Integration of valence and conflict processing through cellular-field interactions in human subgenual cingulate during emotional face processing in treatment-resistant depression.
Nicole A ZalaskyFeng LuoLinda H KimM Sohail NoorElliot C BrownAna P ArantesRajamannar RamasubbuAaron J GruberZelma H T KissDarren L ClarkPublished in: Molecular psychiatry (2024)
The subgenual anterior cingulate cortex (sgACC) has been identified as a key brain area involved in various cognitive and emotional processes. While the sgACC has been implicated in both emotional valuation and emotional conflict monitoring, it is still unclear how this area integrates multiple functions. We characterized both single neuron and local field oscillatory activity in 14 patients undergoing sgACC deep brain stimulation for treatment-resistant depression. During recording, patients were presented with a modified Stroop task containing emotional face images that varied in valence and congruence. We further analyzed spike-field interactions to understand how network dynamics influence single neuron activity in this area. Most single neurons responded to both valence and congruence, revealing that sgACC neuronal activity can encode multiple processes within the same task, indicative of multifunctionality. During peak neuronal response, we observed increased spectral power in low frequency oscillations, including theta-band synchronization (4-8 Hz), as well as desynchronization in beta-band frequencies (13-30 Hz). Theta activity was modulated by current trial congruency with greater increases in spectral power following non-congruent stimuli, while beta desynchronizations occurred regardless of emotional valence. Spike-field interactions revealed that local sgACC spiking was phase-locked most prominently to the beta band, whereas phase-locking to the theta band occurred in fewer neurons overall but was modulated more strongly for neurons that were responsive to task. Our findings provide the first direct evidence of spike-field interactions relating to emotional cognitive processing in the human sgACC. Furthermore, we directly related theta oscillatory dynamics in human sgACC to current trial congruency, demonstrating it as an important regulator during conflict detection. Our data endorse the sgACC as an integrative hub for cognitive emotional processing through modulation of beta and theta network activity.
Keyphrases
- working memory
- endothelial cells
- transcranial magnetic stimulation
- deep brain stimulation
- patients undergoing
- high frequency
- clinical trial
- optical coherence tomography
- end stage renal disease
- chronic kidney disease
- prefrontal cortex
- induced pluripotent stem cells
- magnetic resonance imaging
- parkinson disease
- ejection fraction
- transcription factor
- randomized controlled trial
- computed tomography
- phase iii
- network analysis
- deep learning
- blood brain barrier
- peritoneal dialysis
- brain injury
- spinal cord injury
- white matter
- drug induced