A Novel Magnetic Stimulator Increases Experimental Pain Tolerance in Healthy Volunteers - A Double-Blind Sham-Controlled Crossover Study
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{"title"=>"A Novel Magnetic Stimulator Increases Experimental Pain Tolerance in Healthy Volunteers - A Double-Blind Sham-Controlled Crossover Study", "type"=>"journal", "authors"=>[{"first_name"=>"Rudie", "last_name"=>"Kortekaas", "scopus_author_id"=>"23977851700"}, {"first_name"=>"Lotte E.", "last_name"=>"van Nierop", "scopus_author_id"=>"36702091400"}, {"first_name"=>"Veroni G.", "last_name"=>"Baas", "scopus_author_id"=>"55953625900"}, {"first_name"=>"Karl Heinz", "last_name"=>"Konopka", "scopus_author_id"=>"36573850600"}, {"first_name"=>"Marten", "last_name"=>"Harbers", "scopus_author_id"=>"8602774200"}, {"first_name"=>"Johannes H.", "last_name"=>"van der Hoeven", "scopus_author_id"=>"7103020884"}, {"first_name"=>"Marten", "last_name"=>"van Wijhe", "scopus_author_id"=>"24462833200"}, {"first_name"=>"André", "last_name"=>"Aleman", "scopus_author_id"=>"7006820955"}, {"first_name"=>"Natasha M.", "last_name"=>"Maurits", "scopus_author_id"=>"35497253800"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-84876449823", "doi"=>"10.1371/journal.pone.0061926", "sgr"=>"84876449823", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)", "pmid"=>"23620795", "issn"=>"19326203", "pui"=>"368765594"}, "id"=>"7b5e1a48-b90a-31e4-af94-a9657e5f5636", "abstract"=>"UNLABELLED: The 'complex neural pulse'(TM) (CNP) is a neuromodulation protocol employing weak pulsed electromagnetic fields (PEMF). A pioneering paper reported an analgesic effect in healthy humans after 30 minutes of CNP-stimulation using three nested whole head coils. We aimed to devise and validate a stimulator with a novel design entailing a multitude of small coils at known anatomical positions on a head cap, to improve applicability. The main hypothesis was that CNP delivery with this novel device would also increase heat pain thresholds. Twenty healthy volunteers were enrolled in this double-blind, sham-controlled, crossover study. Thirty minutes of PEMF (CNP) or sham was applied to the head. After one week the other treatment was given. Before and after each treatment, primary and secondary outcomes were measured. Primary outcome was heat pain threshold (HPT) measured with thermal quantitative sensory testing. Other outcomes were warmth detection threshold, and aspects of cognition, emotion and motor performance. As hypothesized heat pain threshold was significantly increased after the PEMF stimulation. All other outcomes were unaltered by the PEMF but there was a trend level reduction of cognitive performance after PEMF stimulation as measured by the digit-symbol substitution task. Results from this pilot study suggest that our device is able to stimulate the brain and to modulate its function. This is in agreement with previous studies that used similar magnetic field strengths to stimulate the brain. Specifically, pain control may be achieved with PEMF and for this analgesic effect, coil design does not appear to play a dominant role. In addition, the flexible configuration with small coils on a head cap improves clinical applicability.\\n\\nTRIAL REGISTRATION: Dutch Cochrane Centre NTR1093.", "link"=>"http://www.mendeley.com/research/novel-magnetic-stimulator-increases-experimental-pain-tolerance-healthy-volunteers-doubleblind-shamc", "reader_count"=>23, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>1, "Student > Doctoral Student"=>3, "Researcher"=>2, "Student > Ph. D. Student"=>8, "Student > Master"=>3, "Other"=>2, "Student > Bachelor"=>2, "Professor"=>2}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>1, "Student > Doctoral Student"=>3, "Researcher"=>2, "Student > Ph. D. Student"=>8, "Student > Master"=>3, "Other"=>2, "Student > Bachelor"=>2, "Professor"=>2}, "reader_count_by_subject_area"=>{"Engineering"=>4, "Unspecified"=>2, "Mathematics"=>1, "Medicine and Dentistry"=>8, "Agricultural and Biological Sciences"=>1, "Neuroscience"=>2, "Psychology"=>4, "Social Sciences"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>4}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>8}, "Neuroscience"=>{"Neuroscience"=>2}, "Social Sciences"=>{"Social Sciences"=>1}, "Psychology"=>{"Psychology"=>4}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Mathematics"=>{"Mathematics"=>1}, "Unspecified"=>{"Unspecified"=>2}}, "reader_count_by_country"=>{"Netherlands"=>2, "Brazil"=>1}, "group_count"=>3}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1029833"], "description"=>"<div><p>The ‘complex neural pulse’<sup>TM</sup> (CNP) is a neuromodulation protocol employing weak pulsed electromagnetic fields (PEMF). A pioneering paper reported an analgesic effect in healthy humans after 30 minutes of CNP-stimulation using three nested whole head coils. We aimed to devise and validate a stimulator with a novel design entailing a multitude of small coils at known anatomical positions on a head cap, to improve applicability. The main hypothesis was that CNP delivery with this novel device would also increase heat pain thresholds. Twenty healthy volunteers were enrolled in this double-blind, sham-controlled, crossover study. Thirty minutes of PEMF (CNP) or sham was applied to the head. After one week the other treatment was given. Before and after each treatment, primary and secondary outcomes were measured. Primary outcome was heat pain threshold (HPT) measured with thermal quantitative sensory testing. Other outcomes were warmth detection threshold, and aspects of cognition, emotion and motor performance. As hypothesized heat pain threshold was significantly increased after the PEMF stimulation. All other outcomes were unaltered by the PEMF but there was a trend level reduction of cognitive performance after PEMF stimulation as measured by the digit-symbol substitution task. Results from this pilot study suggest that our device is able to stimulate the brain and to modulate its function. This is in agreement with previous studies that used similar magnetic field strengths to stimulate the brain. Specifically, pain control may be achieved with PEMF and for this analgesic effect, coil design does not appear to play a dominant role. In addition, the flexible configuration with small coils on a head cap improves clinical applicability.