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EEG does not measure fear directly; it captures cortical dynamics compatible with threat processing, arousal or vigilance. This paper introduces the Fear-EEG-AIFramework, a technology-independent architecture for designing, validating and deploying EEG\u2013AI systems targeting fear-compatible neurophysiological states. Building on a prior systematic review, it organizes development into three hierarchical levels\u2014neurobiological foundation, neuroelectric correlates and computational modeling\u2014governed by six cross-cutting principles, and makes them evaluable through eight observable dimensions, the Fear-EEG-AI Alignment Index (FAI) and five validation evidence levels. Applied to the eight eligible studies of that corpus by two raters who had not drafted the instrument, with adjudication by a third, the rubric reached 67.2% exact agreement (quadratic-weighted \u03ba=0.741; ICC(2,1) =0.744). Under 10,000 admissible weightings the equal-weight ordering survived in 10.1% of draws, and one of 56 ordered pairs met a stability criterion fixed before the pairwise results were tabulated. The index is therefore reported as a descriptor of methodological documentation and not as a ranking of implementations.<\/jats:p>","DOI":"10.3390\/s26196349","type":"journal-article","created":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T16:43:38Z","timestamp":1791564218000},"page":"6349","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fear-EEG-AI: A Conceptual and Operational Framework for Designing EEG-AI Systems for the Inference of Fear-Compatible Neurophysiological States"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4504-0095","authenticated-orcid":false,"given":"Bladimir","family":"Serna","sequence":"first","affiliation":[{"name":"Centro de Innovaci\u00f3n, Competitividad y Sostenibilidad, Universidad Aut\u00f3noma de Guerrero, Acapulco 39640, Guerrero, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5844-8321","authenticated-orcid":false,"given":"Ricardo","family":"Salazar","sequence":"additional","affiliation":[{"name":"Tecnolog\u00eda e Innovaci\u00f3n (SECIHTI), Universidad Aut\u00f3noma de Guerrero, Chilpancingo 39070, Guerrero, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"project-administration","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2699-140X","authenticated-orcid":false,"given":"Gustavo A.","family":"Alonso-Silverio","sequence":"additional","affiliation":[{"name":"Facultad de Ingenier\u00eda, Universidad Aut\u00f3noma de Guerrero, Chilpancingo 39079, Guerrero, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"methodology","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8847-8732","authenticated-orcid":false,"given":"Rosario","family":"Baltazar","sequence":"additional","affiliation":[{"name":"Divisi\u00f3n de Estudios de Posgrado, Tecnol\u00f3gico Nacional de M\u00e9xico\/Campus Le\u00f3n, Le\u00f3n 37290, Guanajuato, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"validation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6859-4309","authenticated-orcid":false,"given":"El\u00edas","family":"Ventura-Molina","sequence":"additional","affiliation":[{"name":"Centro de Innovaci\u00f3n y Desarrollo Tecnol\u00f3gico en Computo, Instituto Polit\u00e9cnico Nacional, Mexico City 07738, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"validation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9785-1252","authenticated-orcid":false,"given":"Antonio","family":"Alarc\u00f3n-Paredes","sequence":"additional","affiliation":[{"name":"Centro de Investigaci\u00f3n en Computaci\u00f3n, Instituto Polit\u00e9cnico Nacional, Mexico City 07738, Mexico"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"validation","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,10,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"653","DOI":"10.1016\/j.neuron.2012.02.004","article-title":"Rethinking the Emotional Brain","volume":"73","author":"LeDoux","year":"2012","journal-title":"Neuron"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1016\/j.tics.2017.03.002","article-title":"A Network Model of the Emotional Brain","volume":"21","author":"Pessoa","year":"2017","journal-title":"Trends Cogn. 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