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  Decoding the contents of visual short-term memory from human visual and parietal cortex

Christophel, T. B., Hebart, M. N., & Haynes, J.-D. (2012). Decoding the contents of visual short-term memory from human visual and parietal cortex. The Journal of Neuroscience, 32(38), 12983-12989. doi:10.1523/JNEUROSCI.0184-12.2012.

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Christophel_2012_Decoding.pdf (Verlagsversion), 2MB
 
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 Urheber:
Christophel, Thomas B.1, 2, Autor
Hebart, Martin N.1, 2, 3, Autor           
Haynes, John-Dylan1, 2, 3, 4, 5, Autor           
Affiliations:
1Bernstein Center for Computational Neuroscience, Berlin, Germany, ou_persistent22              
2Berlin Center for Advanced Neuroimaging (BCAN), Charité University Medicine Berlin, Germany, ou_persistent22              
3Berlin School of Mind and Brain, Humboldt University Berlin, Germany, ou_persistent22              
4NeuroCure Cluster of Excellence, Charité University Medicine Berlin, Germany, ou_persistent22              
5Max Planck Fellow Research Group Attention and Awareness, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634553              

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 Zusammenfassung: How content is stored in the human brain during visual short-term memory (VSTM) is still an open question. Different theories postulate storage of remembered stimuli in prefrontal, parietal, or visual areas. Aiming at a distinction between these theories, we investigated the content-specificity of BOLD signals from various brain regions during a VSTM task using multivariate pattern classification. To participate in memory maintenance, candidate regions would need to have information about the different contents held in memory. We identified two brain regions where local patterns of fMRI signals represented the remembered content. Apart from the previously established storage in visual areas, we also discovered an area in the posterior parietal cortex where activity patterns allowed us to decode the specific stimuli held in memory. Our results demonstrate that storage in VSTM extends beyond visual areas, but no frontal regions were found. Thus, while frontal and parietal areas typically coactivate during VSTM, maintenance of content in the frontoparietal network might be limited to parietal cortex.

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Sprache(n): eng - English
 Datum: 2012-07-052012-01-132012-07-192012-09-19
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1523/JNEUROSCI.0184-12.2012
PMID: 22993415
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Titel: The Journal of Neuroscience
  Andere : J. Neurosci.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Baltimore, MD : The Society
Seiten: - Band / Heft: 32 (38) Artikelnummer: - Start- / Endseite: 12983 - 12989 Identifikator: ISSN: 0270-6474
CoNE: https://pure.mpg.de/cone/journals/resource/954925502187