View source for Electromagnetic theories of consciousness

{{Short description|Theories proposing consciousness as an electromagnetic phenomenon}}

{{Use dmy dates|date=November 2020}}

'''Electromagnetic theories of consciousness''' propose that [[consciousness]] can be understood as an [[electromagnetic phenomenon]].

== Overview ==
Theorists differ in how they relate consciousness to [[electromagnetism]]. Electromagnetic ''field'' theories (or "EM field theories") of consciousness propose that consciousness results when a [[brain]] produces an [[electromagnetic field]] with specific characteristics. Susan Pockett<ref name="Susan Pockett">{{cite book|author=Susan Pockett|title=The Nature of Consciousness|isbn=978-0-595-12215-8|date=September 2000}}</ref><ref>{{cite journal|last1=Pockett|first1=Susan|title=The electromagnetic field theory of consciousness: a testable hypothesis about the characteristics of conscious as opposed to non-conscious fields|journal=Journal of Consciousness Studies|date=2012|volume=19|issue=11–12|pages=191–223}}</ref> and [[Johnjoe McFadden]]<ref>{{cite journal|author=Johnjoe McFadden|title=The Conscious Electromagnetic Information (Cemi) Field Theory: The Hard Problem Made Easy?|journal=[[Journal of Consciousness Studies]]|volume=9|issue=8|year=2002|pages=45–60|url=http://philpapers.org/rec/MCFTCE}}<br />- {{cite journal|author=Johnjoe McFadden|title=Synchronous Firing and Its Influence on the Brain's Electromagnetic Field: Evidence for an Electromagnetic Field Theory of Consciousness|journal=[[Journal of Consciousness Studies]]|volume=9|issue=4|year=2002|pages=23–50|url=http://philpapers.org/rec/MCFSFA}}<br />- {{cite book|title=The Emerging Physics of Consciousness|chapter=12. The CEMI Field Theory: Seven Clues to the Nature of Consciousness|author=Johnjoe McFadden|editor=Jack A. Tuszynski|publisher=Springer|location=Berlin|year=2006|pages=385–404|chapter-url=http://philpapers.org/rec/MCFTCF-3|isbn=978-3-540-23890-4}}</ref> have proposed EM field theories; [[William Uttal]]<ref>{{cite book|author=William R. Uttal|title=Neural Theories of Mind: Why the Mind-Brain Problem May Never Be Solved|isbn=978-0-8058-5484-8|year=2005}}</ref> has criticized McFadden's and other field theories.

In general, [[quantum mind]] theories do not treat consciousness as an electromagnetic phenomenon, with a few exceptions.<ref>{{cite book|author1=Mari Jibu|author2=Kunio Yasue|title=Quantum brain dynamics and consciousness|isbn=978-1-55619-183-1|year=1995}}</ref><ref>{{cite book|author=Giuseppe Vitiello|title=My Double Unveiled|isbn=978-1-58811-076-3|year=2001}}</ref> 

AR Liboff has proposed that "incorporating EM field-mediated communication into models of brain function has the potential to reframe discussions surrounding consciousness".<ref name=Liboff>{{cite journal|last1 = Liboff|first1 = A R|year = 2016|title = Magnetic correlates in electromagnetic consciousness.|journal = Electromagnetic Biology and Medicine|quote = There is no question that incorporating EM field-mediated communication into models of brain function has the potential to reframe discussions surrounding consciousness. However, to the best of our knowledge, all previous discussions concerning this possibility only focused on traditional electrophysiological parameters, with no recognition of the role likely played by the magnetic field.|doi = 10.3109/15368378.2015.1057641|pmid = 27049696|pages = 228–36|issue = 3|volume = 35|s2cid = 32635627}}</ref>

Also related are E. Roy John's work and Andrew and Alexander Fingelkurts theory "Operational Architectonics framework of brain-mind functioning".<ref>Sources for Fingelkurts:
* Andrew A. Fingelkurts and Alexander A. Fingelkurts, [http://www.bm-science.com/team/chapt3.pdf Mapping of the Brain Operational Architectonics], published in: Chen, F. J. (ed.) Focus on Brain Mapping Research, Nova Science Publishers, 2005 pp. 59-98
* {{cite journal|vauthors=Fingelkurts A, Fingelkurts A|year = 2001|title = Operational architectonics of the human brain biopotential field: Towards solving the mind-brain problem|url = http://www.bm-science.com/team/art18.pdf|journal = Brain and Mind|volume = 2|issue = 3|pages = 261–296|doi = 10.1023/a:1014427822738|s2cid = 16125062}}
* {{cite journal|author1 = Fingelkurts Andrew A.|author2 = Fingelkurts Alexander A.|year = 2004|title = Making complexity simpler: Multivariability and metastability in the brain|url = http://www.bm-science.com/team/art30.pdf|journal = International Journal of Neuroscience|volume = 114|issue = 7|pages = 843–862|doi = 10.1080/00207450490450046|pmid = 15204050|s2cid = 11376883|access-date = 2009-06-22|archive-url = https://web.archive.org/web/20070927073225/http://www.bm-science.com/team/art30.pdf|archive-date = 2007-09-27|url-status = dead}}
* {{cite journal|author1 = Fingelkurts Andrew A.|author2 = Fingelkurts Alexander A.|year = 2006|title = Timing in cognition and EEG brain dynamics: discreteness versus continuity|url = http://www.bm-science.com/team/art39.pdf|journal = Cognitive Processing|volume = 7|issue = 3|pages = 135–162|doi = 10.1007/s10339-006-0035-0|pmid = 16832687|s2cid = 2228893}}
* {{cite journal|author1 = Fingelkurts Andrew A.|author2 = Fingelkurts Alexander A.|author3 = Neves Carlos F.H.|year = 2009|title = Phenomenological architecture of a mind and Operational Architectonics of the brain: the unified metastable continuum|url = http://www.bm-science.com/team/art53.pdf|journal = Journal of New Mathematics and Natural Computing|volume = 5|issue = 1|pages = 221–244|doi = 10.1142/s1793005709001258}}</ref>

== Cemi theory ==
The starting point for McFadden and Pockett's theory is the fact that every time a [[neuron]] fires to generate an [[action potential]], and a [[postsynaptic potential]] in the next neuron down the line, it also generates a disturbance in the surrounding [[electromagnetic field]]. McFadden has proposed that the brain's electromagnetic field creates a representation of the information in the neurons. Studies undertaken towards the end of the 20th century are argued to have shown that conscious experience correlates not with the number of neurons firing, but with the synchrony of that firing.<ref>{{cite journal|author=Fries, P.|display-authors=etal|title=Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry|journal=[[PNAS]]|volume=94|issue=23|year=1997|pages=2699–2704|pmid = 9356513|pmc = 25091|doi=10.1073/pnas.94.23.12699|bibcode = 1997PNAS...9412699F|doi-access=free}}</ref> McFadden views the brain's electromagnetic field as arising from the induced EM field of neurons. The synchronous firing of neurons is, in this theory, argued to amplify the influence of the brain's EM field fluctuations to a much greater extent than would be possible with the unsynchronized firing of neurons.

McFadden thinks that the EM field could influence the brain in a number of ways. Redistribution of ions could modulate neuronal activity, given that [[voltage-gated ion channel]]s are a key element in the progress of [[axon]] spikes. Neuronal firing is argued to be sensitive to the variation of as little as one millivolt across the cell membrane, or the involvement of a single extra ion channel. [[Transcranial magnetic stimulation]] is similarly argued to have demonstrated that weak EM fields can influence brain activity.{{Citation needed|date=November 2011}}

McFadden proposes that the digital information from neurons is integrated to form a conscious electromagnetic information (cemi) field in the brain. [[Consciousness]] is suggested to be the component of this field that is transmitted back to neurons, and communicates its state externally. Thoughts are viewed as electromagnetic representations of neuronal information, and the experience of [[free will]] in our choice of actions is argued to be our [[subjective experience]] of the cemi field acting on our neurons.

McFadden's view of free will is deterministic. Neurons generate patterns in the EM field, which in turn modulate the firing of particular neurons. There is only conscious agency in the sense that the field or its download to neurons is conscious, but the processes of the brain themselves are driven by deterministic electromagnetic interactions. The feel of subjective experience or qualia corresponds to a particular configuration of the cemi field. This field representation is in this theory argued to integrate parts into a whole that has meaning, so a face is not seen as a random collection of features, but as somebody's face. The integration of information in the field is also suggested to resolve the [[Binding problem#The combination problem|binding/combination problem]].

In 2013, McFadden published two updates to the theory. In the first, 'The CEMI Field Theory: Closing the Loop'<ref>{{cite journal|author=McFadden, J.|title= The CEMI Field Theory Closing the Loop|journal=[[Journal of Consciousness Studies]]|volume=20|year=2013|pages=153–168|url= http://epubs.surrey.ac.uk/763034/1/mcfadden_JCS_2013%28a%29.pdf}}</ref> McFadden cites recent experiments in the laboratories of Christof Koch<ref>{{cite journal|author=Anastassiou, C.A.|display-authors=etal|title= Ephaptic coupling of cortical neurons|journal=[[Nature Neuroscience]]|volume=14|year=2011|pages=217–23|doi=10.1038/nn.2727|pmid=21240273|issue=2|s2cid=7836328}}</ref>  and David McCormick<ref>{{cite journal|author1=Frohlich, F.|author2=McCormick, D.A.|title= Endogenous electric fields may guide neocortical network activity|journal=[[Neuron (journal)|Neuron]]|volume=67|issue=1|year=2013|pages=129–143|doi=10.1016/j.neuron.2010.06.005|pmid=20624597|pmc=3139922}}</ref>  which demonstrate that external EM fields, that simulate the brain's endogenous EM fields, influence neuronal firing patterns within brain slices. The findings are consistent with a prediction of the cemi field theory that the brain's endogenous EM field - consciousness - influences brain function. In the second, 'The CEMI Field Theory Gestalt Information and the Meaning of Meaning',<ref>{{cite journal|author=McFadden, J.|title=The CEMI Field Theory Gestalt Information and the Meaning of Meaning|journal=[[Journal of Consciousness Studies]]|volume=20|year=2013|pages=153–168|url=http://machineslikeus.com/sites/default/files/mcfadden_JCS_2013%28b%29.pdf|access-date=22 December 2014|archive-url=https://web.archive.org/web/20160507164232/http://machineslikeus.com/sites/default/files/mcfadden_JCS_2013%28b%29.pdf|archive-date=7 May 2016|url-status=dead}}</ref> McFadden claims that the cemi field theory provides a solution to the binding problem of how complex information is unified within ideas to provide meaning: the brain's EM field unifies the information encoded in millions of disparate neurons.

Susan Pockett<ref name="Susan Pockett"/> has advanced a theory, which has a similar physical basis to McFadden's, with consciousness seen as identical to certain [[spatiotemporal patterns]] of the EM field. However, whereas McFadden argues that his deterministic interpretation of the EM field is not out-of-line with mainstream thinking, Pockett suggests that the EM field comprises a universal consciousness that experiences the sensations, perceptions, thoughts and emotions of every conscious being in the universe. However, while McFadden thinks that the field is causal for actions, albeit deterministically, Pockett does not see the field as causal for our actions.

== Quantum brain dynamics ==
{{Main|Quantum brain dynamics}}

The concepts underlying this theory derive from the physicists, [[Hiroomi Umezawa]]<ref>{{cite book|author=Hiroomi Umezawa|title=Advanced Field Theory: Micro, Macro and Thermal Physics (1993)|publisher=American Institute of Physics}}</ref> and [[Herbert Fröhlich]]<ref>{{cite journal|doi=10.1002/qua.560020505|author=Herbert Frohlich|title=Long-range coherence and energy storage in biological systems|journal=[[International Journal of Quantum Chemistry]]|volume=2|issue=5|year=1968|pages=641–649|bibcode = 1968IJQC....2..641F}}</ref> in the 1960s. More recently, their ideas have been elaborated by Mari Jibu and Kunio Yasue. Water comprises 70% of the brain, and [[quantum brain dynamics]] (QBD) proposes that the electric dipoles of the water molecules constitute a quantum field, referred to as the cortical field, with corticons as the quanta of the field. This cortical field is postulated to interact with quantum coherent waves generated by the biomolecules in neurons, which are suggested to propagate along the neuronal network. The idea of quantum coherent waves in the neuronal network derives from Fröhlich. He viewed these waves as a means by which order could be maintained in living systems, and argued that the neuronal network could support long-range correlation of dipoles. This theory suggests that the cortical field not only interacts with the neuronal network, but also to a good extent controls it.

The proponents of QBD differ somewhat as to the way in which consciousness arises in this system. Jibu and Yasue suggest that the interaction between the energy quanta (corticons) of the quantum field and the biomolecular waves of the neuronal network produces consciousness. However, another theorist, Giuseppe Vitiello, proposes that the quantum states produce two poles, a subjective representation of the external world and also the internal self.{{citation needed|date=December 2014}}

== Objections ==
In a circa-2002 publication of [[Journal of Consciousness Studies|The Journal of Consciousness Studies]], the electromagnetic theory of consciousness faced an uphill battle for acceptance among cognitive scientists.

"No serious researcher I know believes in an electromagnetic theory of consciousness",<ref name=wireless>{{cite magazine|url=https://www.wired.com/science/discoveries/news/2002/05/52674|magazine=Wired|title=Consciousness Based on Wireless?|date=21 May 2002|url-status=dead|archive-url=https://web.archive.org/web/20110629034618/http://www.wired.com/science/discoveries/news/2002/05/52674|archive-date=29 June 2011}}</ref> [[Bernard Baars]] wrote in an e-mail.{{Better source needed|date=December 2015}} Baars is a neurobiologist and co-editor of ''Consciousness and Cognition'', another scientific journal in the field. "It's not really worth talking about scientifically",<ref name = wireless /> he was quoted as saying.

McFadden acknowledges that his theory, which he calls the "cemi field theory", is far from proven but he argues that it is certainly a legitimate line of scientific inquiry. His article underwent peer review before publication. In fact, Baars is on the editorial board of the journal that published it.

The field theories of consciousness do not appear to have been as widely discussed as other quantum consciousness theories, such as those of [[Roger penrose|Penrose]], [[Henry Stapp|Stapp]] or [[David Bohm|Bohm]].<ref>{{cite journal|title= Consciousness, biology and quantum hypotheses|date=14 May 2014|pmid=22925839|doi=10.1016/j.plrev.2012.07.001|volume=9|issue=3|journal=Phys Life Rev|pages=285–94|bibcode = 2012PhLRv...9..285B|vauthors=Baars BJ, Edelman DB}}<br />- {{cite journal|title=Near death experiences: a multidisciplinary hypothesis|date=11 September 2013|pmc=3769617|pmid=24062655|doi=10.3389/fnhum.2013.00533|volume=7|journal=Front Hum Neurosci|pages=533|vauthors=Bókkon I, Mallick BN, Tuszynski JA|doi-access=free}}<br />- {{cite journal|title=Consciousness, the brain, and spacetime geometry|date=14 May 2014|pmid=11349432|doi=10.1111/j.1749-6632.2001.tb05709.x|volume=929|journal=Ann. N. Y. Acad. Sci.|pages=74–104|author=Hameroff S|issue=1|bibcode=2001NYASA.929...74H|citeseerx=10.1.1.405.2988|s2cid=12399940}}</ref> However, [[David Chalmers]]<ref>{{cite book|author=David Chalmers|title=The Conscious Mind: In Search of a Fundamental Theory|isbn=978-0-19-510553-7|url-access=registration|url=https://archive.org/details/consciousmindins00chal|publisher=Oxford University Press|year=1996}}</ref> argues against quantum consciousness. He instead discusses how [[quantum mechanics]] may relate to [[Mind–body dualism|dualistic consciousness]].<ref name="Chalmers2003">{{cite book|author1=Stephen P. Stich|author2=Ted A. Warfield|title=The Blackwell Guide to Philosophy of Mind|url=https://books.google.com/books?id=NEGK_ZStddkC&q=dualistic+consciousness&pg=PA126|date=15 April 2008|work=Blackwell Philosophy Guides|publisher=John Wiley & Sons|page=126|isbn=9780470998755}}</ref> Chalmers is skeptical that any new physics can resolve the [[hard problem of consciousness]].<ref name="Chalmers1995">{{cite journal|author =  David J. Chalmers|author-link=David Chalmers|title = Facing Up to the Problem of Consciousness|journal = Journal of Consciousness Studies|volume = 2|issue = 3|year = 1995|pages = 200–219|url = http://consc.net/papers/facing.html}}</ref><ref name="Chalmers1997">{{cite book|last1=Chalmers|first1=David J.|title=The Conscious Mind: In Search of a Fundamental Theory|date=1997|publisher=Oxford University Press|location=New York|isbn=978-0-19-511789-9|edition=Paperback}}</ref><ref>{{cite book|author=David Chalmers|title=The Conscious Mind: In Search of a Fundamental Theory|isbn=978-0-19-510553-7|url-access=registration|url=https://archive.org/details/consciousmindins00chal|publisher=Oxford University Press|year=1996}}</ref> He argues that quantum theories of consciousness suffer from the same weakness as more conventional theories. Just as he argues that there is no particular reason why particular macroscopic physical features in the brain should give rise to consciousness, he also thinks that there is no particular reason why a particular quantum feature, such as the EM field in the brain, should give rise to consciousness either.<ref>{{cite book|author=David Chalmers|title=The Conscious Mind: In Search of a Fundamental Theory|isbn=978-0-19-510553-7|url-access=registration|url=https://archive.org/details/consciousmindins00chal|publisher=Oxford University Press|year=1996}}</ref> Despite the existence of [[transcranial magnetic stimulation]] with medical purposes, Y. H. Sohn, A. Kaelin-Lang and M. Hallett have denied it,<ref>{{cite journal|doi=10.1136/jnnp.74.7.985|title=The effect of transcranial magnetic stimulation on movement selection|year=2003|last1=Sohn|first1=Y H|journal=Journal of Neurology, Neurosurgery & Psychiatry|volume=74|issue=7|pages=985–7|pmid=12810802|last2=Kaelin-Lang|first2=A|last3=Hallett|first3=M|pmc=1738563}}</ref> and later [[Jeffrey Alan Gray|Jeffrey Gray]] states in his book ''Consciousness: Creeping up on the Hard Problem'', that tests looking for the influence of [[electromagnetic therapy|electromagnetic fields on brain function]] have been [[Electromagnetic hypersensitivity#Causes|universally negative in their result]].{{Dubious|date=December 2015}}<ref>{{Cite book|author= Jeffrey Gray|title=Consciousness: Creeping up on the Hard Problem|year=2004|publisher=[[Oxford University Press]]|isbn=978-0-19-852090-0}}</ref> However, a number of studies have found clear neural effects from EM stimulation.
* Dobson, et al. (2000): 1.8 millitesla = 18,000 mG<ref>{{Cite journal|last1=Dobson|first1=J.|last2=St Pierre|first2=T.|last3=Wieser|first3=H. G.|last4=Fuller|first4=M.|date=February 2000|title=Changes in paroxysmal brainwave patterns of epileptics by weak-field magnetic stimulation|url=https://pubmed.ncbi.nlm.nih.gov/10653619/|journal=Bioelectromagnetics|volume=21|issue=2|pages=94–99|doi=10.1002/(sici)1521-186x(200002)21:2<94::aid-bem3>3.0.co;2-7|issn=0197-8462|pmid=10653619}}</ref>
* Thomas, et al. (2007): 400 microtesla = 4000 milligauss<ref>{{Cite journal|last1=Thomas|first1=Alex W.|last2=Graham|first2=Karissa|last3=Prato|first3=Frank S.|last4=McKay|first4=Julia|last5=Forster|first5=Patricia Morley|last6=Moulin|first6=Dwight E.|last7=Chari|first7=Sesh|date=2007|title=A randomized, double-blind, placebo-controlled clinical trial using a low-frequency magnetic field in the treatment of musculoskeletal chronic pain|journal=Pain Research & Management|volume=12|issue=4|pages=249–258|doi=10.1155/2007/626072|issn=1203-6765|pmc=2670735|pmid=18080043|doi-access=free}}</ref>
* Huesser, et al. (1997): 0.1 millitesla = 1000 mG<ref>{{Cite journal|last1=Heusser|first1=K.|last2=Tellschaft|first2=D.|last3=Thoss|first3=F.|date=1997-12-19|title=Influence of an alternating 3 Hz magnetic field with an induction of 0.1 millitesla on chosen parameters of the human occipital EEG|url=https://pubmed.ncbi.nlm.nih.gov/9469655/|journal=Neuroscience Letters|volume=239|issue=2–3|pages=57–60|doi=10.1016/s0304-3940(97)00881-1|issn=0304-3940|pmid=9469655|s2cid=22753522}}</ref>
*Bell, et al. (2007) 0.78 Gauss = 780 mG<ref name="Bell 389–397">{{Cite journal|last1=Bell|first1=G. B.|last2=Marino|first2=A. A.|last3=Chesson|first3=A. L.|date=December 1992|title=Alterations in brain electrical activity caused by magnetic fields: detecting the detection process|url=https://pubmed.ncbi.nlm.nih.gov/1281085/|journal=Electroencephalography and Clinical Neurophysiology|volume=83|issue=6|pages=389–397|doi=10.1016/0013-4694(92)90075-s|issn=0013-4694|pmid=1281085}}</ref>
* Marino, et al. (2004): 1 Gauss = 1000 mG<ref name="Bell 389–397"/>
* Carrubba, et al. (2008): 1 Gauss = 1000 mG<ref>{{Cite journal|last1=Carrubba|first1=Simona|last2=Frilot|first2=Clifton|last3=Chesson|first3=Andrew L.|last4=Webber|first4=Charles L.|last5=Zbilut|first5=Joseph P.|last6=Marino|first6=Andrew A.|date=January 2008|title=Magnetosensory evoked potentials: consistent nonlinear phenomena|url=https://pubmed.ncbi.nlm.nih.gov/18036693/|journal=Neuroscience Research|volume=60|issue=1|pages=95–105|doi=10.1016/j.neures.2007.10.001|issn=0168-0102|pmid=18036693|s2cid=4848049}}</ref> 
* Jacobson (1994): 5 picotesla = 0.00005 mG<ref>{{Cite journal|last=Jacobson|first=J. I.|date=December 1994|title=Pineal-hypothalamic tract mediation of picotesla magnetic fields in the treatment of neurological disorders|url=https://pubmed.ncbi.nlm.nih.gov/7603740/|journal=Panminerva Medica|volume=36|issue=4|pages=201–205|issn=0031-0808|pmid=7603740}}</ref> 
* Sandyk (1999): Picotesla range<ref>{{Cite journal|last=Sandyk|first=R.|date=April 1999|title=Treatment with AC pulsed electromagnetic fields improves olfactory function in Parkinson's disease|url=https://pubmed.ncbi.nlm.nih.gov/10372649/|journal=The International Journal of Neuroscience|volume=97|issue=3–4|pages=225–233|doi=10.3109/00207459909000662|issn=0020-7454|pmid=10372649}}</ref>

