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  Local field potential activity in the macaque anterior insular cortex

Smuda, J., Klein, C., Murayama, Y., Steudel, T., Krampe, E., Oeltermann, A., et al. (2017). Local field potential activity in the macaque anterior insular cortex. Poster presented at 12th National Congress of the Belgian Society for Neuroscience (BSN 2017), Ghent, Belgium. doi:10.3389/conf.fnins.2017.94.00021.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-C47D-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-93EE-D
Genre: Poster

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 Creators:
Smuda, J1, 2, Author              
Klein, CA1, 2, Author              
Murayama, Y1, 2, Author              
Steudel, T1, 2, Author              
Krampe, E1, 2, Author              
Oeltermann, A1, 2, Author              
Werner, J1, 2, Author              
Logothetis, NK1, 2, Author              
Evrard, H1, 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, ou_1497794              

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 Abstract: The central representation and the goal-directed control of homeostatic bodily states are integrated in the anterior insular cortex (AIC) as core processes underlying emotion, cognition, and subjective perception. The AIC has been thought as a “node” of the saliency network with a role in coordinating brain network activity based on the detection of homeostatic changes. A recent model proposed that the left and right AIC preferentially represent parasympathetic and sympathetic activity while underlying appetitive and aversive emotions, respectively. Given the possible role of the AIC in switching brain network activities, we examined whether this asymmetry occurs in the functional relation of the AIC with the rest of the brain. We used laminar electrodes to record local field potential activity in the left and right AIC while simultaneously acquiring functional magnetic resonance imaging (fMRI) scans in four rhesus macaque monkeys. The electrode was placed in the AIC area containing the von Economo neuron (or ‘VEN area’), an area shown previously to be larger and independently contain more VENs on the right than on the left side (Evrard et al. 2012 Neuron 74:482-9). The ongoing spontaneous neuronal activity was analyzed focusing on the local field potential (LFP) gamma band (56-79 Hz) where frequent increases in amplitude could be observed. These gamma events were in most cases unilateral, with occurrence either in the left or in the right VEN area in the majority of the cases and only few cases where gamma band activity increased simultaneously on both sides. Following the detection of these gamma events, their occurrence was used to trigger and average the blood-oxygen-level dependent (BOLD) signal from the fMRI scans, a method called ‘neural-event-triggered fMRI’ (NET-fMRI) (Logothetis et al. Nature 2012 491:547-53). The examination and mapping of the BOLD signal change during asymmetric events revealed markedly different patterns of activation and deactivation in vast regions of the brain. These effects might substantiate a fundamental autonomic forebrain asymmetry balancing complex nurturing and expending behaviors and feelings in a homeostatically optimal manner.

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 Dates: 2017-05
 Publication Status: Published online
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 Identifiers: DOI: 10.3389/conf.fnins.2017.94.00021
BibTex Citekey: SmudaKMSKOWLE2017
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Title: 12th National Congress of the Belgian Society for Neuroscience (BSN 2017)
Place of Event: Ghent, Belgium
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Title: Frontiers in Neuroscience
  Other : Front Neurosci
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Frontiers Research Foundation
Pages: - Volume / Issue: 2017 (12th National Congress of the Belgian Society for Neuroscience) Sequence Number: - Start / End Page: - Identifier: ISSN: 1662-4548
ISSN: 1662-453X
CoNE: /journals/resource/1662-4548