Modulation of limbic resting-state networks by subthalamic nucleus deep brain 
stimulation

Eraifej, John; Cabral, Joana; Fernandes, Henrique M.; Kahan, Joshua; He, Shenghong; Mancini, Laura; Thornton, John; White, Mark; Yousry, Tarek; Zrinzo, Ludvic; Akram, Harith; Limousin, Patricia; Foltynie, Tom; Aziz, Tipu Z.; Deco, Gustavo; Kringelbach, Morten; Green, Alexander L.

doi:10.1162/netn_a_00297

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Modulation of limbic resting-state networks by subthalamic nucleus deep brain stimulation

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Deco, Gustavo
Center for Brain and Cognition, University Pompeu Fabra, Barcelona, Spain;
Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain;
Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Zitation

Eraifej, J., Cabral, J., Fernandes, H. M., Kahan, J., He, S., Mancini, L., et al. (2023). Modulation of limbic resting-state networks by subthalamic nucleus deep brain stimulation. Network Neuroscience, 7(2), 478-495. doi:10.1162/netn_a_00297.

Zitierlink: https://hdl.handle.net/21.11116/0000-000D-67F3-D

Zusammenfassung

Beyond the established effects of subthalamic nucleus deep brain stimulation (STN-DBS) in reducing motor symptoms in Parkinson's disease, recent evidence has highlighted the effect on non-motor symptoms. However, the impact of STN-DBS on disseminated networks remains unclear. This study aimed to perform a quantitative evaluation of network-specific modulation induced by STN-DBS using Leading Eigenvector Dynamics Analysis (LEiDA). We calculated the occupancy of resting-state networks (RSNs) in functional MRI data from 10 patients with Parkinson's disease implanted with STN-DBS and statistically compared between ON and OFF conditions. STN-DBS was found to specifically modulate the occupancy of networks overlapping with limbic RSNs. STN-DBS significantly increased the occupancy of an orbitofrontal limbic subsystem with respect to both DBS OFF (p = 0.0057) and 49 age-matched healthy controls (p = 0.0033). Occupancy of a diffuse limbic RSN was increased with STN-DBS OFF when compared with healthy controls (p = 0.021), but not when STN-DBS was ON, which indicates rebalancing of this network. These results highlight the modulatory effect of STN-DBS on components of the limbic system, particularly within the orbitofrontal cortex, a structure associated with reward processing. These results reinforce the value of quantitative biomarkers of RSN activity in evaluating the disseminated impact of brain stimulation techniques and the personalization of therapeutic strategies.