In April 2022, the results of two related experiments at the [[University of Alberta]] and [[Princeton University]] were announced at [[The Science of Consciousness]] conference, providing further evidence to support quantum processes operating within microtubules. In a study [[Stuart Hameroff]] was part of, [[Jack Tuszyński]] of the [[University of Alberta]] demonstrated that anesthetics hasten the duration of a process called delayed luminescence, in which microtubules and tubulins {{Nowrap|re-emit}} trapped light. Tuszyński suspects that the phenomenon has a quantum origin, with [[superradiance]] being investigated as one possibility. In the second experiment, [[Gregory D. Scholes]] and Aarat Kalra of [[Princeton University]] used lasers to excite molecules within tubulins, causing a prolonged excitation to diffuse through microtubules further than expected, which did not occur when repeated under anesthesia.<ref>{{cite web|last1=Lewton|first1=Thomas|date=18 April 2022|title=Quantum experiments add weight to a fringe theory of consciousness|url=https://www.newscientist.com/article/2316408-quantum-experiments-add-weight-to-a-fringe-theory-of-consciousness/|url-access=subscription|access-date=23 April 2022|website=[[New Scientist]]}}</ref><ref>{{cite web|last1=Tangermann|first1=Victor|title=Experiment Suggests That Consciousness May Be Rooted in Quantum Physics|url=https://futurism.com/human-consciousness-quantum-physics|website=www.futurism.com|publisher=Camden Media Inc|access-date=24 April 2022}}</ref> However, diffusion results have to be interpreted carefully, since even classical diffusion can be very complex due to the wide range of length scales in the fluid filled extracellular space.<ref>{{cite journal|last1=Nicholson|first1=Charles|title=The Secret World in the Gaps between Brain Cells|journal=Physics Today|date=May 2022|volume=75|issue=5|pages=26–32|doi=10.1063/PT.3.4999|bibcode=2022PhT....75e..26N|s2cid=248620292}}</ref> Nevertheless, [[University of Oxford]] quantum physicist [[Vlatko Vedral]] told that this connection with consciousness is a really long shot.

