@ARTICLE{Erker2024-df,
  title     = "Neuromodulatory effects of parietal high-definition transcranial
               direct-current stimulation on network-level activity serving
               fluid intelligence",
  author    = "Erker, Tara D and Arif, Yasra and John, Jason A and Embury,
               Christine M and Kress, Kennedy A and Springer, Seth D and
               Okelberry, Hannah J and McDonald, Kellen M and Picci, Giorgia
               and Wiesman, Alex I and Wilson, Tony W",
  abstract  = "Fluid intelligence (Gf) involves rational thinking skills and
               requires the integration of information from different cortical
               regions to resolve novel complex problems. The effects of
               non-invasive brain stimulation on Gf have been studied in
               attempts to improve Gf, but such studies are rare and the few
               existing have reached conflicting conclusions. The
               parieto-frontal integration theory of intelligence (P-FIT)
               postulates that the parietal and frontal lobes play a critical
               role in Gf. To investigate the suggested role of parietal
               cortices, we applied high-definition transcranial direct current
               stimulation (HD-tDCS) to the left and right parietal cortices of
               39 healthy adults (age 19-33 years) for 20 min in three separate
               sessions (left active, right active and sham). After completing
               the stimulation session, the participants completed a logical
               reasoning task based on Raven's Progressive Matrices during
               magnetoencephalography. Significant neural responses at the
               sensor level across all stimulation conditions were imaged using
               a beamformer. Whole-brain, spectrally constrained functional
               connectivity was then computed to examine the network-level
               activity. Behaviourally, we found that participants were
               significantly more accurate following left compared to right
               parietal stimulation. Regarding neural findings, we found
               significant HD-tDCS montage-related effects in brain networks
               thought to be critical for P-FIT, including parieto-occipital,
               fronto-occipital, fronto-parietal and occipito-cerebellar
               connectivity during task performance. In conclusion, our
               findings showed that left parietal stimulation improved abstract
               reasoning abilities relative to right parietal stimulation and
               support both P-FIT and the neural efficiency hypothesis. KEY
               POINTS: Abstract reasoning is a critical component of fluid
               intelligence and is known to be served by multispectral
               oscillatory activity in the fronto-parietal cortices. Recent
               studies have aimed to improve abstract reasoning abilities and
               fluid intelligence overall through behavioural training, but the
               results have been mixed. High-definition transcranial
               direct-current stimulation (HD-tDCS) applied to the parietal
               cortices modulated task performance and neural oscillations
               during abstract reasoning. Left parietal stimulation resulted in
               increased accuracy and decreased functional connectivity between
               occipital regions and frontal, parietal, and cerebellar regions.
               Future studies should investigate whether HD-tDCS alters
               abstract reasoning abilities in those who exhibit declines in
               performance, such as healthy ageing populations.",
  journal   = "J. Physiol.",
  publisher = "Wiley",
  volume    =  602,
  number    =  12,
  pages     = "2917--2930",
  month     =  jun,
  year      =  2024,
  keywords  = "abstract reasoning; connectivity; magnetoencephalography (MEG);
               oscillations",
  copyright = "http://onlinelibrary.wiley.com/termsAndConditions\#vor",
  language  = "en"
}

{"_id":"oN6vLB4WZFJKGueL2","bibbaseid":"erker-arif-john-embury-kress-springer-okelberry-mcdonald-etal-neuromodulatoryeffectsofparietalhighdefinitiontranscranialdirectcurrentstimulationonnetworklevelactivityservingfluidintelligence-2024","author_short":["Erker, T. D","Arif, Y.","John, J. A","Embury, C. M","Kress, K. A","Springer, S. D","Okelberry, H. J","McDonald, K. M","Picci, G.","Wiesman, A. I","Wilson, T. W"],"bibdata":{"bibtype":"article","type":"article","title":"Neuromodulatory effects of parietal high-definition transcranial direct-current stimulation on network-level activity serving fluid intelligence","author":[{"propositions":[],"lastnames":["Erker"],"firstnames":["Tara","D"],"suffixes":[]},{"propositions":[],"lastnames":["Arif"],"firstnames":["Yasra"],"suffixes":[]},{"propositions":[],"lastnames":["John"],"firstnames":["Jason","A"],"suffixes":[]},{"propositions":[],"lastnames":["Embury"],"firstnames":["Christine","M"],"suffixes":[]},{"propositions":[],"lastnames":["Kress"],"firstnames":["Kennedy","A"],"suffixes":[]},{"propositions":[],"lastnames":["Springer"],"firstnames":["Seth","D"],"suffixes":[]},{"propositions":[],"lastnames":["Okelberry"],"firstnames":["Hannah","J"],"suffixes":[]},{"propositions":[],"lastnames":["McDonald"],"firstnames":["Kellen","M"],"suffixes":[]},{"propositions":[],"lastnames":["Picci"],"firstnames":["Giorgia"],"suffixes":[]},{"propositions":[],"lastnames":["Wiesman"],"firstnames":["Alex","I"],"suffixes":[]},{"propositions":[],"lastnames":["Wilson"],"firstnames":["Tony","W"],"suffixes":[]}],"abstract":"Fluid intelligence (Gf) involves rational thinking skills and requires the integration of information from different cortical regions to resolve novel complex problems. The effects of non-invasive brain stimulation on Gf have been studied in attempts to improve Gf, but such studies are rare and the few existing have reached conflicting conclusions. The parieto-frontal integration theory of intelligence (P-FIT) postulates that the parietal and frontal lobes play a critical role in Gf. To investigate the suggested role of parietal cortices, we applied high-definition transcranial direct current stimulation (HD-tDCS) to the left and right parietal cortices of 39 healthy adults (age 19-33 years) for 20 min in three separate sessions (left active, right active and sham). After completing the stimulation session, the participants completed a logical reasoning task based on Raven's Progressive Matrices during magnetoencephalography. Significant neural responses at the sensor level across all stimulation conditions were imaged using a beamformer. Whole-brain, spectrally constrained functional connectivity was then computed to examine the network-level activity. Behaviourally, we found that participants were significantly more accurate following left compared to right parietal stimulation. Regarding neural findings, we found significant HD-tDCS montage-related effects in brain networks thought to be critical for P-FIT, including parieto-occipital, fronto-occipital, fronto-parietal and occipito-cerebellar connectivity during task performance. In conclusion, our findings showed that left parietal stimulation improved abstract reasoning abilities relative to right parietal stimulation and support both P-FIT and the neural efficiency hypothesis. KEY POINTS: Abstract reasoning is a critical component of fluid intelligence and is known to be served by multispectral oscillatory activity in the fronto-parietal cortices. Recent studies have aimed to improve abstract reasoning abilities and fluid intelligence overall through behavioural training, but the results have been mixed. High-definition transcranial direct-current stimulation (HD-tDCS) applied to the parietal cortices modulated task performance and neural oscillations during abstract reasoning. Left parietal stimulation resulted in increased accuracy and decreased functional connectivity between occipital regions and frontal, parietal, and cerebellar regions. Future studies should investigate whether HD-tDCS alters abstract reasoning abilities in those who exhibit declines in performance, such as healthy ageing populations.","journal":"J. Physiol.","publisher":"Wiley","volume":"602","number":"12","pages":"2917–2930","month":"June","year":"2024","keywords":"abstract reasoning; connectivity; magnetoencephalography (MEG); oscillations","copyright":"http://onlinelibrary.wiley.com/termsAndConditions#vor","language":"en","bibtex":"@ARTICLE{Erker2024-df,\n title = \"Neuromodulatory effects of parietal high-definition transcranial\n direct-current stimulation on network-level activity serving\n fluid intelligence\",\n author = \"Erker, Tara D and Arif, Yasra and John, Jason A and Embury,\n Christine M and Kress, Kennedy