Shared neural representations and temporal segmentation of political content predict ideological similarity.

Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 101653440 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2375-2548 (Electronic) Linking ISSN: 23752548 NLM ISO Abbreviation: Sci Adv Subsets: MEDLINE

Original Publication: Washington, DC : American Association for the Advancement of Science, [2015]-

Semantics* ; Amygdala*/diagnostic imaging; Humans ; Magnetic Resonance Imaging/methods ; Brain Mapping

Despite receiving the same sensory input, opposing partisans often interpret political content in disparate ways. Jointly analyzing controlled and naturalistic functional magnetic resonance imaging data, we uncover the neurobiological mechanisms explaining how these divergent political viewpoints arise. Individuals who share an ideology have more similar neural representations of political words, experience greater neural synchrony during naturalistic political content, and temporally segment real-world information into the same meaningful units. In the striatum and amygdala, increasing intersubject similarity in neural representations of political concepts during a word reading task predicts enhanced synchronization of blood oxygen level-dependent time courses when viewing real-time, inflammatory political videos, revealing that polarization can arise from differences in the brain's affective valuations of political concepts. Together, this research shows that political ideology is shaped by semantic representations of political concepts processed in an environment free of any polarizing agenda and that these representations bias how real-world political information is construed into a polarized perspective.

Proc Natl Acad Sci U S A. 2018 Sep 11;115(37):9216-9221. (PMID: 30154168)
Neuroimage. 2020 Nov 15;222:117254. (PMID: 32800992)
Neuroimage. 2009 Nov 15;48(3):564-84. (PMID: 19524046)
Ophthalmic Physiol Opt. 2014 Sep;34(5):502-8. (PMID: 24697967)
J Pers Soc Psychol. 2009 May;96(5):1029-46. (PMID: 19379034)
Sci Rep. 2016 Dec 23;6:39589. (PMID: 28008965)
Perspect Psychol Sci. 2015 Mar;10(2):145-58. (PMID: 25910386)
Front Syst Neurosci. 2008 Nov 24;2:4. (PMID: 19104670)
Neuroimage. 2011 Jan 1;54(1):313-27. (PMID: 20656036)
Psychol Sci. 2011 Jan;22(1):80-6. (PMID: 21148459)
Nat Rev Neurosci. 2006 Apr;7(4):268-77. (PMID: 16552413)
Am Psychol. 2022 Apr;77(3):394-408. (PMID: 34060885)
Front Neuroinform. 2011 Aug 22;5:13. (PMID: 21897815)
Ann N Y Acad Sci. 2010 Mar;1191:42-61. (PMID: 20392275)
Neuroimage. 2011 Sep 1;58(1):242-9. (PMID: 21703352)
Neuroimage. 2019 Jan 1;184:161-170. (PMID: 30217543)
Psychol Sci. 2017 Mar;28(3):307-319. (PMID: 28099068)
BMC Med Res Methodol. 2002 Jun 17;2:8. (PMID: 12069695)
Neuron. 2005 Oct 20;48(2):175-87. (PMID: 16242399)
Mol Psychiatry. 2001 Jan;6(1):13-34. (PMID: 11244481)
J Biopharm Stat. 2011 Nov;21(6):1187-205. (PMID: 22023686)
Proc Natl Acad Sci U S A. 2014 Oct 7;111(40):14565-70. (PMID: 25246586)
PLoS Comput Biol. 2017 Apr 24;13(4):e1005508. (PMID: 28437426)
Sci Adv. 2021 Apr 23;7(17):. (PMID: 33893106)
Nat Rev Neurosci. 2014 Aug;15(8):549-62. (PMID: 24986556)
Neuroimage. 2007 Aug 1;37(1):90-101. (PMID: 17560126)
Neuron. 2017 Aug 2;95(3):709-721.e5. (PMID: 28772125)
