title: The body in the brain revisited.
abstract: Corporeal awareness is a difficult concept which refers to perception, knowledge and evaluation of one's own body as well as of other bodies. We discuss here some controversies regarding the significance of the concepts of body schema and body image, as variously entertained by different authors, for the understanding of corporeal awareness, and consider some newly proposed alternatives. We describe some recent discoveries of cortical areas specialized for the processing of bodily forms and bodily actions, as revealed by neuroimaging, neurophysiological, and lesion studies. We further describe new empirical and theoretical evidence for the importance of interoception, in addition to exteroception and proprioception, for corporeal awareness, and discuss how itch, a typical interoceptive input, has been wrongly excluded from the classic concept of the proprioceptive-tactile body schema. Finally, we consider the role of the insular cortex as the terminal cortical station of interoception and other bodily signals, along with Craig's proposal that the human insular cortex sets our species apart from other species by supporting consciousness of the body and the self. We conclude that corporeal awareness depends on the spatiotemporally distributed activity of many bodies in the brain, none of which is isomorphic with the actual body.
authors.affiliation: National Institute of Neuroscience-Italy, University of Verona, Verona, Italy. giovanni.berlucchi@univr.it
authors.forename: Giovanni
authors.initials: G
authors.lastname: Berlucchi
authors.forename: Salvatore M
authors.initials: SM
authors.lastname: Aglioti
mesh_terms: D000344:Afferent Pathways / Q000503:physiopathology; D000818:Animals; D001364:Awareness; D001828:Body Image; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology*; D003243:Consciousness / Q000502:physiology*; D006801:Humans; D011537:Pruritus / Q000473:pathology / Q000503:physiopathology; D012649:Self Concept
references.citation: Nat Neurosci. 2007 Jan;10(1):30-1
references.pmid: 17159990
references.citation: J Neurosci. 1997 Jun 1;17(11):4302-11
references.pmid: 9151747
references.citation: Neurosci Lett. 2008 May 9;436(2):128-32
references.pmid: 18395979
references.citation: Cogn Process. 2004 Jun;5(2):94-105
references.pmid: 16467906
references.citation: Cereb Cortex. 2006 Feb;16(2):178-82
references.pmid: 15858162
references.citation: Prosthet Orthot Int. 2008 Sep;32(3):363-82
references.pmid: 18677671
references.citation: Soc Neurosci. 2009;4(2):101-20
references.pmid: 19255912
references.citation: Cogn Neuropsychol. 2008 Jun;25(4):601-29
references.pmid: 18608319
references.citation: Cereb Cortex. 2008 Oct;18(10):2369-73
references.pmid: 18270173
references.citation: Monogr Soc Res Child Dev. 2004;69(2):vii, 1-102
references.pmid: 15317497
references.citation: Soc Cogn Affect Neurosci. 2007 Dec;2(4):274-83
references.pmid: 18985133
references.citation: Conscious Cogn. 2008 Dec;17(4):1317-20; discussion 1321-3
references.pmid: 18722792
references.citation: Behav Brain Sci. 2007 Apr;30(2):189-201; discussion 201-39
references.pmid: 17705910
references.citation: Neuroimage. 2002 Mar;15(3):596-603
references.pmid: 11848702
references.citation: Soc Neurosci. 2009;4(1):40-8
references.pmid: 18633839
references.citation: Neuron. 2008 Oct 23;60(2):235-46
references.pmid: 18957216
references.citation: Curr Biol. 2004 Dec 14;14(23):2130-4
references.pmid: 15589156
references.citation: J Neurosci. 2006 Jul 26;26(30):7942-9
references.pmid: 16870739
references.citation: Nat Rev Neurosci. 2007 Aug;8(8):636-48
references.pmid: 17643089
references.citation: Philos Psychol. 1996 Mar 1;9(2):
references.pmid: 24307757
references.citation: Cortex. 2004 Feb;40(1):19-40
references.pmid: 15070001
references.citation: J Neurophysiol. 2007 Jan;97(1):415-22
references.pmid: 16914620
references.citation: Curr Biol. 2009 Feb 24;19(4):319-24
references.pmid: 19200723
references.citation: Neuroreport. 2004 Oct 25;15(15):2407-10
references.pmid: 15640765
references.citation: J Comp Neurol. 2005 Dec 5;493(1):154-66
references.pmid: 16254997
references.citation: Exp Brain Res. 2009 Jan;192(3):533-51
references.pmid: 18813916
references.citation: J Cogn Neurosci. 2009 Oct;21(10):2027-45
references.pmid: 18823255
references.citation: Neuropsychologia. 2009 Jun;47(7):1745-55
references.pmid: 19397870
references.citation: Neuropsychologia. 2009 Apr;47(5):1256-60
references.pmid: 19428388
references.citation: Neuropsychologia. 2007 Jun 18;45(11):2621-5
references.pmid: 17499819
references.citation: Neuropsychologia. 2008 Feb 12;46(3):915-26
references.pmid: 18281065
references.citation: Nat Neurosci. 2009 May;12(5):547-8
references.pmid: 19363489
references.citation: J Cogn Neurosci. 2000 May;12(3):495-504
references.pmid: 10931774
references.citation: J Neurophysiol. 2005 Jan;93(1):603-8
references.pmid: 15295012
references.citation: J Neurosci. 2005 Nov 23;25(47):11055-9
references.pmid: 16306418
references.citation: Conscious Cogn. 2008 Dec;17(4):1302-16
references.pmid: 18359642
references.citation: Neuropsychologia. 2009 Jul;47(8-9):1909-16
references.pmid: 19428423
references.citation: Neuropsychologia. 2006;44(10):1919-27
references.pmid: 16545844
references.citation: Stroke. 2008 Feb;39(2):486-8
references.pmid: 18162622
references.citation: Trends Cogn Sci. 2004 Feb;8(2):79-86
references.pmid: 15588812
references.citation: Neuron. 2006 Mar 16;49(6):815-22
references.pmid: 16543130
references.citation: Science. 1977 Oct 7;198(4312):75-8
references.pmid: 17741897
references.citation: PLoS Biol. 2008 Aug 19;6(8):e202
references.pmid: 18715117
references.citation: Conscious Cogn. 2005 Dec;14(4):752-70
references.pmid: 16098765
references.citation: Epilepsia. 2009 Mar;50(3):510-20
references.pmid: 18717706
references.citation: Neurosci Biobehav Rev. 2008;32(1):143-60
references.pmid: 17707508
references.citation: Trends Neurosci. 1997 Dec;20(12):560-4
references.pmid: 9416668
references.citation: Soc Neurosci. 2008;3(3-4):388-400
references.pmid: 18979387
references.citation: J Cogn Neurosci. 2005 Apr;17(4):543-53
references.pmid: 15829076
references.citation: Pain Pract. 2005 Jun;5(2):85-94
references.pmid: 17177754
references.citation: Brain Res Brain Res Rev. 2005 Dec 1;50(1):184-99
references.pmid: 16019077
references.citation: Annu Rev Neurosci. 2004;27:169-92
references.pmid: 15217330
references.citation: Cereb Cortex. 2008 Dec;18(12):2879-90
references.pmid: 18424775
references.citation: Neuropsychologia. 2009 May;47(6):1615-20
references.pmid: 19038277
references.citation: Nat Rev Neurosci. 2009 Jan;10(1):59-70
references.pmid: 19096369
references.citation: Trends Cogn Sci. 2009 Jan;13(1):7-13
references.pmid: 19058991
references.citation: Neuroimage. 2009 May 1;45(4):1264-71
references.pmid: 19349239
references.citation: Curr Biol. 2009 Jun 23;19(12):R478-9
references.pmid: 19549491
references.citation: J Neurophysiol. 2007 Sep;98(3):1626-33
references.pmid: 17596425
references.citation: Nat Neurosci. 2004 May;7(5):542-8
references.pmid: 15107859
references.citation: J Neurosci. 2005 Aug 3;25(31):7134-8
references.pmid: 16079395
references.citation: Neuroreport. 1996 Dec 20;8(1):293-6
references.pmid: 9051798
references.citation: Curr Opin Neurobiol. 2001 Apr;11(2):157-63
references.pmid: 11301234
references.citation: Brain Res. 2007 Apr 27;1143:169-82
references.pmid: 17306235
references.citation: Neuroimage. 2007 Jul 1;36(3):1004-14
references.pmid: 17478105
references.citation: Neuroimage. 2008 Oct 1;42(4):1669-77
references.pmid: 18586108
references.citation: Brain Res Rev. 2007 Apr;54(1):219-32
references.pmid: 17500095
references.citation: Neurology. 2002 Aug 13;59(3):357-63
references.pmid: 12177368
references.citation: Brain. 1991 Feb;114 ( Pt 1B):629-42
references.pmid: 2004260
references.citation: Brain. 2007 Dec;130(Pt 12):3075-90
references.pmid: 17533170
references.citation: J Cogn Neurosci. 2010 Jan;22(1):203-11
references.pmid: 19302006
references.citation: Science. 2001 Sep 28;293(5539):2470-3
references.pmid: 11577239
references.citation: Brain. 2009 Jul;132(Pt 7):1693-710
references.pmid: 19506071
references.citation: Arch Neurol. 1983 Sep;40(9):548-51
references.pmid: 6615285
references.citation: Neuroimage. 2009 May 15;46(1):290-8
references.pmid: 19457378