Spatiotemporal dynamics of odor representations in the human brain revealed by EEG decoding.

ABSTRACT: How the human brain translates olfactory inputs into diverse perceptions, from pleasurable floral smells to sickening smells of decay, is one of the fundamental questions in olfaction. To examine how different aspects of olfactory perception emerge in space and time in the human brain, we performed time-resolved multivariate pattern analysis of scalp-recorded electroencephalogram responses to 10 perceptually diverse odors and associated the resulting decoding accuracies with perception and source activities. Mean decoding accuracies of odors exceeded the chance level 100 ms after odor onset and reached maxima at 350 ms. The result suggests that the neural representations of individual odors were maximally separated at 350 ms. Perceptual representations emerged following the decoding peak:

SUBMITTER: Kato M 

PROVIDER: S-EPMC9173780 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature