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Rapid enumeration within a fraction of a single glance: The role of visible persistence in object individuation capacity.

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Title: Rapid enumeration within a fraction of a single glance: The role of visible persistence in object individuation capacity.
Authors: Wutz, Andreas (AUTHOR), Caramazza, Alfonso (AUTHOR), Melcher, David (AUTHOR)
Source: Visual Cognition. Jun2012, Vol. 20 Issue 6, p717-732. 16p.
Subjects: Neuropsychology, Explicit memory, Task performance, Dimensional preference, Visual acuity, Sensory perception, Visual perception
Abstract: The number of items that can be individuated at a single glance is limited. Here, we investigate object individuation at a higher temporal resolution, in fractions of a single glance. In two experiments involving object individuation we manipulated the duration of visual persistence of the target items with a forward masking procedure. The number of items as well as their stimulus–onset asynchrony (SOA) to the mask was varied independently. The results showed main effects of numerosity and SOA, as well as an interaction. These effects were not caused by a generic reduction of item visibility by the mask. Instead, the SOA manipulation appeared to fractionate the time to access the sensory image. These findings suggest that the capacity limit of 3–4 items found in object individuation is, at least partially, the consequence of the temporal window of access to sensory information. [ABSTRACT FROM AUTHOR]
Copyright of Visual Cognition is the property of Taylor & Francis Ltd 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
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  Data: Rapid enumeration within a fraction of a single glance: The role of visible persistence in object individuation capacity.
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  Data: <searchLink fieldCode="AR" term="%22Wutz%2C+Andreas%22">Wutz, Andreas</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Caramazza%2C+Alfonso%22">Caramazza, Alfonso</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Melcher%2C+David%22">Melcher, David</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Visual+Cognition%22">Visual Cognition</searchLink>. Jun2012, Vol. 20 Issue 6, p717-732. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Neuropsychology%22">Neuropsychology</searchLink><br /><searchLink fieldCode="DE" term="%22Explicit+memory%22">Explicit memory</searchLink><br /><searchLink fieldCode="DE" term="%22Task+performance%22">Task performance</searchLink><br /><searchLink fieldCode="DE" term="%22Dimensional+preference%22">Dimensional preference</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+acuity%22">Visual acuity</searchLink><br /><searchLink fieldCode="DE" term="%22Sensory+perception%22">Sensory perception</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+perception%22">Visual perception</searchLink>
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  Data: The number of items that can be individuated at a single glance is limited. Here, we investigate object individuation at a higher temporal resolution, in fractions of a single glance. In two experiments involving object individuation we manipulated the duration of visual persistence of the target items with a forward masking procedure. The number of items as well as their stimulus–onset asynchrony (SOA) to the mask was varied independently. The results showed main effects of numerosity and SOA, as well as an interaction. These effects were not caused by a generic reduction of item visibility by the mask. Instead, the SOA manipulation appeared to fractionate the time to access the sensory image. These findings suggest that the capacity limit of 3–4 items found in object individuation is, at least partially, the consequence of the temporal window of access to sensory information. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Visual Cognition is the property of Taylor & Francis Ltd 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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              Text: Jun2012
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