References:

(1) https://www.ncbi.nlm.nih.gov/pubmed/23893519/

(2) https://www.ncbi.nlm.nih.gov/pubmed/25397820

(3) https://www.ncbi.nlm.nih.gov/pubmed/26782083

(4) https://www.eeginfo.com/research/articles/PTSD-NeurofeedbackRemedy.pdf

(5) http://www.eeginfo.com/research/researchpapers/RodaKorset_update%20graphics%20corrected.pdf

(6) https://www.ncbi.nlm.nih.gov/labs/articles/27889444/

(7) https://www.ncbi.nlm.nih.gov/pubmed/24439093

(8) https://www.ncbi.nlm.nih.gov/pubmed/21629014

(9) https://www.ncbi.nlm.nih.gov/pubmed/27543343

(10) http://journals.sfu.ca/seemj/index.php/seemj/article/view/377

(11) https://www.ncbi.nlm.nih.gov/pubmed/22402094/

(12) https://www.ncbi.nlm.nih.gov/pubmed/22402094/

(13) http://journals.sagepub.com/doi/abs/10.1177/1534765609347549?journalCode=tmta

(14) https://www.ncbi.nlm.nih.gov/pubmed/23364126

(15) https://en.wikipedia.org/wiki/Eye_movement_desensitization_and_reprocessing

(16) https://www.ncbi.nlm.nih.gov/pubmed/10225500

(17) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951033/

(18) http://www.emdr.com.au/faq.php

(19) http://www.istss.org/treating-trauma/effective-treatments-for-ptsd,-2nd-edition.aspx

(20) https://www.ncbi.nlm.nih.gov/pubmed/24338345

(21) https://www.ncbi.nlm.nih.gov/pubmed/23842024

(22) https://www.ncbi.nlm.nih.gov/pubmed/17267924

(23) https://www.ncbi.nlm.nih.gov/pubmed/19169192

(24) http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1099-0879(199809)5:3%3C126::AID-CPP153%3E3.0.CO;2-H/abstract?systemMessage=Pay+per+view+article+purchase%28PPV%29+on+Wiley+Online+Library+will+be+unavailable+on+Saturday+11th+March+from+05%3A00-14%3A00+GMT+%2F+12%3A00-09%3A00+EST+%2F+13%3A00-22%3A00+SGT+for+essential+maintenance.++Apologies+for+the+inconvenience.

(25) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951033/

(26) https://www.ncbi.nlm.nih.gov/pubmed/17990196

(27) https://www.ncbi.nlm.nih.gov/pubmed/22622278

(28) https://www.ncbi.nlm.nih.gov/pubmed/16740177

(29) https://www.ncbi.nlm.nih.gov/pubmed/25101684

(30) https://www.ncbi.nlm.nih.gov/pubmed/25188700

(31) https://www.ncbi.nlm.nih.gov/pubmed/25974059

(32) https://link.springer.com/article/10.1007/BF02109568

(33) https://www.ncbi.nlm.nih.gov/pubmed/21629014

(34) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3402102/

(35) https://www.ncbi.nlm.nih.gov/pubmed/20633378/

(36) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4166996/

(37) https://www.ncbi.nlm.nih.gov/pubmed/25278857

(38) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4176918/

(39) https://www.ncbi.nlm.nih.gov/pubmed/11455071/

(40) https://stress.org/wp-content/uploads/CES_Research/CES-for-PTSD.pdf

(41) https://www.ncbi.nlm.nih.gov/pubmed/?term=cranial+electrotherapy+stimulation+psychiatric+clinics

(42) http://www.bestbrainmachines.com/Cerebrospinal_fluid_and_cranial_electrical_stimulation.pdf

(43) https://www.ncbi.nlm.nih.gov/pubmed/?term=cranial+electrotherapy+stimulation+psychiatric+clinics

(44) https://www.ncbi.nlm.nih.gov/pubmed/22741094

(45) https://www.ncbi.nlm.nih.gov/pubmed/25830798

(46) http://medistim.hu/wp-content/uploads/2014/07/Military-Survey-Poster.pdf

(47) https://www.ncbi.nlm.nih.gov/pubmed/14992978/

(48) https://www.ncbi.nlm.nih.gov/pubmed/20051219/

(49) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4177524/

(50) https://www.ncbi.nlm.nih.gov/pubmed/25430781

(51) https://www.ncbi.nlm.nih.gov/pubmed/15253099

(52) https://www.ncbi.nlm.nih.gov/pubmed/24898771

(53) https://www.ncbi.nlm.nih.gov/pubmed/17032096

(54) https://www.ncbi.nlm.nih.gov/labs/articles/16389060/

(55) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4588123/

(56) https://www.ncbi.nlm.nih.gov/pubmed/27548470

(57) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4676265/

(58) https://www.ncbi.nlm.nih.gov/pubmed/26626947

(59) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3668337/

(60) https://www.ncbi.nlm.nih.gov/pubmed/22016520

(61) http://onlinelibrary.wiley.com/doi/10.1111/jpi.12330/pdf

(62) http://koomeshjournal.semums.ac.ir/browse.php?a_id=2598&sid=1&slc_lang=en

(63) https://www.ncbi.nlm.nih.gov/pubmed/9821570

(64) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375291/

(65) https://www.ncbi.nlm.nih.gov/pubmed/26095980

(66) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4152223/

(67) https://www.ncbi.nlm.nih.gov/pubmed/20680439

(68) https://www.resourcenter.net/images/AAPB/Files/Biofeedback/2008/biof_trauma_treatment.pdf

(69) https://www.ncbi.nlm.nih.gov/pubmed/27311838

(70) https://www.ncbi.nlm.nih.gov/pubmed/10804906

(71) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4862083/

(72) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3246136/

(73) http://www.medscape.com/viewarticle/851634

(74) http://jamanetwork.com/journals/jamapsychiatry/fullarticle/2436276

(75) http://www.aapb-biofeedback.com/doi/abs/10.5298/1081-5937-41.3.05?code=aapb-site

(76) https://www.heartmath.org/research/research-library/basic/improving-cognition-in-recently-returned-combat-veterans/

(77) https://www.ncbi.nlm.nih.gov/pubmed/20653296

(78) http://circ.ahajournals.org/content/118/8/863.long

(79) https://en.wikipedia.org/wiki/Heart_rate_variability

(80) https://en.wikipedia.org/wiki/Vagal_tone