes such as look-up tables. I will conclude with some speculations about the trade-off between memory and computation and the evolution of intelligence. |
| first_indexed | 2024-09-23T17:13:17Z |
| id | mit-1721.1/6559 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:13:17Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | mit-1721.1/65592019-04-12T08:31:27Z A Theory of How the Brain Might Work Poggio, Tomaso I wish to propose a quite speculative new version of the grandmother cell theory to explain how the brain, or parts of it, may work. In particular, I discuss how the visual system may learn to recognize 3D objects. The model would apply directly to the cortical cells involved in visual face recognition. I will also outline the relation of our theory to existing models of the cerebellum and of motor control. Specific biophysical mechanisms can be readily suggested as part of a basic type of neural circuitry that can learn to approximate multidimensional input-output mappings from sets of examples and that is expected to be replicated in different regions of the brain and across modalities. The main points of the theory are: -the brain uses modules for multivariate function approximation as basic components of several of its information processing subsystems. -these modules are realized as HyperBF networks (Poggio and Girosi, 1990a,b). -HyperBF networks can be implemented in terms of biologically plausible mechanisms and circuitry. The theory predicts a specific type of population coding that represents an extension of schemes such as look-up tables. I will conclude with some speculations about the trade-off between memory and computation and the evolution of intelligence. 2004-10-04T15:31:25Z 2004-10-04T15:31:25Z 1990-12-01 AIM-1253 http://hdl.handle.net/1721.1/6559 en_US AIM-1253 2507547 bytes 1956243 bytes application/postscript application/pdf application/postscript application/pdf |
| spellingShingle | Poggio, Tomaso A Theory of How the Brain Might Work |
| title | A Theory of How the Brain Might Work |
| title_full | A Theory of How the Brain Might Work |
| title_fullStr | A Theory of How the Brain Might Work |
| title_full_unstemmed | A Theory of How the Brain Might Work |
| title_short | A Theory of How the Brain Might Work |
| title_sort | theory of how the brain might work |
| url | http://hdl.handle.net/1721.1/6559 |
| work_keys_str_mv | AT poggiotomaso atheoryofhowthebrainmightwork AT poggiotomaso theoryofhowthebrainmightwork |