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Graeme-Drury TJ, Worthen SF, Maden M, Raphael JH, Khan S, Vreugdenhil M, Duarte RV. Contact Heat in Magnetoencephalography: A Systematic Review. Can J Neurol Sci 2024; 51:179-186. [PMID: 36803520 DOI: 10.1017/cjn.2023.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
BACKGROUND Contact heat is commonly used in experimental research to evoke brain activity, most frequently acquired with electroencephalography (EEG). Although magnetoencephalography (MEG) improves spatial resolution, using some contact heat stimulators with MEG can present methodological challenges. This systematic review assesses studies that utilise contact heat in MEG, their findings and possible directions for further research. METHODS Eight electronic databases were searched for relevant studies, in addition to the selected papers' reference lists, citations and ConnectedPapers maps. Best practice recommendations for systematic reviews were followed. Papers met inclusion criteria if they used MEG to record brain activity in conjunction with contact heat, regardless of stimulator equipment or paradigm. RESULTS Of 646 search results, seven studies met the inclusion criteria. Studies demonstrated effective electromagnetic artefact removal from MEG data, the ability to elicit affective anticipation and differences in deep brain stimulation responders. We identify contact heat stimulus parameters that should be reported in publications to ensure comparisons between data outcomes are consistent. CONCLUSIONS Contact heat is a viable alternative to laser or electrical stimulation in experimental research, and methods exist to successfully mitigate any electromagnetic noise generated by PATHWAY CHEPS equipment - though there is a dearth of literature exploring the post-stimulus time window.
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Affiliation(s)
| | - Siân F Worthen
- Aston Institute of Health and Neurodevelopment, Birmingham, UK
| | - Michelle Maden
- Liverpool Reviews and Implementation Group; University of Liverpool, Liverpool, UK
| | - Jon H Raphael
- School of Health Sciences, Birmingham City University, Birmingham, UK
| | - Salim Khan
- School of Health Sciences, Birmingham City University, Birmingham, UK
| | | | - Rui V Duarte
- Liverpool Reviews and Implementation Group; University of Liverpool, Liverpool, UK
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Shigihara Y, Hoshi H, Fukasawa K, Ichikawa S, Kobayashi M, Sakamoto Y, Negishi K, Haraguchi R, Konno S. Resting-State Magnetoencephalography Reveals Neurobiological Bridges Between Pain and Cognitive Impairment. Pain Ther 2020; 10:349-361. [PMID: 33095348 PMCID: PMC8119570 DOI: 10.1007/s40122-020-00213-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/15/2020] [Indexed: 12/04/2022] Open
Abstract
Introduction Pain has been identified as a risk factor for cognitive dysfunction, which in turn affects pain perception. Although pain, cognitive dysfunction, and their interaction are clinically important, the neural mechanism connecting the two phenomena remains unclear. Methods The resting-state brain activity of 38 participants was measured using magnetoencephalography before and after the patients underwent selective nerve root block (SNRB) for the treatment of their pain. We then assessed the extent to which these data correlated with the subjective levels of pain experienced by the patients across SNRB based on the visual analogue scale and the cognitive status of the patients measured after SNRB using the Japanese versions of the Mini-Mental State Examination (MMSE-J). Results Slow oscillations (delta) in the right precentral gyrus, right middle temporal gyrus, and left superior frontal gyrus were negatively correlated with the subjective level of pain, and fast oscillations (gamma) in the right insular cortex and right middle temporal gyrus before SNRB were negatively correlated with the MMSE-J score afterwards. These correlations disappeared after SNRB. Conclusion The presently observed changes in neural activity, as indicated by oscillation changes, might represent the transient bridge between pain and cognitive dysfunction in patients with severe pain. Our findings underscore the importance of treating pain before a transient diminishment of cognitive function becomes persistent.
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Affiliation(s)
- Yoshihito Shigihara
- Precision Medicine Centre, Hokuto Hospital, Obihiro, Japan. .,Precision Medicine Centre, Kumagaya General Hospital, Kumagaya, Japan.
| | - Hideyuki Hoshi
- Precision Medicine Centre, Hokuto Hospital, Obihiro, Japan
| | | | - Sayuri Ichikawa
- Clinical Laboratory, Kumagaya General Hospital, Kumagaya, Japan
| | - Momoko Kobayashi
- Precision Medicine Centre, Kumagaya General Hospital, Kumagaya, Japan
| | - Yuki Sakamoto
- Precision Medicine Centre, Kumagaya General Hospital, Kumagaya, Japan
| | | | - Rika Haraguchi
- Clinical Laboratory, Kumagaya General Hospital, Kumagaya, Japan
| | - Shin Konno
- Department of Orthopaedics, Kumagaya General Hospital, Kumagaya, Japan
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Jones SE, Lempka SF, Gopalakrishnan R, Baker KB, Beall EB, Bhattacharyya P, Huang X, Lin J, Chen J, Lowe MJ, Malone DA, Machado AG. Functional Magnetic Resonance Imaging Correlates of Ventral Striatal Deep Brain Stimulation for Poststroke Pain. Neuromodulation 2020; 24:259-264. [PMID: 32744789 DOI: 10.1111/ner.13247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/12/2020] [Accepted: 06/23/2020] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Deep brain stimulation (DBS) for pain has largely been implemented in an uncontrolled manner to target the somatosensory component of pain, with research leading to mixed results. We have previously shown that patients with poststroke pain syndrome who were treated with DBS targeting the ventral striatum/anterior limb of the internal capsule (VS/ALIC) demonstrated a significant improvement in measures related to the affective sphere of pain. In this study, we sought to determine how DBS targeting the VS/ALIC modifies brain activation in response to pain. MATERIALS AND METHODS Five patients with poststroke pain syndrome who were blinded to DBS status (ON/OFF) and six age- and sex-matched healthy controls underwent functional magnetic resonance imaging (fMRI) measuring blood oxygen level-dependent activation in a block design. In this design, each participant received heat stimuli to the affected or unaffected wrist area. Statistical comparisons were performed using fMRI z-maps. RESULTS In response to pain, patients in the DBS OFF state showed significant activation (p < 0.001) in the same regions as healthy controls (thalamus, insula, and operculum) and in additional regions (orbitofrontal and superior convexity cortical areas). DBS significantly reduced activation of these additional regions and introduced foci of significant inhibitory activation (p < 0.001) in the hippocampi when painful stimulation was applied to the affected side. CONCLUSIONS These findings suggest that DBS of the VS/ALIC modulates affective neural networks.
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Affiliation(s)
- Stephen E Jones
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Scott F Lempka
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Raghavan Gopalakrishnan
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Kenneth B Baker
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Erik B Beall
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | | | - Xuemei Huang
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jian Lin
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jacqueline Chen
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Mark J Lowe
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Donald A Malone
- Department of Psychiatry, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Andre G Machado
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Neurosurgery, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
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4
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Gopalakrishnan R, Burgess RC, Malone DA, Lempka SF, Gale JT, Floden DP, Baker KB, Machado AG. Deep brain stimulation of the ventral striatal area for poststroke pain syndrome: a magnetoencephalography study. J Neurophysiol 2018; 119:2118-2128. [PMID: 29384450 DOI: 10.1152/jn.00830.2017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Poststroke pain syndrome (PSPS) is an often intractable disorder characterized by hemiparesis associated with unrelenting chronic pain. Although traditional analgesics have largely failed, integrative approaches targeting affective-cognitive spheres have started to show promise. Recently, we demonstrated that deep brain stimulation (DBS) of the ventral striatal area significantly improved the affective sphere of pain in patients with PSPS. In the present study, we examined whether electrophysiological correlates of pain anticipation were modulated by DBS that could serve as signatures of treatment effects. We recorded event-related fields (ERFs) of pain anticipation using magnetoencephalography (MEG) in 10 patients with PSPS preoperatively and postoperatively in DBS OFF and ON states. Simple visual cues evoked anticipation as patients awaited a painful (PS) or nonpainful stimulus (NPS) to the nonaffected or affected extremity. Preoperatively, ERFs showed no difference between PS and NPS anticipation to the affected extremity, possibly due to loss of salience in a network saturated by pain experience. DBS significantly modulated the early N1, consistent with improvements in affective networks involving restoration of salience and discrimination capacity. Additionally, DBS suppressed the posterior P2 (aberrant anticipatory anxiety) while enhancing the anterior N1 (cognitive and emotional regulation) in responders. DBS-induced changes in ERFs could potentially serve as signatures for clinical outcomes. NEW & NOTEWORTHY We examined the electrophysiological correlates of pain affect in poststroke pain patients who underwent deep brain stimulation (DBS) targeting the ventral striatal area under a randomized, controlled trial. DBS significantly modulated early event-related components, particularly N1 and P2, measured with magnetoencephalography during a pain anticipatory task, compared with baseline and the DBS-OFF condition, pointing to possible mechanisms of action. DBS-induced changes in event-related fields could potentially serve as biomarkers for clinical outcomes.
