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Differential dynamics of spatial attention, position, and color coding within the parietofrontal network
Université Claude Bernard Lyon, France .
Université Claude Bernard Lyon, France .
Université Claude Bernard Lyon, France .
Université Claude Bernard Lyon, France .
2015 (English)In: Journal of Neuroscience, ISSN 0270-6474, E-ISSN 1529-2401, Vol. 35, no 7, 3174-3189 p.Article in journal (Refereed) Published
Abstract [en]

Despite an ever growing knowledge on howparietal and prefrontal neurons encode low-level spatial and color information or higher-level information, such as spatial attention, an understanding of how these cortical regions process neuronal information at the population level is still missing. A simple assumption would be that the function and temporal response profiles of these neuronal populations match that of its constituting individual cells. However, several recent studies suggest that this is not necessarily the case and that the single-cell approach overlooks dynamic changes in how information is distributed over the neuronal population. Here, we use a time-resolved population pattern analysis to explore how spatialposition, spatial attention and color information are differentially encoded and maintained in the macaque monkey prefrontal (frontal eye fields) and parietal cortex (lateral intraparietal area). Overall, our work brings about three novel observations. First, we show that parietal and prefrontal populations operate in two distinct population regimens for the encoding of sensory and cognitive information: a stationary mode and a dynamic mode. Second, we show that the temporal dynamics of a heterogeneous neuronal population brings about complementary information to that of its functional subpopulations. Thus, both need to be investigated in parallel. Last, we show that identifying the neuronal configuration in which a neuronal population encodes given information can serve to reveal this same information in a different context. All together, this work challenges common views on neural coding in the parietofrontal network. 

Place, publisher, year, edition, pages
United States, 2015. Vol. 35, no 7, 3174-3189 p.
National Category
Other Medical Sciences
Identifiers
URN: urn:nbn:se:mdh:diva-29677DOI: 10.1523/JNEUROSCI.2370-14.2015Scopus ID: 2-s2.0-84923009364OAI: oai:DiVA.org:mdh-29677DiVA: diva2:875941
Available from: 2015-12-02 Created: 2015-11-26 Last updated: 2015-12-02Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf