TY - GEN
T1 - Lateralized frontal-to-temporal cross-frequency coupling in cortical processing of pleasant odors
AU - Seet, Manuel S.
AU - Abbasi, Nida I.
AU - Hamano, Junji
AU - Chaudhury, Anumita
AU - Thakor, Nitish V.
AU - Dragomir, Andrei
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/5/4
Y1 - 2021/5/4
N2 - Olfactory perception recruits multiple neurocog-nitive processes, that are implemented across distributed but highly interactive brain areas housed primarily in the frontal and temporal lobes. Given that these brain areas have different functions and activity characteristics, the mechanisms supporting functional interactions between them are unclear. To address this knowledge gap, we analyzed EEG cross-frequency coupling (CFC) between frontal to left vs. right temporal regions during exposure to fragrances of varying subjective pleasantness. Our results show that higher-pleasantness fragrances gave rise to right-Iateralized θ - γ coupling and left-lateralized α - γ coupling, which likely represent memory processing and emotional processing respectively. Regression models reveal that fragrance pleasantness exhibits a linear relationship with θ - γ laterality, but a nonlinear relationship with α - γ laterality. These findings illustrate the significant role that CFCs play in long-distance neural communication in olfactory perception. Their robust dynamics in response to subjective odor evaluation render them as promising neural features for olfactory brain-computer interfacing.
AB - Olfactory perception recruits multiple neurocog-nitive processes, that are implemented across distributed but highly interactive brain areas housed primarily in the frontal and temporal lobes. Given that these brain areas have different functions and activity characteristics, the mechanisms supporting functional interactions between them are unclear. To address this knowledge gap, we analyzed EEG cross-frequency coupling (CFC) between frontal to left vs. right temporal regions during exposure to fragrances of varying subjective pleasantness. Our results show that higher-pleasantness fragrances gave rise to right-Iateralized θ - γ coupling and left-lateralized α - γ coupling, which likely represent memory processing and emotional processing respectively. Regression models reveal that fragrance pleasantness exhibits a linear relationship with θ - γ laterality, but a nonlinear relationship with α - γ laterality. These findings illustrate the significant role that CFCs play in long-distance neural communication in olfactory perception. Their robust dynamics in response to subjective odor evaluation render them as promising neural features for olfactory brain-computer interfacing.
KW - Electroencephalography
KW - Olfactory
KW - Perception
KW - Phase-Amplitude Coupling
UR - http://www.scopus.com/inward/record.url?scp=85107509846&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85107509846&partnerID=8YFLogxK
U2 - 10.1109/NER49283.2021.9441238
DO - 10.1109/NER49283.2021.9441238
M3 - Conference contribution
AN - SCOPUS:85107509846
T3 - International IEEE/EMBS Conference on Neural Engineering, NER
SP - 900
EP - 903
BT - 2021 10th International IEEE/EMBS Conference on Neural Engineering, NER 2021
PB - IEEE Computer Society
T2 - 10th International IEEE/EMBS Conference on Neural Engineering, NER 2021
Y2 - 4 May 2021 through 6 May 2021
ER -