Also in 2022, a group of Italian physicists conducted several experiments that failed to provide evidence in support of a gravity-related quantum collapse model of consciousness, weakening the possibility of a quantum explanation for consciousness.<ref>{{cite news|title=Collapsing a leading theory for the quantum origin of consciousness|url=https://phys.org/news/2022-06-collapsing-theory-quantum-consciousness.html|work=phys.org|date=13 June 2022}}</ref><ref>{{cite journal|last1=Derakhshani|first1=Maaneli|last2=Diósi|first2=Lajos|last3=Laubenstein|first3=Matthias|last4=Piscicchia|first4=Kristian|last5=Curceanu|first5=Catalina|title=At the crossroad of the search for spontaneous radiation and the Orch OR consciousness theory|journal=Physics of Life Reviews|date=1 September 2022|volume=42|pages=8–14|doi=10.1016/j.plrev.2022.05.004|pmid=35617922|bibcode=2022PhLRv..42....8D|s2cid=248868080}}</ref>

== Advantages ==
Locating [[consciousness]] in the brain's EM field, rather than the [[neurons]], has the advantage of neatly accounting for how information located in millions of neurons scattered through the brain can be unified into a single conscious experience (sometimes called [[binding problem|the binding or combination problem]]): the information is unified in the EM field.{{Citation needed|date=June 2016}} In this way EM field consciousness can be considered to be "joined-up information". This theory accounts for several otherwise puzzling facts, such as the finding that [[attention]] and [[awareness]] tend to be correlated with the synchronous firing of multiple neurons rather than the firing of individual neurons. When neurons fire together, their EM fields generate stronger EM field disturbances;<ref name=Crick_astonishing_hypothesis>{{Cite book|first1 = Francis|last1 = Crick |title = Astonishing hypothesis: The scientific search for the soul|publisher = Simon and Schuster|date = 1995}}</ref> so synchronous neuron firing will tend to have a larger impact on the brain's EM field (and thereby consciousness) than the firing of individual neurons. However their generation by synchronous firing is not the only important characteristic of conscious electromagnetic fields—in Pockett's original theory, spatial pattern is the defining feature of a conscious (as opposed to a non-conscious) field.{{citation needed|date=December 2014}}

