Frequency dependent emotion differentiation and directional coupling in amygdala, orbitofrontal and medial prefrontal cortex network with intracranial recordings

The amygdala, orbitofrontal cortex (OFC) and medial prefrontal cortex (mPFC) form a crucial part of the emotion circuit, yet their emotion induced responses and interactions have been poorly investigated with direct intracranial recordings. Such high-fidelity signals can uncover precise spectral dyn...

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Veröffentlicht in:Molecular psychiatry 2023-04, Vol.28 (4), p.1636-1646
Hauptverfasser: Sonkusare, Saurabh, Qiong, Ding, Zhao, Yijie, Liu, Wei, Yang, Ruoqi, Mandali, Alekhya, Manssuer, Luis, Zhang, Chencheng, Cao, Chunyan, Sun, Bomin, Zhan, Shikun, Voon, Valerie
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container_issue 4
container_start_page 1636
container_title Molecular psychiatry
container_volume 28
creator Sonkusare, Saurabh
Qiong, Ding
Zhao, Yijie
Liu, Wei
Yang, Ruoqi
Mandali, Alekhya
Manssuer, Luis
Zhang, Chencheng
Cao, Chunyan
Sun, Bomin
Zhan, Shikun
Voon, Valerie
description The amygdala, orbitofrontal cortex (OFC) and medial prefrontal cortex (mPFC) form a crucial part of the emotion circuit, yet their emotion induced responses and interactions have been poorly investigated with direct intracranial recordings. Such high-fidelity signals can uncover precise spectral dynamics and frequency differences in valence processing allowing novel insights on neuromodulation. Here, leveraging the unique spatio-temporal advantages of intracranial electroencephalography (iEEG) from a cohort of 35 patients with intractable epilepsy (with 71 contacts in amygdala, 31 in OFC and 43 in mPFC), we assessed the spectral dynamics and interactions between the amygdala, OFC and mPFC during an emotional picture viewing task. Task induced activity showed greater broadband gamma activity in the negative condition compared to positive condition in all the three regions. Similarly, beta activity was increased in the negative condition in the amygdala and OFC while decreased in mPFC. Furthermore, beta activity of amygdala showed significant negative association with valence ratings. Critically, model-based computational analyses revealed unidirectional connectivity from mPFC to the amygdala and bidirectional communication between OFC-amygdala and OFC-mPFC. Our findings provide direct neurophysiological evidence for a much-posited model of top-down influence of mPFC over amygdala and a bidirectional influence between OFC and the amygdala. Altogether, in a relatively large sample size with human intracranial neuronal recordings, we highlight valence-dependent spectral dynamics and dyadic coupling within the amygdala-mPFC-OFC network with implications for potential targeted neuromodulation in emotion processing.
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subjects 631/378
631/443
9/30
Amygdala
Amygdala - physiology
Behavioral Sciences
Biological Psychology
Brain
EEG
Electroencephalography
Emotions
Emotions - physiology
Epilepsy
Frontal Lobe
Humans
Medical imaging
Medicine
Medicine & Public Health
Neural networks
Neural Pathways - physiology
Neuroimaging
Neuromodulation
Neurosciences
Neurosurgery
Pharmacotherapy
Prefrontal cortex
Prefrontal Cortex - physiology
Psychiatry
Temporal lobe
Visual stimuli
title Frequency dependent emotion differentiation and directional coupling in amygdala, orbitofrontal and medial prefrontal cortex network with intracranial recordings
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