Safety of Transcranial Direct Current Stimulation: Evidence Based Update 2016
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Citações na Scopus
936
Tipo de produção
article
Data de publicação
2016
Editora
ELSEVIER SCIENCE INC
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Título da Revista
ISSN da Revista
Título do Volume
Autores
BIKSON, Marom
GROSSMAN, Pnina
THOMAS, Chris
ZANNOU, Adantchede Louis
JIANG, Jimmy
ADNAN, Tatheer
MOURDOUKOUTAS, Antonios P.
KRONBERG, Greg
TRUONG, Dennis
BOGGIO, Paulo
Autor de Grupo de pesquisa
Editores
Coordenadores
Organizadores
Citação
BRAIN STIMULATION, v.9, n.5, p.641-661, 2016
Resumo
This review updates and consolidates evidence on the safety of transcranial Direct Current Stimulation (tDCS). Safety is here operationally defined by, and limited to, the absence of evidence for a Serious Adverse Effect, the criteria for which are rigorously defined. This review adopts an evidence-based approach, based on an aggregation of experience from human trials, taking care not to confuse speculation on potential hazards or lack of data to refute such speculation with evidence for risk. Safety data from animal tests for tissue damage are reviewed with systematic consideration of translation to humans. Arbitrary safety considerations are avoided. Computational models are used to relate dose to brain exposure in humans and animals. We review relevant dose-response curves and dose metrics (e.g. current, duration, current density, charge, charge density) for meaningful safety standards. Special consideration is given to theoretically vulnerable populations including children and the elderly, subjects with mood disorders, epilepsy, stroke, implants, and home users. Evidence from relevant animal models indicates that brain injury by Direct Current Stimulation (DCS) occurs at predicted brain current densities (6.3-13 A/m(2)) that are over an order of magnitude above those produced by conventional tDCS. To date, the use of conventional tDCS protocols in human trials (<= 40 min, <= 4 milliamperes, <= 7.2 Coulombs) has not produced any reports of a Serious Adverse Effect or irreversible injury across over 33,200 sessions and 1000 subjects with repeated sessions. This includes a wide variety of subjects, including persons from potentially vulnerable populations.
Palavras-chave
Safety, tDCS, Transcranial Direct Current Stimulation, Electrical stimulation, tDCS safety, Mood disorders
Referências
- Andrade C, 2013, J ECT, V29, P239, DOI 10.1097/YCT.0b013e3182843866
- Anton SD, 2015, AGEING RES REV, V24, P304, DOI 10.1016/j.arr.2015.09.005
- Aree-uea Benchaporn, 2014, Journal of the Medical Association of Thailand, V97, P954
- Arul-Anandam AP, 2010, J ECT, V26, P68, DOI 10.1097/YCT.0b013e3181a744bf