==Influence on brain function==
The different EM field theories disagree as to the role of the proposed conscious EM field on brain function. In McFadden's cemi field theory, as well as in Drs Fingelkurts' Brain-Mind Operational Architectonics theory, the brain's global EM field modifies the electric charges across neural membranes, and thereby influences the probability that particular neurons will fire, providing a feed-back loop that drives [[free will]]. However, in the theories of Susan Pockett and E. Roy John, there is no necessary causal link between the conscious EM field and our consciously willed actions.

References to "Mag Lag" also known as the subtle effect on cognitive processes of MRI machine operators who sometimes have to go into the scanner room to check the patients and deal with issues that occur during the scan could suggest a link between magnetic fields and consciousness. Memory loss and delays in information processing have been reported, in some cases several hours after exposure.<ref>{{Cite web|url=http://www.radmagazine.co.uk/ScientificPDFs/August%202009%20-%20Occupational%20hazard.%20Working%20in%20MRI%20and%20the%20potential%20impact%20of%20EU%20PAD%20-%20Ms%20Elizabeth%20Moore.pdf|title=Occupational hazard? Working in MRI and the potential impact of EU PAD (EMF)|access-date=22 January 2014|archive-url=https://web.archive.org/web/20140201192801/http://www.radmagazine.co.uk/ScientificPDFs/August%202009%20-%20Occupational%20hazard.%20Working%20in%20MRI%20and%20the%20potential%20impact%20of%20EU%20PAD%20-%20Ms%20Elizabeth%20Moore.pdf|archive-date=1 February 2014|url-status=dead}}</ref>

One hypothesis is that magnetic fields in the 0.5-9 Tesla range can affect the ion permeability of neural membranes, in fact this could account for a lot of the issues seen as this would affect many different brain functions.

==Implications for artificial intelligence==
If true, the theory has major implications for efforts to design consciousness into [[artificial intelligence]] machines;<ref>Andrew A. Fingelkurts, Alexander A. Fingelkurts, [http://www.bm-science.com/team/art54_in-press.pdf Brain and mind Operational Architectonics and man-made "machine" consciousness. Cognitive Processing (2009) 10(2):105-111.]</ref> current [[microprocessor]] technology is designed to transmit information linearly along electrical channels, and more general electromagnetic effects are seen as a nuisance and [[Damping ratio|damped]] out; if this theory is right, however, this is directly counterproductive to creating an artificially conscious computer, which on some versions of the theory would instead have electromagnetic fields that synchronized its outputs—or in the original version of the theory would have spatially patterned electromagnetic fields.<ref>{{Cite journal|doi = 10.1093/nc/niaa016|title = Integrating information in the brain's EM field: The cemi field theory of consciousness|year = 2020|last1 = McFadden|first1 = Johnjoe|journal = Neuroscience of Consciousness|volume = 2020|issue = 1|pages = niaa016|pmid = 32995043|pmc = 7507405|s2cid = 221971224|doi-access = free}}</ref>

==See also==
* [[Orchestrated objective reduction]]
* [[Quantum mind]]
* [[Simulated reality]]
* [[Quantum neural network]]

==References==
{{Reflist|2}}

==External links==
* [http://www.scholarpedia.org/article/Field_theories_of_consciousness#The_electromagnetic_field_theory_of_consciousness The electromagnetic field theory of consciousness], [[Scholarpedia]]
* [http://www.annalsofian.org/text.asp?2008/11/3/146/42933/ Global workspace model of consciousness and its electromagnetic correlates]
* [https://www.wired.com/news/technology/1,52674-0.html Consciousness Based on Wireless?]
* [http://www.quantum-mind.co.uk Quantum-Mind]

{{Consciousness}}

{{DEFAULTSORT:Electromagnetic Theories Of Consciousness}}

[[Category:Electromagnetism]]
[[Category:Obsolete scientific theories]]