Odor Pleasantness Modulates Functional Connectivity in the Olfactory Hedonic Processing Network.
brain connectivity
electroencephalography
hedonic evaluation
lateralization
olfaction
Journal
Brain sciences
ISSN: 2076-3425
Titre abrégé: Brain Sci
Pays: Switzerland
ID NLM: 101598646
Informations de publication
Date de publication:
19 Oct 2022
19 Oct 2022
Historique:
received:
13
09
2022
revised:
10
10
2022
accepted:
14
10
2022
entrez:
27
10
2022
pubmed:
28
10
2022
medline:
28
10
2022
Statut:
epublish
Résumé
Olfactory hedonic evaluation is the primary dimension of olfactory perception and thus central to our sense of smell. It involves complex interactions between brain regions associated with sensory, affective and reward processing. Despite a recent increase in interest, several aspects of olfactory hedonic evaluation remain ambiguous: uncertainty surrounds the communication between, and interaction among, brain areas during hedonic evaluation of olfactory stimuli with different levels of pleasantness, as well as the corresponding supporting oscillatory mechanisms. In our study we investigated changes in functional interactions among brain areas in response to odor stimuli using electroencephalography (EEG). To this goal, functional connectivity networks were estimated based on phase synchronization between EEG signals using the weighted phase lag index (wPLI). Graph theoretic metrics were subsequently used to quantify the resulting changes in functional connectivity of relevant brain regions involved in olfactory hedonic evaluation. Our results indicate that odor stimuli of different hedonic values evoke significantly different interaction patterns among brain regions within the olfactory cortex, as well as in the anterior cingulate and orbitofrontal cortices. Furthermore, significant hemispheric laterality effects have been observed in the prefrontal and anterior cingulate cortices, specifically in the beta ((13-30) Hz) and gamma ((30-40) Hz) frequency bands.
Identifiants
pubmed: 36291341
pii: brainsci12101408
doi: 10.3390/brainsci12101408
pmc: PMC9599424
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Agency for Science, Technology and Research
ID : APG2013/110
Organisme : Procter and Gamble
ID : APG2013/131
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