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Ferdek MA, Oosterman JM, Adamczyk AK, van Aken M, Woudsma KJ, Peeters BWMM, Nap A, Wyczesany M, van Rijn CM. Effective Connectivity of Beta Oscillations in Endometriosis-Related Chronic Pain During rest and Pain-Related Mental Imagery. J Pain 2019; 20:1446-1458. [PMID: 31152855 DOI: 10.1016/j.jpain.2019.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/09/2019] [Accepted: 05/22/2019] [Indexed: 12/22/2022]
Abstract
Using the EEG recordings of patients with endometriosis-related chronic pelvic pain, we have examined the effective connectivity within the cortical pain-related network during rest and during pain-related imagery. During rest, an altered connectivity was hypothesized between cortical somatosensory pain areas and regions involved in emotional and cognitive modulation of pain. During pain-related imagery, alterations in prefrontal-temporal connectivity were expected. The effective connectivity was estimated using the Directed Transfer Function method. Differences between endometriosis patients and controls were found in the beta band (14-25 Hz). During rest, endometriosis was associated with an increased connectivity from the left dorsolateral prefrontal cortex to the left somatosensory cortex and also from the left somatosensory cortex to the orbitofrontal cortex and the right temporal cortex. These results might be related to sustained activation of the somatosensory pain system caused by the ongoing pain. During pain-related imagery, endometriosis patients showed an increased connectivity from the left dorsolateral prefrontal cortex to the right temporal cortex. This finding might point to impaired emotional regulation when processing pain-related stimuli, or it might be related to altered memorization of pain experiences. Results of this study open up new directions in chronic pain research aimed at exploring the beta band connectivity alterations. PERSPECTIVE: This study examined the pain system's dynamics in endometriosis patients with chronic pelvic pain during resting-state and pain-related mental imagery. The results could contribute to the development of new therapies using guided mental imagery.
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Affiliation(s)
- Magdalena A Ferdek
- Cognition and Behaviour, Donders Institute for Brain, Radboud University, Nijmegen, the Netherlands; Psychophysiology Laboratory, Institute of Psychology, Jagiellonian University, Krakow, Poland.
| | - Joukje M Oosterman
- Cognition and Behaviour, Donders Institute for Brain, Radboud University, Nijmegen, the Netherlands
| | - Agnieszka K Adamczyk
- Psychophysiology Laboratory, Institute of Psychology, Jagiellonian University, Krakow, Poland
| | - Mieke van Aken
- Department of Anatomy, Radboud University Medical Centre, Nijmegen, the Netherlands; Department of Gynaecology and Obstetrics, Arnhem, the Netherlands
| | - Kelly J Woudsma
- Cognition and Behaviour, Donders Institute for Brain, Radboud University, Nijmegen, the Netherlands
| | | | - Annemiek Nap
- Department of Gynaecology and Obstetrics, Arnhem, the Netherlands
| | - Miroslaw Wyczesany
- Psychophysiology Laboratory, Institute of Psychology, Jagiellonian University, Krakow, Poland
| | - Clementina M van Rijn
- Cognition and Behaviour, Donders Institute for Brain, Radboud University, Nijmegen, the Netherlands
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