</p><p>Trial Registration</p><p>Dutch Cochrane Centre <a href=\"http://www.trialregister.nl/trialreg/admin/rctview.asp?TC=1093\" target=\"_blank\">NTR1093</a></p></div>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices", "stimulator", "volunteers", "double-blind", "sham-controlled", "crossover"], "article_id"=>686640, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926", "stats"=>{"downloads"=>0, "page_views"=>15, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_A_Novel_Magnetic_Stimulator_Increases_Experimental_Pain_Tolerance_in_Healthy_Volunteers_A_Double_Blind_Sham_Controlled_Crossover_Study_/686640", "title"=>"A Novel Magnetic Stimulator Increases Experimental Pain Tolerance in Healthy Volunteers - A Double-Blind Sham-Controlled Crossover Study", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-04-19 01:50:40"}
  • {"files"=>["https://ndownloader.figshare.com/files/1029823"], "description"=>"<p>The interface card translates digital values into voltages. The amplifier in turn increases power to generate pulsed magnetic fields in nineteen small electromagnets radially attached to the head cap. Photo by S. Martens, consent to publication was obtained from the subject.</p>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices", "overview"], "article_id"=>686630, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926.g001", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Schematic_overview_of_the_hardware_/686630", "title"=>"Schematic overview of the hardware.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-04-19 01:50:30"}
  • {"files"=>["https://ndownloader.figshare.com/files/1029824"], "description"=>"<p>The digital version of the CNP wave as published in the literature<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0061926#pone.0061926-Thomas3\" target=\"_blank\">[22]</a> (A) and used here (B), was converted by PC and interface card to the analogue version (C), which was amplified (D) and converted to a magnetic wave (E), all to the same time scale.</p>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices", "stages", "cnp"], "article_id"=>686631, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926.g002", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Different_stages_of_the_CNP_signal_/686631", "title"=>"Different stages of the CNP signal.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-04-19 01:50:31"}
  • {"files"=>["https://ndownloader.figshare.com/files/1029828"], "description"=>"<p>Frequency characteristics of amplifier, coils and amplifier + coils.</p>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices", "coils", "amplifier"], "article_id"=>686635, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926.g003", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Frequency_characteristics_of_amplifier_coils_and_amplifier_coils_/686635", "title"=>"Frequency characteristics of amplifier, coils and amplifier + coils.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-04-19 01:50:35"}
  • {"files"=>["https://ndownloader.figshare.com/files/1029830"], "description"=>"<p>See text for details.</p>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices", "thermal", "quantitative", "sensory", "detection"], "article_id"=>686637, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926.g004", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Schematic_of_thermal_quantitative_sensory_testing_tQST_method_for_assessing_Warmth_Detection_Threshold_WDT_and_Heat_Pain_Threshold_HPT_/686637", "title"=>"Schematic of thermal quantitative sensory testing (tQST) method for assessing Warmth Detection Threshold (WDT) and Heat Pain Threshold (HPT).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-04-19 01:50:37"}
  • {"files"=>["https://ndownloader.figshare.com/files/1029831"], "description"=>"<p>Warmth detection threshold (WDT) was unaltered by PEMF (p = 0.455) but heat pain threshold (HPT) increased more after PEMF than after sham stimulation. * significantly different at p<0.05.</p>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices", "pemf"], "article_id"=>686638, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926.g005", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Effects_of_PEMF_treatment_on_changes_in_skin_sensitivity_/686638", "title"=>"Effects of PEMF treatment on changes in skin sensitivity.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-04-19 01:50:38"}
  • {"files"=>["https://ndownloader.figshare.com/files/1029832"], "description"=>"<p>Demographic characteristics for each treatment group.</p>", "links"=>[], "tags"=>["neuroscience", "Cognitive neuroscience", "Motor reactions", "Neurochemistry", "Neurochemicals", "dopamine", "neuromodulation", "Behavioral neuroscience", "Neuroethology", "Sensory systems", "anesthesiology", "Pain management", "Drugs and devices", "Medical devices"], "article_id"=>686639, "categories"=>["Medicine", "Biological Sciences"], "users"=>["Rudie Kortekaas", "Lotte E. van Nierop", "Veroni G. Baas", "Karl-Heinz Konopka", "Marten Harbers", "Johannes H. van der Hoeven", "Marten van Wijhe", "André Aleman", "Natasha M. Maurits"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0061926.t001", "stats"=>{"downloads"=>1, "page_views"=>1, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Demographic_characteristics_for_each_treatment_group_/686639", "title"=>"Demographic characteristics for each treatment group.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-04-19 01:50:39"}

PMC Usage Stats | Further Information

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  • {"unique-ip"=>"11", "full-text"=>"12", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"11"}
  • {"unique-ip"=>"14", "full-text"=>"15", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"2"}
  • {"unique-ip"=>"11", "full-text"=>"13", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"3"}
  • {"unique-ip"=>"21", "full-text"=>"25", "pdf"=>"4", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"6", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"4"}
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Relative Metric

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