- ASTROM M, 1992, STROKE, V23, P527
- Auvichayapat N, 2013, BRAIN STIMUL, V6, P696, DOI 10.1016/j.brs.2013.01.009
- Ayerbe L, 2013, STROKE, V44, P1105, DOI 10.1161/STROKEAHA.111.679340
- Baba T, 2009, STROKE, V40, pE598, DOI 10.1161/STROKEAHA.109.563627
- Baccaro A, 2010, ACTA NEUROPSYCHIATR, V22, P316, DOI 10.1111/j.1601-5215.2010.00495.x
- Batsikadze G, 2013, J PHYSIOL-LONDON, V591, P1987, DOI 10.1113/jphysiol.2012.249730
- Batsikadze G, 2013, NEUROPSYCHOPHARMACOL, V38, P2260, DOI 10.1038/npp.2013.127
- Benninger DH, 2010, J NEUROL NEUROSUR PS, V81, P1105, DOI 10.1136/jnnp.2009.202556
- Benvenuti A, 2008, BIPOLAR DISORD, V10, P726, DOI 10.1111/j.1399-5618.2008.00613.x
- Berryhill ME, 2012, NEUROSCI LETT, V521, P148, DOI 10.1016/j.neulet.2012.05.074
- Bhanpuri NH, 2015, J CHILD NEUROL, V30, P1604, DOI 10.1177/0883073815575369
- Bikson M, 2010, CLIN NEUROPHYSIOL, V121, P1976, DOI 10.1016/j.clinph.2010.05.020
- Bikson M, 2004, J PHYSIOL-LONDON, V557, P175, DOI 10.1113/jphysiol.2003.055772
- Bikson M, 1999, J NEUROPHYSIOL, V82, P2262
- Bikson M, 2009, CLIN NEUROPHYSIOL, V120, P1033, DOI 10.1016/j.clinph.2009.03.018
- Boggio PS, 2009, J NEUROL NEUROSUR PS, V80, P444, DOI 10.1136/jnnp.2007.141853
- Boggio PS, 2006, J NEUROL SCI, V249, P31, DOI 10.1016/j.jns.2006.05.062
- Boggio PS, 2010, EUR J NEUROSCI, V31, P593, DOI 10.1111/j.1460-9568.2010.07080.x
- Boggio PS, 2012, BRAIN STIMUL, V5, P223, DOI 10.1016/j.brs.2011.06.006
- Brunoni AR, 2013, EUR PSYCHIAT, V28, P356, DOI 10.1016/j.eurpsy.2012.09.001
- Brunoni AR, 2013, JAMA PSYCHIAT, V70, P383, DOI 10.1001/2013.jamapsychiatry.32
- Brunoni AR, 2011, J NEUROPSYCH CLIN N, V23, pE4, DOI 10.1176/appi.neuropsych.23.3.E4
- Brunoni AR, 2011, INT J NEUROPSYCHOPH, V14, P1133, DOI 10.1017/S1461145710001690
- Brunoni AR, 2012, BRAIN STIMUL, V5, P175, DOI 10.1016/j.brs.2011.03.002
- Calabrese EJ, 2016, PHARMACOL RES, V110, P242, DOI 10.1016/j.phrs.2015.12.021
- Calabrese EJ, 2016, GERONTOLOGY, V62, P530, DOI 10.1159/000441520
- Chang WJ, 2015, BMJ OPEN, V5, DOI 10.1136/bmjopen-2015-008482
- Charvet LE, 2015, FRONT SYST NEUROSCI, V9, DOI 10.3389/fnsys.2015.00026
- Cho HS, 2015, J PHYS THER SCI, V27, P1045, DOI 10.1589/jpts.27.1045
- Grecco LAC, 2014, J PHYS THER SCI, V26, P945, DOI 10.1589/jpts.26.945
- Grecco LAC, 2014, RES DEV DISABIL, V35, P2840, DOI 10.1016/j.ridd.2014.07.030
- Cosman JD, 2015, COGNITION, V145, P73, DOI 10.1016/j.cognition.2015.08.010
- Cosmo C, 2015, JMIR RES PROTOC, V4, DOI 10.2196/resprot.4138
- Cotelli M, 2014, FRONT AGING NEUROSCI, V6, DOI 10.3389/fnagi.2014.00038
- Cotelli M, 2014, J ALZHEIMERS DIS, V39, P799, DOI 10.3233/JAD-131427
- DaSilva AF, 2011, JOVE-J VIS EXP, DOI [10.3791/2744, DOI 10.3791/2744]
- Datta A, 2009, BRAIN STIMUL, V2, P201, DOI 10.1016/j.brs.2009.03.005
