Bibliographic Details
| Title: |
Changes in the functional visual field during search with and without eye movements |
| Authors: |
Motter, Brad C.1,2 motterb@cnyrc.org, Simoni, Diglio A.1,3 diglio@simoni.org |
| Source: |
Vision Research. Oct2008, Vol. 48 Issue 22, p2382-2393. 12p. |
| Subjects: |
Visual fields, Eye movements, Evoked potentials (Electrophysiology), Density |
| Abstract: |
Abstract: The size of the functional visual field (FVF) is dynamic, changing with the context and attentive demand that each fixation brings as we move our eyes and head to explore the visual scene. Using performance measures of the FVF we show that during search conditions with eye movements, the FVF is small compared to the size of the FVF measured during search without eye movements. In all cases the size of the FVF is constrained by the density of distracting items. During search without eye movements the FVF expands with time; subjects have idiosyncratic spatial biases suggesting covert shifts of attention. For search within the constraints imposed by item density, the rate of item inspection is the same across all search conditions. Array set size effects are not apparent once stimulus density is taken into account, a result that is consistent with a spatial constraint for the FVF based on the cortical separation hypothesis. [Copyright &y& Elsevier] |
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Copyright of Vision Research is the property of Pergamon Press - An Imprint of Elsevier Science 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: |
Engineering Source |