Sci Rep. 2020 Jun 2;10(1):8931. (PMID: 32488152)
IEEE Trans Med Imaging. 2001 Jan;20(1):45-57. (PMID: 11293691)
Neuroimage. 2002 Jan;15(1):273-89. (PMID: 11771995)
Nat Methods. 2019 Jan;16(1):111-116. (PMID: 30532080)
Cereb Cortex. 2017 Jan 1;27(1):294-309. (PMID: 28077514)
Magn Reson Med. 1990 Jul;15(1):152-7. (PMID: 2374495)
J Neurosci. 2010 Apr 7;30(14):4999-5007. (PMID: 20371820)
Science. 2015 Jun 5;348(6239):1130-2. (PMID: 25953820)
J Neurosci. 2013 Nov 27;33(48):18906-16. (PMID: 24285896)
J Abnorm Psychol. 1954 Jan;49(1):129-34. (PMID: 13128974)
Neuroimage. 2003 Aug;19(4):1835-42. (PMID: 12948738)
J Exp Psychol Gen. 2011 Feb;140(1):14-34. (PMID: 21171803)
Med Image Anal. 2001 Jun;5(2):143-56. (PMID: 11516708)
Front Psychol. 2012 Jul 25;3:245. (PMID: 22848204)
Neuroimage. 2004 Jan;21(1):450-5. (PMID: 14741682)
Neuroimage. 2017 Feb 15;147:825-840. (PMID: 27751943)
Cereb Cortex. 2012 Jul;22(7):1634-47. (PMID: 21914634)
J Cogn Neurosci. 2011 Sep;23(9):2197-210. (PMID: 20946058)
Neuroimage. 2003 Jul;19(3):1233-9. (PMID: 12880848)
J Neurosci. 2014 Apr 30;34(18):6267-72. (PMID: 24790197)
Dev Sci. 2018 Mar;21(2):. (PMID: 28224689)
Proc Natl Acad Sci U S A. 2020 Nov 3;117(44):27731-27739. (PMID: 33082227)
Neuron. 2006 May 18;50(4):531-4. (PMID: 16701204)
Neuroimage. 2014 Jan 1;84:320-41. (PMID: 23994314)
Mem Cognit. 2017 Aug;45(6):940-955. (PMID: 28653273)
Psychol Bull. 2007 Mar;133(2):273-93. (PMID: 17338600)
Philos Trans R Soc Lond B Biol Sci. 2012 Mar 5;367(1589):640-9. (PMID: 22271780)
Neuron. 2019 Jul 17;103(2):186-188. (PMID: 31319048)
IEEE Trans Med Imaging. 2010 Jun;29(6):1310-20. (PMID: 20378467)
Proc Natl Acad Sci U S A. 2021 May 18;118(20):. (PMID: 33986114)
Neuroimage. 2002 Oct;17(2):825-41. (PMID: 12377157)
Nat Hum Behav. 2021 Jan;5(1):28-38. (PMID: 33230283)
Neuroimage. 2009 Oct 15;48(1):63-72. (PMID: 19573611)
Neurosci Biobehav Rev. 2008;32(4):811-30. (PMID: 18316124)
Neurosci Biobehav Rev. 2002 May;26(3):321-52. (PMID: 12034134)
Nat Commun. 2019 Apr 2;10(1):1483. (PMID: 30940815)
Ann N Y Acad Sci. 2007 May;1104:70-88. (PMID: 17344522)
Med Image Anal. 2008 Feb;12(1):26-41. (PMID: 17659998)
Neuroimage. 2013 Jan 1;64:240-56. (PMID: 22926292)
NMR Biomed. 1997 Jun-Aug;10(4-5):171-8. (PMID: 9430344)
Nature. 2019 Sep;573(7772):117-121. (PMID: 31485058)
Neuroimage. 2016 Aug 15;137:188-200. (PMID: 26707889)
Nat Commun. 2020 Oct 5;11(1):5004. (PMID: 33020473)
Behav Res Methods. 2020 Oct;52(5):1906-1928. (PMID: 32077079)
Science. 2020 Oct 30;370(6516):533-536. (PMID: 33122374)
PLoS Comput Biol. 2014 Apr 17;10(4):e1003553. (PMID: 24743308)
J Pers Soc Psychol. 1985 Sep;49(3):577-85. (PMID: 4045697)
Proc Natl Acad Sci U S A. 2009 Dec 1;106(48):20168-73. (PMID: 19934033)
Annu Rev Neurosci. 2000;23:155-84. (PMID: 10845062)
Behav Res Methods. 2017 Oct;49(5):1668-1685. (PMID: 28718087)
AJS. 2008 Jan 28;114(2):408-446. (PMID: 24932012)
Magn Reson Med. 1996 Mar;35(3):346-55. (PMID: 8699946)
Annu Rev Neurosci. 2019 Jul 8;42:407-432. (PMID: 31283895)
Soc Cogn Affect Neurosci. 2010 Jun;5(2-3):349-55. (PMID: 19966327)
Curr Opin Neurobiol. 1996 Apr;6(2):221-7. (PMID: 8725964)

Date Created: 20230201 Date Completed: 20230203 Latest Revision: 20230307

20240829

PMC9891706

10.1126/sciadv.abq5920

36724226