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Affiliation(s)
- Raghavan Gopalakrishnan
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic , Cleveland, Ohio
| | - Richard C Burgess
- Epilepsy Center, Neurological Institute, Cleveland Clinic , Cleveland, Ohio
| | - Donald A Malone
- Center for Behavioral Health, Neurological Institute, Cleveland Clinic , Cleveland, Ohio
| | - Scott F Lempka
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic , Cleveland, Ohio.,Research Service, Louis Stokes Cleveland Veterans Affairs Medical Center , Cleveland, Ohio
| | - John T Gale
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic , Cleveland, Ohio.,Department of Neuroscience, Lerner Research Institute, Cleveland Clinic , Cleveland, Ohio
| | - Darlene P Floden
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic , Cleveland, Ohio
| | - Kenneth B Baker
- Department of Neuroscience, Lerner Research Institute, Cleveland Clinic , Cleveland, Ohio
| | - Andre G Machado
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic , Cleveland, Ohio.,Department of Neurosurgery, Neurological Institute, Cleveland Clinic , Cleveland, Ohio
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Ganglberger F, Kaczanowska J, Penninger JM, Hess A, Bühler K, Haubensak W. Predicting functional neuroanatomical maps from fusing brain networks with genetic information. Neuroimage 2017; 170:113-120. [PMID: 28877513 DOI: 10.1016/j.neuroimage.2017.08.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 08/21/2017] [Accepted: 08/24/2017] [Indexed: 02/07/2023] Open
Abstract
Functional neuroanatomical maps provide a mesoscale reference framework for studies from molecular to systems neuroscience and psychiatry. The underlying structure-function relationships are typically derived from functional manipulations or imaging approaches. Although highly informative, these are experimentally costly. The increasing amount of publicly available brain and genetic data offers a rich source that could be mined to address this problem computationally. Here, we developed an algorithm that fuses gene expression and connectivity data with functional genetic meta data and exploits cumulative effects to derive neuroanatomical maps related to multi-genic functions. We validated the approach by using public available mouse and human data. The generated neuroanatomical maps recapture known functional anatomical annotations from literature and functional MRI data. When applied to multi-genic meta data from mouse quantitative trait loci (QTL) studies and human neuropsychiatric databases, this method predicted known functional maps underlying behavioral or psychiatric traits. Taken together, genetically weighted connectivity analysis (GWCA) allows for high throughput functional exploration of brain anatomy in silico. It maps functional genetic associations onto brain circuitry for refining functional neuroanatomy, or identifying trait-associated brain circuitry, from genetic data.
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Affiliation(s)
| | - Joanna Kaczanowska
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, 1030, Vienna, Austria
| | - Josef M Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA), Vienna Biocenter (VBC), 1030, Vienna, Austria
| | - Andreas Hess
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander University Erlangen-Nuremberg, Fahrstrasse 17, 91054, Erlangen, Germany
| | - Katja Bühler
- VRVis Research Center, Donau-City Strasse 11, 1220, Vienna, Austria.
| | - Wulf Haubensak
- Research Institute of Molecular Pathology (IMP), Vienna Biocenter (VBC), Campus-Vienna-Biocenter 1, 1030, Vienna, Austria.
