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  Object-load and feature-load modulate EEG in a short-term memory task

Busch, N. A., & Herrmann, C. S. (2003). Object-load and feature-load modulate EEG in a short-term memory task. NeuroReport, 14(13), 1721-1724. doi:10.1097/01.wnr.0000087727.58565.1b.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-CD9D-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-2960-8
Genre: Journal Article

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 Creators:
Busch, Niko A.1, Author              
Herrmann, Christoph S.1, Author              
Affiliations:
1MPI of Cognitive Neuroscience (Leipzig, -2003), The Prior Institutes, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634574              

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Free keywords: EEG; ERP; Feature integration; 10 Hz; P3; Memory load; Short-term memory
 Abstract: Behavioral studies have indicated that multiple features of one object can be stored in working memory without additional costs. In contrast, visual search experiments revealed that search for a multi-featured object takes more time than for a single-featured object. We used EEG to differentiate the effect of object-load and feature-load in a short-term memory task. We independently varied the amount of objects and features that had to be memorized. Object-load modulated P3 amplitude during encoding and induced 10 Hz oscillations during the retention interval. Feature-load modulated the P3 during retrieval. Thus, only object-load seemed to influence encoding and retention while feature-load played a crucial role during retrieval. Our results demonstrate that object-load and feature-load influence short-term memory at different stages.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 239046
Other: P6600
DOI: 10.1097/01.wnr.0000087727.58565.1b
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Title: NeuroReport
Source Genre: Journal
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Publ. Info: Oxford, UK : Rapid Communications of Oxford Ltd.
Pages: - Volume / Issue: 14 (13) Sequence Number: - Start / End Page: 1721 - 1724 Identifier: ISSN: 0959-4965
CoNE: /journals/resource/954925578070