- Datta A, 2010, NEUROIMAGE, V52, P1268, DOI 10.1016/j.neuroimage.2010.04.252
- Datta A, 2011, BRAIN STIMUL, V4, P169, DOI 10.1016/j.brs.2010.11.001
- de Berker AO, 2013, FRONT HUM NEUROSCI, V7, DOI 10.3389/fnhum.2013.00613
- Deng ZD, 2013, BRAIN STIMUL, V6, P1, DOI 10.1016/j.brs.2012.02.005
- Dhamne SC, 2015, Ann Clin Transl Neur, V2, P843, DOI 10.1002/acn3.226
- Di Lazzaro V, 2014, J PHYSIOL-LONDON, V592, P4115, DOI 10.1113/jphysiol.2014.274316
- Dmochowski JP, 2011, J NEURAL ENG, V8, DOI 10.1088/1741-2560/8/4/046011
- Dmochowski JP, 2013, NEUROIMAGE, V75, P12, DOI 10.1016/j.neuroimage.2013.02.049
- Dmochowski JP, 2012, IEEE ENG MED BIO, P6426, DOI 10.1109/EMBC.2012.6347465
- DOMINGO JL, 1990, DIABETOLOGIA, V33, P62, DOI 10.1007/BF00586463
- Doruk D, 2014, NEUROSCI LETT, V582, P27, DOI 10.1016/j.neulet.2014.08.043
- Durand DM, 2001, P IEEE, V89, P1065, DOI 10.1109/5.939821
- Edwards D, 2013, NEUROIMAGE, V74, P266, DOI 10.1016/j.neuroimage.2013.01.042
- Ekici B, 2015, CLIN EEG NEUROSCI, V46, P169, DOI 10.1177/1550059414540647
- Elder GJ, 2014, ALZHEIMERS RES THER, V6, DOI 10.1186/s13195-014-0074-1
- Elder GJ, 2016, INT PSYCHOGERIATR, V28, P341, DOI 10.1017/S1041610215001180
- Faria P, 2012, EPILEPSY BEHAV, V25, P417, DOI 10.1016/j.yebeh.2012.06.027
- Ferrucci R, 2008, NEUROLOGY, V71, P493, DOI 10.1212/01.wnl.0000317060.43722.a3
- Fertonani A, 2014, FRONT AGING NEUROSCI, V6, DOI 10.3389/fnagi.2014.00131
- Fitz NS, 2015, J MED ETHICS, V41, P410, DOI 10.1136/medethics-2013-101458
- Floel A, 2012, NEUROBIOL AGING, V33, P1682, DOI 10.1016/j.neurobiolaging.2011.05.007
- Frank E, 2010, BRAIN STIMUL, V3, P58, DOI 10.1016/j.brs.2009.04.002
- Fregni F, 2006, EPILEPSIA, V47, P335, DOI 10.1111/j.1528-1167.2006.00426.x
- [Anonymous], 2015, CLIN RES REGUL AFF, DOI 10.3109/10601333.2015.980944
- Fregni F, 2006, MOVEMENT DISORD, V21, P1693, DOI 10.1002/mds.21012
- Fresnoza S, 2014, J NEUROSCI, V34, P2744, DOI 10.1523/JNEUROSCI.3655-13.2014
- Fresnoza S, 2014, J NEUROSCI, V34, P10701, DOI 10.1523/JNEUROSCI.0832-14.2014
- Fusco A, 2014, RESTOR NEUROL NEUROS, V32, P301, DOI 10.3233/RNN-130349
- Fusco A, 2014, BIOMED RES INT, DOI 10.1155/2014/547290
- Galvez V, 2015, CURR PSYCHIAT REP, V17, DOI 10.1007/s11920-015-0592-y
- Galvez V, 2011, J ECT, V27, P256, DOI 10.1097/YCT.0b013e3182012b89
- Gillick BT, 2015, PHYS THER, V95, P337, DOI 10.2522/ptj.20130565
- Gillick BT, 2014, FRONT HUM NEUROSCI, V8, DOI 10.3389/fnhum.2014.00739
- Goodwill AM, 2013, FRONT AGING NEUROSCI, V5, DOI 10.3389/fnagi.2013.00087
- Grecco LAC, 2014, BRAZ J PHYS THER, V18, P419, DOI 10.1590/bjpt-rbf.2014.0053
- Guarienti F, 2015, NEUROMODULATION, V18, P261, DOI 10.1111/ner.12230
- Hagenacker T, 2014, J HEADACHE PAIN, V15, DOI 10.1186/1129-2377-15-78
