Invariant Global Motion Recognition in the Dorsal Visual System: A Unifying Theory.
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| Title: | Invariant Global Motion Recognition in the Dorsal Visual System: A Unifying Theory. |
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| Authors: | Rolls, Edmund T., Stringer, Simon M. |
| Source: | Neural Computation. Jan2007, Vol. 19 Issue 1, p139-169. 31p. |
| Subjects: | Vision, Retina, Posterior segment (Eye), Neurons, Short-term memory, Recognition (Psychology) |
| Abstract: | The motion of an object (such as a wheel rotating) is seen as consistent independent of its position and size on the retina. Neurons in higher cortical visual areas respond to these global motion stimuli invariantly, but neurons in early cortical areas with small receptive fields cannot represent this motion, not only because of the aperture problem but also because they do not have invariant representations. In a unifying hypothesiswith the design of the ventral cortical visual system, we propose that the dorsal visual system uses a hierarchical feedforward network architecture (V1, V2,MT,MSTd, parietal cortex) with training of the connections with a short-term memory trace associative synaptic modification rule to capture what is invariant at each stage. Simulations show that the proposal is computationally feasible, in that invariant representations of the motion flow fields produced by objects self-organize in the later layers of the architecture. The model produces invariant representations of the motion flow fields produced by global in-plane motion of an object, in-plane rotational motion, looming versus receding of the object, and object-based rotation about a principal axis. Thus, the dorsal and ventral visual systems may share some similar computational principles. [ABSTRACT FROM AUTHOR] |
| Copyright of Neural Computation is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 23263711 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Invariant Global Motion Recognition in the Dorsal Visual System: A Unifying Theory. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Rolls%2C+Edmund+T%2E%22">Rolls, Edmund T.</searchLink><br /><searchLink fieldCode="AR" term="%22Stringer%2C+Simon+M%2E%22">Stringer, Simon M.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Neural+Computation%22">Neural Computation</searchLink>. Jan2007, Vol. 19 Issue 1, p139-169. 31p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Vision%22">Vision</searchLink><br /><searchLink fieldCode="DE" term="%22Retina%22">Retina</searchLink><br /><searchLink fieldCode="DE" term="%22Posterior+segment+%28Eye%29%22">Posterior segment (Eye)</searchLink><br /><searchLink fieldCode="DE" term="%22Neurons%22">Neurons</searchLink><br /><searchLink fieldCode="DE" term="%22Short-term+memory%22">Short-term memory</searchLink><br /><searchLink fieldCode="DE" term="%22Recognition+%28Psychology%29%22">Recognition (Psychology)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The motion of an object (such as a wheel rotating) is seen as consistent independent of its position and size on the retina. Neurons in higher cortical visual areas respond to these global motion stimuli invariantly, but neurons in early cortical areas with small receptive fields cannot represent this motion, not only because of the aperture problem but also because they do not have invariant representations. In a unifying hypothesiswith the design of the ventral cortical visual system, we propose that the dorsal visual system uses a hierarchical feedforward network architecture (V1, V2,MT,MSTd, parietal cortex) with training of the connections with a short-term memory trace associative synaptic modification rule to capture what is invariant at each stage. Simulations show that the proposal is computationally feasible, in that invariant representations of the motion flow fields produced by objects self-organize in the later layers of the architecture. The model produces invariant representations of the motion flow fields produced by global in-plane motion of an object, in-plane rotational motion, looming versus receding of the object, and object-based rotation about a principal axis. Thus, the dorsal and ventral visual systems may share some similar computational principles. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Neural Computation is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1162/neco.2007.19.1.139 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 31 StartPage: 139 Subjects: – SubjectFull: Vision Type: general – SubjectFull: Retina Type: general – SubjectFull: Posterior segment (Eye) Type: general – SubjectFull: Neurons Type: general – SubjectFull: Short-term memory Type: general – SubjectFull: Recognition (Psychology) Type: general Titles: – TitleFull: Invariant Global Motion Recognition in the Dorsal Visual System: A Unifying Theory. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Rolls, Edmund T. – PersonEntity: Name: NameFull: Stringer, Simon M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 08997667 Numbering: – Type: volume Value: 19 – Type: issue Value: 1 Titles: – TitleFull: Neural Computation Type: main |
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