A and Springer, Seth D and\n Okelberry, Hannah J and McDonald, Kellen M and Picci, Giorgia\n and Wiesman, Alex I and Wilson, Tony W\",\n abstract = \"Fluid intelligence (Gf) involves rational thinking skills and\n requires the integration of information from different cortical\n regions to resolve novel complex problems. The effects of\n non-invasive brain stimulation on Gf have been studied in\n attempts to improve Gf, but such studies are rare and the few\n existing have reached conflicting conclusions. The\n parieto-frontal integration theory of intelligence (P-FIT)\n postulates that the parietal and frontal lobes play a critical\n role in Gf. To investigate the suggested role of parietal\n cortices, we applied high-definition transcranial direct current\n stimulation (HD-tDCS) to the left and right parietal cortices of\n 39 healthy adults (age 19-33 years) for 20 min in three separate\n sessions (left active, right active and sham). After completing\n the stimulation session, the participants completed a logical\n reasoning task based on Raven's Progressive Matrices during\n magnetoencephalography. Significant neural responses at the\n sensor level across all stimulation conditions were imaged using\n a beamformer. Whole-brain, spectrally constrained functional\n connectivity was then computed to examine the network-level\n activity. Behaviourally, we found that participants were\n significantly more accurate following left compared to right\n parietal stimulation. Regarding neural findings, we found\n significant HD-tDCS montage-related effects in brain networks\n thought to be critical for P-FIT, including parieto-occipital,\n fronto-occipital, fronto-parietal and occipito-cerebellar\n connectivity during task performance. In conclusion, our\n findings showed that left parietal stimulation improved abstract\n reasoning abilities relative to right parietal stimulation and\n support both P-FIT and the neural efficiency hypothesis. KEY\n POINTS: Abstract reasoning is a critical component of fluid\n intelligence and is known to be served by multispectral\n oscillatory activity in the fronto-parietal cortices. Recent\n studies have aimed to improve abstract reasoning abilities and\n fluid intelligence overall through behavioural training, but the\n results have been mixed. High-definition transcranial\n direct-current stimulation (HD-tDCS) applied to the parietal\n cortices modulated task performance and neural oscillations\n during abstract reasoning. Left parietal stimulation resulted in\n increased accuracy and decreased functional connectivity between\n occipital regions and frontal, parietal, and cerebellar regions.\n Future studies should investigate whether HD-tDCS alters\n abstract reasoning abilities in those who exhibit declines in\n performance, such as healthy ageing populations.\",\n journal = \"J. Physiol.\",\n publisher = \"Wiley\",\n volume = 602,\n number = 12,\n pages = \"2917--2930\",\n month = jun,\n year = 2024,\n keywords = \"abstract reasoning; connectivity; magnetoencephalography (MEG);\n oscillations\",\n copyright = \"http://onlinelibrary.wiley.com/termsAndConditions\\#vor\",\n language = \"en\"\n}\n\n","author_short":["Erker, T. D","Arif, Y.","John, J. A","Embury, C. M","Kress, K. A","Springer, S. D","Okelberry, H. J","McDonald, K. M","Picci, G.","Wiesman, A. I","Wilson, T. W"],"key":"Erker2024-df","id":"Erker2024-df","bibbaseid":"erker-arif-john-embury-kress-springer-okelberry-mcdonald-etal-neuromodulatoryeffectsofparietalhighdefinitiontranscranialdirectcurrentstimulationonnetworklevelactivityservingfluidintelligence-2024","role":"author","urls":{},"keyword":["abstract reasoning; connectivity; magnetoencephalography (MEG); oscillations"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/network/files/W6vwbf4ertiLCtXrk","dataSources":["Sapepnxx7AJvCQiud","TS9e8yQGWurr5225H","pFRMx3nk2qrTi5kxq"],"keywords":["abstract reasoning; connectivity; magnetoencephalography (meg); oscillations"],"search_terms":["neuromodulatory","effects","parietal","high","definition","transcranial","direct","current","stimulation","network","level","activity","serving","fluid","intelligence","erker","arif","john","embury","kress","springer","okelberry","mcdonald","picci","wiesman","wilson"],"title":"Neuromodulatory effects of parietal high-definition transcranial direct-current stimulation on network-level activity serving fluid intelligence","year":2024}