- Hardwick RM, 2014, NEUROBIOL AGING, V35, P2217, DOI 10.1016/j.neurobiolaging.2014.03.030
- Harty S, 2014, J NEUROSCI, V34, P3646, DOI 10.1523/JNEUROSCI.5308-13.2014
- Ho KA, 2015, J ECT, V31, P226, DOI 10.1097/YCT.0000000000000230
- Holland R, 2011, CURR BIOL, V21, P1403, DOI 10.1016/j.cub.2011.07.021
- Hsu WY, 2015, NEUROBIOL AGING, V36, P2348, DOI 10.1016/j.neurobiolaging.2015.04.016
- Jacobson L, 2012, EXP BRAIN RES, V216, P1, DOI 10.1007/s00221-011-2891-9
- JENNUM P, 1994, EPILEPSY RES, V18, P167, DOI 10.1016/0920-1211(94)90009-4
- Jones KT, 2015, PLOS ONE, V10, DOI 10.1371/journal.pone.0121904
- Kabakov AY, 2012, J NEUROPHYSIOL, V107, P1881, DOI 10.1152/jn.00715.2011
- Kamida T, 2013, NEUROL RES, V35, P602, DOI 10.1179/1743132813Y.0000000170
- Kamida T, 2011, BEHAV BRAIN RES, V217, P99, DOI 10.1016/j.bbr.2010.08.050
- Kandratavicius L, 2014, NEUROPSYCH DIS TREAT, V10, P1693, DOI 10.2147/NDT.S50371
- Kaski D, 2014, CLIN REHABIL, V28, P1115, DOI 10.1177/0269215514534277
- [Anonymous], 2015, JOVE J VIS EXP DEC, DOI 10.3791/53542
- Kessler SK, 2013, PLOS ONE, V8, DOI 10.1371/journal.pone.0076112
- Kessler SK, 2012, BRAIN STIMUL, V5, P155, DOI 10.1016/j.brs.2011.02.007
- Khedr EM, 2014, FRONT AGING NEUROSCI, V6, DOI 10.3389/fnagi.2014.00275
- Kim SJ, 2010, J KOREAN MED SCI, V25, P1499, DOI 10.3346/jkms.2010.25.10.1499
- Kim YJ, 2014, J NEUROENG REHABIL, V11, DOI 10.1186/1743-0003-11-124
- King RB, 1996, STROKE, V27, P1467
- Kronberg G, 2012, IEEE ENG MED BIO, P891, DOI 10.1109/EMBC.2012.6346075
- Kuo HI, 2016, NEUROPSYCHOPHARMACOL, V41, P1223, DOI 10.1038/npp.2015.270
- Laakso I, 2013, J NEURAL ENG, V10, DOI 10.1088/1741-2560/10/4/046009
- Lee SJ, 2014, ARCH PHYS MED REHAB, V95, P431, DOI 10.1016/j.apmr.2013.10.027
- Liebetanz D, 2006, EPILEPSIA, V47, P1216, DOI 10.1111/j.1528-1167.2006.00539.x
- Liebetanz D, 2009, CLIN NEUROPHYSIOL, V120, P1161, DOI 10.1016/j.clinph.2009.01.022
- Liu AL, 2016, EPILEPSY BEHAV, V55, P11, DOI 10.1016/j.yebeh.2015.10.032
- Loo C, 2011, J AFFECT DISORDERS, V132, P1, DOI 10.1016/j.jad.2010.08.017
- Loo CK, 2012, BRIT J PSYCHIAT, V200, P52, DOI 10.1192/bjp.bp.111.097634
- Lugon MDMV, 2015, CEREB CORTEX, DOI [10.1093/cercor/bhv252, DOI 10.1093/CERCOR/BHV252]
- MAEDA A, 1993, STROKE, V24, P1857
- Manenti R, 2014, TIME GO TASK PERFORM, DOI [10.1016/j.neulet.2014.07.052, DOI 10.1016/J.NEULET.2014.07.052]
- Manenti R, 2013, FRONT AGING NEUROSCI, V5, DOI 10.3389/fnagi.2013.00049
- Manenti R, 2015, FRONT AGING NEUROSCI, V7, DOI [10.3389/fnagi.2015.00049, 10.5589/Plagi.2015.00049]
- Mattai A, 2011, BRAIN STIMUL, V4, P275, DOI 10.1016/j.brs.2011.01.001
- McIntire LK, 2014, BRAIN STIMUL, V7, P499, DOI 10.1016/j.brs.2014.04.008
- MCINTYRE DC, 1982, BRAIN RES, V250, P53, DOI 10.1016/0006-8993(82)90952-0
- Medeiros Liciane Fernandes, 2012, Front Psychiatry, V3, P110, DOI 10.3389/fpsyt.2012.00110