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Gopalakrishnan R, Burgess RC, Lempka SF, Gale JT, Floden DP, Machado AG. Pain anticipatory phenomena in patients with central poststroke pain: a magnetoencephalography study. J Neurophysiol 2016; 116:1387-95. [PMID: 27358316 DOI: 10.1152/jn.00215.2016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 06/24/2016] [Indexed: 11/22/2022] Open
Abstract
Central poststroke pain (CPSP) is characterized by hemianesthesia associated with unrelenting chronic pain. The final pain experience stems from interactions between sensory, affective, and cognitive components of chronic pain. Hence, managing CPSP will require integrated approaches aimed not only at the sensory but also the affective-cognitive spheres. A better understanding of the brain's processing of pain anticipation is critical for the development of novel therapeutic approaches that target affective-cognitive networks and alleviate pain-related disability. We used magnetoencephalography (MEG) to characterize the neural substrates of pain anticipation in patients suffering from intractable CPSP. Simple visual cues evoked anticipation while patients awaited impending painful (PS), nonpainful (NPS), or no stimulus (NOS) to their nonaffected and affected extremities. MEG responses were studied at gradiometer level using event-related fields analysis and time-frequency oscillatory analysis upon source localization. On the nonaffected side, significantly greater responses were recorded during PS. PS (vs. NPS and NOS) exhibited significant parietal and frontal cortical activations in the beta and gamma bands, respectively, whereas NPS (vs. NOS) displayed greater activation in the orbitofrontal cortex. On the affected extremity, PS (vs. NPS) did not show significantly greater responses. These data suggest that anticipatory phenomena can modulate neural activity when painful stimuli are applied to the nonaffected extremity but not the affected extremity in CPSP patients. This dichotomy may stem from the chronic effects of pain on neural networks leading to habituation or saturation. Future clinically effective therapies will likely be associated with partial normalization of the neurophysiological correlates of pain anticipation.
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Affiliation(s)
- Raghavan Gopalakrishnan
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, Ohio
| | - Richard C Burgess
- Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio
| | - Scott F Lempka
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; Research Service, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, Ohio; and
| | - John T Gale
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; Department of Neuroscience, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Darlene P Floden
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, Ohio
| | - Andre G Machado
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, Ohio; Department of Neuroscience, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
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7
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Gopalakrishnan R, Burgess RC, Plow EB, Floden DP, Machado AG. Early event related fields during visually evoked pain anticipation. Clin Neurophysiol 2015; 127:1855-63. [PMID: 26733321 DOI: 10.1016/j.clinph.2015.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/02/2015] [Accepted: 11/25/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Pain experience is not only a function of somatosensory inputs. Rather, it is strongly influenced by cognitive and affective pathways. Pain anticipatory phenomena, an important limitation to rehabilitative efforts in the chronic state, are processed by associative and limbic networks, along with primary sensory cortices. Characterization of neurophysiological correlates of pain anticipation, particularly during very early stages of neural processing is critical for development of therapeutic interventions. METHODS Here, we utilized magnetoencephalography to study early event-related fields (ERFs) in healthy subjects exposed to a 3 s visual countdown task that preceded a painful stimulus, a non-painful stimulus or no stimulus. RESULTS We found that the first countdown cue, but not the last cue, evoked critical ERFs signaling anticipation, attention and alertness to the noxious stimuli. Further, we found that P2 and N2 components were significantly different in response to first-cues that signaled incoming painful stimuli when compared to non-painful or no stimuli. CONCLUSIONS The findings indicate that early ERFs are relevant neural substrates of pain anticipatory phenomena and could be potentially serve as biomarkers. SIGNIFICANCE These measures could assist in the development of neurostimulation approaches aimed at curbing the negative effects of pain anticipation during rehabilitation.
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Affiliation(s)
- Raghavan Gopalakrishnan
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Richard C Burgess
- Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Ela B Plow
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Darlene P Floden
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Andre G Machado
- Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
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