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We discuss major theories of consciousness, physical exam-based and electroencephalographic metrics used to stratify levels of consciousness, and tools used to shed light on the neural correlates of the conscious experience. Lastly, we review an expanded category of \u2018disorders of consciousness,\u2019 which includes disorders that impact either the level or experience of consciousness.<\/jats:p><\/jats:sec><jats:sec><jats:title>Recent Findings<\/jats:title><jats:p>Recent studies have revealed many of the requisite EEG, ERP, and fMRI signals to predict aspects of the conscious experience. Neurological disorders that disrupt the reticular activating system can affect the level of consciousness, whereas cortical disorders from seizures and migraines to strokes and dementia may disrupt phenomenal consciousness. The recently introduced memory theory of consciousness provides a new explanation of phenomenal consciousness that may explain better than prior theories both experimental studies and the neurologist\u2019s clinical experience.<\/jats:p><\/jats:sec><jats:sec><jats:title>Summary<\/jats:title><jats:p>Although the complete neurobiological basis of consciousness remains a mystery, recent advances have improved our understanding of the physiology underlying level of consciousness and phenomenal consciousness.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s11910-023-01276-0","type":"journal-article","created":{"date-parts":[[2023,6,12]],"date-time":"2023-06-12T01:01:59Z","timestamp":1686531719000},"page":"345-352","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["The Current of Consciousness: Neural Correlates and Clinical Aspects"],"prefix":"10.1007","volume":"23","author":[{"given":"Garrett","family":"Friedman","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katherine W.","family":"Turk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew E.","family":"Budson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,6,12]]},"reference":[{"key":"1276_CR1","doi-asserted-by":"publisher","first-page":"227","DOI":"10.1017\/S0140525X00038188","volume":"18","author":"N Block","year":"1995","unstructured":"Block N. 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