- Meinzer M, 2013, J NEUROSCI, V33, P12470, DOI 10.1523/JNEUROSCI.5743-12.2013
- Meinzer M, 2014, FRONT AGING NEUROSCI, V6, DOI 10.3389/fnagi.2014.00253
- Mekonnen A, 2012, IEEE ENG MED BIO, P831, DOI 10.1109/EMBC.2012.6346060
- Merrill DR, 2005, J NEUROSCI METH, V141, P171, DOI 10.1016/j.jneumeth.2004.10.020
- Mielke D, 2013, NEUROL RES, V35, P1029, DOI 10.1179/1743132813Y.0000000248
- Minhas P, 2010, J NEUROSCI METH, V190, P188, DOI 10.1016/j.jneumeth.2010.05.007
- Minhas P, 2011, CLIN NEUROPHYSIOL, V122, P637, DOI 10.1016/j.clinph.2010.09.023
- Miranda PC, 2009, CLIN NEUROPHYSIOL, V120, P1183, DOI 10.1016/j.clinph.2009.03.023
- Moliadze V, 2015, CLIN NEUROPHYSIOL, V126, P1392, DOI 10.1016/j.clinph.2014.10.142
- Monte-Silva K, 2013, BRAIN STIMUL, V6, P424, DOI 10.1016/j.brs.2012.04.011
- Morales-Quezada L, 2015, EXP BRAIN RES, V233, P701, DOI 10.1007/s00221-014-4147-y
- Mortensen J, 2016, DISABIL REHABIL, V38, P637, DOI 10.3109/09638288.2015.1055379
- Duarte Nde AC, 2014, PLOS ONE, V9, DOI 10.1371/journal.pone.0105777.e105777
- Nitsche MA, 2007, J NEUROPHYSIOL, V97, P3109, DOI 10.1152/jn.01312.2006
- Nitsche MA, 2003, CLIN NEUROPHYSIOL, V114, P2220, DOI 10.1016/S1388-2457(03)00235-9
- Nitsche MA, 2000, J PHYSIOL-LONDON, V527, P633, DOI 10.1111/j.1469-7793.2000.t01-1-00633.x
- Nitsche MA, 2004, CLIN NEUROPHYSIOL, V115, P2419, DOI 10.1016/j.clinph.2004.05.001
- Nitsche MA, 2015, NEUROLOGY, V84, P556, DOI 10.1212/WNL.0000000000001242
- Nitsche MA, 2015, BRAIN STIMUL, V8, P666, DOI 10.1016/j.brs.2015.03.008
- Opitz A, 2015, NEUROIMAGE, V109, P140, DOI 10.1016/j.neuroimage.2015.01.033
- Palm U, 2014, BRAIN STIMUL, V7, P762, DOI 10.1016/j.brs.2014.06.006
- Paneri B, 2015, PEERJ PREPR, V3
- Parazzini M, 2013, BRAIN STIMUL, V6, P457, DOI 10.1016/j.brs.2012.05.007
- Parikh PJ, 2015, PLOS ONE, V10, DOI 10.1371/journal.pone.0124137
- Park SH, 2014, NEUROREPORT, V25, P122, DOI 10.1097/WNR.0000000000000080
- Peruzzotti-Jametti L, 2013, STROKE, V44, P3166, DOI 10.1161/STROKEAHA.113.001687
- Peterchev AV, 2012, BRAIN STIMUL, V5, P435, DOI 10.1016/j.brs.2011.10.001
- Pirulli C, 2014, FRONT BEHAV NEUROSCI, V8, DOI 10.3389/fnbeh.2014.00226
- Poreisz C, 2007, BRAIN RES BULL, V72, P208, DOI 10.1016/j.brainresbull.2007.01.004
- Puri R, 2015, FRONT AGING NEUROSCI, V7, DOI 10.3389/fnagi.2015.00107
- Raimondo RJS, 2012, BRAIN STIMUL, V5, P196, DOI 10.1016/j.brs.2011.03.009
- Rampersad SM, 2014, IEEE T NEUR SYS REH, V22, P441, DOI 10.1109/TNSRE.2014.2308997
- Reato D, 2013, PLOS COMPUT BIOL, V9, DOI 10.1371/journal.pcbi.1002898
- Rodriguez N, 2014, BRAIN STIMUL, V7, P765, DOI 10.1016/j.brs.2014.06.005
- Ross LA, 2011, FRONT AGING NEUROSCI, V3, DOI 10.3389/fnagi.2011.00016
- Rossi S, 2009, CLIN NEUROPHYSIOL, V120, P2008, DOI 10.1016/j.clinph.2009.08.016
