Offline tDCS modulates prefrontal-cortical-subcortical-cerebellar fear pathways in delayed fear extinction
- PMID: 34694466
- DOI: 10.1007/s00221-021-06248-9
Offline tDCS modulates prefrontal-cortical-subcortical-cerebellar fear pathways in delayed fear extinction
Abstract
Transcranial direct current stimulation (tDCS) has been studied to enhance extinction-based treatments for anxiety disorders. However, the field shows conflicting results about its anxiolytic effect and only a few studies have observed the extinction of consolidated memories. We looked to study the effect of offline 1 mA tDCS over the right dorsolateral pre-frontal cortex across the fear pathways, in consolidated fear response during delayed extinction. Participants (N = 34 women) underwent in a two-day fear conditioning procedure. On day 1, participants were assigned to the control group (N = 18) or the tDCS group (N = 16) and went through a fear acquisition procedure. On day 2, the tDCS group received 20 min tDCS before extinction and while inside the MRI scanner. The control group completed the extinction procedure only. The tDCS session (for the tDCS group) and the fMRI scan (for both groups) were completed just on the second day. Univariate fMRI analysis showed stimulation-dependent activity during late extinction with the tDCS group showing decreased neural activity during the processing of threat cues (CS +) and increased activity during the processing of safety cues (CS -), in prefrontal, postcentral and paracentral regions, during late extinction. ROI to whole-brain psychophysiological interaction (PPI) analysis showed the tDCS effect on the connectivity between the left dorsolateral prefrontal cortex three cortical-amygdalo-hippocampal-cerebellar pathway clusters during the processing of the CS + in late extinction (TFCE corrected; p < 0.05). Increased neuronal activity during the processing of safety cues and stronger coupling during the processing of threat cues might be the mechanisms by which tDCS contributes to stimuli discrimination.
Keywords: Anxiety; Cortical––Amygdalo–Hippocampal–Cerebellar pathways; Delayed extinction; Partial fear conditioning; Psychophysiological analysis; tDCS.
© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
Similar articles
-
Effects of transcranial direct current stimulation on neural activity and functional connectivity during fear extinction.Int J Clin Health Psychol. 2023 Jan-Apr;23(1):100342. doi: 10.1016/j.ijchp.2022.100342. Epub 2022 Oct 15. Int J Clin Health Psychol. 2023. PMID: 36299490 Free PMC article.
-
The effect of cathodal tDCS on fear extinction: A cross-measures study.PLoS One. 2019 Sep 18;14(9):e0221282. doi: 10.1371/journal.pone.0221282. eCollection 2019. PLoS One. 2019. PMID: 31532768 Free PMC article.
-
Good moments to stimulate the brain - A randomized controlled double-blinded study on anodal transcranial direct current stimulation of the ventromedial prefrontal cortex on two different time points in a two-day fear conditioning paradigm.Behav Brain Res. 2024 Mar 5;460:114804. doi: 10.1016/j.bbr.2023.114804. Epub 2023 Dec 14. Behav Brain Res. 2024. PMID: 38103872 Clinical Trial.
-
Prefrontal but not cerebellar tDCS attenuates renewal of extinguished conditioned eyeblink responses.Neurobiol Learn Mem. 2020 Apr;170:107137. doi: 10.1016/j.nlm.2019.107137. Epub 2019 Dec 12. Neurobiol Learn Mem. 2020. PMID: 31838223 Review.
-
The effect of transcranial direct current and magnetic stimulation on fear extinction and return of fear: A meta-analysis and systematic review.J Affect Disord. 2024 Oct 1;362:263-286. doi: 10.1016/j.jad.2024.06.060. Epub 2024 Jun 21. J Affect Disord. 2024. PMID: 38908557 Review.
Cited by
-
Effects of transcranial direct current stimulation on neural activity and functional connectivity during fear extinction.Int J Clin Health Psychol. 2023 Jan-Apr;23(1):100342. doi: 10.1016/j.ijchp.2022.100342. Epub 2022 Oct 15. Int J Clin Health Psychol. 2023. PMID: 36299490 Free PMC article.
-
The cerebellum and fear extinction: evidence from rodent and human studies.Front Syst Neurosci. 2023 Apr 21;17:1166166. doi: 10.3389/fnsys.2023.1166166. eCollection 2023. Front Syst Neurosci. 2023. PMID: 37152612 Free PMC article. Review.
References
-
- Abend R, van ’t Wout M (2018) Commentary: augmentation of fear extinction by transcranial direct current stimulation (tDCS). Front Behav Neurosci. https://doi.org/10.3389/fnbeh.2018.00121 - DOI - PubMed - PMC
-
- Abend R, Jalon I, Gurevitch G, Sar-El R, Shechner T, Pine DS, Hendler T, Bar-Haim Y (2016) Modulation of fear extinction processes using transcranial electrical stimulation. Transl Psychiatry 6:e913–e913. https://doi.org/10.1038/tp.2016.197 - DOI - PubMed - PMC
-
- Agren T, Engman J, Frick A, Bjorkstrand J, Larsson E-M, Furmark T, Fredrikson M (2012) Disruption of reconsolidation. Science 337:1550–1552. https://doi.org/10.1126/science.1223006 - DOI - PubMed
-
- Alvarez RP, Biggs A, Chen G, Pine DS, Grillon C (2008) Contextual fear conditioning in humans: cortical-hippocampal and amygdala contributions. J Neurosci off J Soc Neurosci 28:6211–6219. https://doi.org/10.1523/JNEUROSCI.1246-08.2008 - DOI
-
- Antal A, Bikson M, Datta A, Lafon B, Dechent P, Parra LC, Paulus W (2014) Imaging artifacts induced by electrical stimulation during conventional fMRI of the brain. NeuroImage Neuro-Enhanc 85:1040–1047. https://doi.org/10.1016/j.neuroimage.2012.10.026 - DOI
MeSH terms
Grants and funding
LinkOut - more resources
Full Text Sources