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  Selectivity of local field potentials to natural images in primate V4 and prefrontal cortex

Liebe, S., Logothetis, N., & Rainer, G. (2009). Selectivity of local field potentials to natural images in primate V4 and prefrontal cortex. Poster presented at 32nd European Conference on Visual Perception (ECVP 2009), Regensburg, Germany.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C3B1-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-101C-C
Genre: Poster

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 Creators:
Liebe, S1, 2, Author              
Logothetis, NK1, 2, Author              
Rainer, G1, 2, Author              
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Both the extrastriate area V4 and the prefrontal cortex (PF) play an important role in the processing of visual information. Their role can be understood by examining single unit activity as well as local field potential responses that are indicators of dendro-somatic events. Here we studied the interaction between luminance- and colour-based structural information in natural images on the tuning properties of local field potential responses in both cortical areas while monkeys were performing a visual recognition task. Our analyses focused on the stimulus-locked LFP waveforms (or visually evoked potential, VEP). In both areas, a majority of sites showed significant VEPs to natural images. In addition, our analysis revealed that VEP amplitudes in V4 were strongly modulated by colour, but not by structural content of the image. In contrast, amplitudes in prefrontal cortex were strongly modulated by image structure, irrespective of colour. These results suggest, that V4 is a highly colour sensitive area as measured by the LFP, whereas the LFP in PF cortex reflects the informational content of natural images.

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 Dates: 2009-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: LiebeLR2009
DOI: 10.1177/03010066090380S101
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Title: 32nd European Conference on Visual Perception (ECVP 2009)
Place of Event: Regensburg, Germany
Start-/End Date: 2009-08-24 - 2009-08-28

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 38 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 37 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369