- Russo R, 2013, BRAIN STIMUL, V6, P946, DOI 10.1016/j.brs.2013.05.009
- Sadleir RJ, 2010, NEUROIMAGE, V51, P1310, DOI 10.1016/j.neuroimage.2010.03.052
- Salthouse TA, 2010, J INT NEUROPSYCH SOC, V16, P754, DOI 10.1017/S1355617710000706
- San-Juan D, 2011, EPILEPSY BEHAV, V20, P126, DOI 10.1016/j.yebeh.2010.10.031
- San-Juan D, 2015, BRAIN STIMUL, V8, P455, DOI 10.1016/j.brs.2015.01.001
- San-Juan D, 2011, EPILEPSY BEHAV, V21, P318, DOI 10.1016/j.yebeh.2011.04.010
- Sandrini M, 2014, FRONT AGING NEUROSCI, V6, DOI 10.3389/fnagi.2014.00289
- Sattler V, 2015, NEUROREHAB NEURAL RE, V29, P743, DOI 10.1177/1545968314565465
- Sawyer DW, 1989, REV INFECT DIS, V11, pS1532
- Shiozawa P, 2013, J ECT, V29, P147, DOI 10.1097/YCT.0b013e318279c1a1
- Shiozawan P, 2013, J COMP EFFECT RES, V2, P213, DOI [10.2217/cer.13.28, 10.2217/CER.13.28]
- Silverman IE, 2002, ARCH NEUROL-CHICAGO, V59, P195, DOI 10.1001/archneur.59.2.195
- Smit M, 2015, NEUROPSYCHOLOGIA, V74, P152, DOI 10.1016/j.neuropsychologia.2015.04.014
- Steenbergen L, 2016, EXP BRAIN RES, V234, P637, DOI 10.1007/s00221-015-4391-9
- Stephen LJ, 2000, LANCET, V355, P1441, DOI 10.1016/S0140-6736(00)02149-8
- Suemoto CK, 2014, BRAIN STIMUL, V7, P308, DOI 10.1016/j.brs.2013.10.003
- Sundaram A., 2009, JOURNAL OF PAIN MANA, V2, P285
- Sunderam S, 2010, EPILEPSY BEHAV, V17, P6, DOI 10.1016/j.yebeh.2009.10.017
- SWARTZWELDER HS, 1987, BRAIN RES, V410, P362
- Tadini L, 2011, J ECT, V27, P134, DOI 10.1097/YCT.0b013e3181e631a8
- Tahtis V, 2014, RESTOR NEUROL NEUROS, V32, P527, DOI 10.3233/RNN-140393
- Tippett Donna C, 2015, Curr Treat Options Neurol, V17, P362, DOI 10.1007/s11940-015-0362-5
- Tor PC, 2015, J CLIN PSYCHIAT, V76, pE1092, DOI 10.4088/JCP.14r09145
- Vernieri F, 2010, STROKE, V41, P2087, DOI 10.1161/STROKEAHA.110.583088
- Vestito L, 2014, FRONT HUM NEUROSCI, V8, DOI 10.3389/fnhum.2014.00785
- Wachter D, 2011, EXP NEUROL, V227, P322, DOI 10.1016/j.expneurol.2010.12.005
- Walbert T, 2015, CANCER TREAT RES, V163, P171, DOI 10.1007/978-3-319-12048-5_11
- Wang J, 2015, BRAIN STIMUL, V8, P165, DOI 10.1016/j.brs.2014.10.015
- Wexler A, 2016, J MED ETHICS, V42, P211, DOI 10.1136/medethics-2015-102704
- Woods AJ, 2016, CLIN NEUROPHYSIOL, V127, P1031, DOI 10.1016/j.clinph.2015.11.012
- Wu DY, 2015, NEUROSCI LETT, V589, P115, DOI 10.1016/j.neulet.2015.01.045
- Yamamoto J, 2006, SEIZURE-EUR J EPILEP, V15, P520, DOI 10.1016/j.seizure.2006.06.004
- Yook Soon-Won, 2011, Annals of Rehabilitation Medicine, V35, P579, DOI 10.5535/arm.2011.35.4.579
- Young SJ, 2014, J CHILD NEUROL, V29, P232, DOI 10.1177/0883073813492385
- Young SJ, 2013, J CHILD NEUROL, V28, P1238, DOI 10.1177/0883073812460092
- Zhou DG, 2015, EXP BRAIN RES, V233, P2401, DOI 10.1007/s00221-015-4310-0