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This framing raises the issue of how biological neural circuits actually process information, and some of the most fundamental outstanding questions in neuroscience center on understanding the mechanisms of neural information processing. Classical information theory has long been understood to be a natural framework within which information processing can be understood, and recent advances in the field of multivariate information theory offer new insights into the structure of computation in complex systems. In this review, we provide an introduction to the conceptual and practical issues associated with using multivariate information theory to analyze information processing in neural circuits, as well as discussing recent empirical work in this vein. Specifically, we provide an accessible introduction to the partial information decomposition (PID) framework. PID reveals redundant, unique, and synergistic modes by which neurons integrate information from multiple sources. We focus particularly on the synergistic mode, which quantifies the \u201chigher-order\u201d information carried in the patterns of multiple inputs and is not reducible to input from any single source. Recent work in a variety of model systems has revealed that synergistic dynamics are ubiquitous in neural circuitry and show reliable structure\u2013function relationships, emerging disproportionately in neuronal rich clubs, downstream of recurrent connectivity, and in the convergence of correlated activity. We draw on the existing literature on higher-order information dynamics in neuronal networks to illustrate the insights that have been gained by taking an information decomposition perspective on neural activity. Finally, we briefly discuss future promising directions for information decomposition approaches to neuroscience, such as work on behaving animals, multi-target generalizations of PID, and time-resolved local analyses.<\/jats:p>","DOI":"10.3390\/e24070930","type":"journal-article","created":{"date-parts":[[2022,7,5]],"date-time":"2022-07-05T10:21:33Z","timestamp":1657016493000},"page":"930","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Revealing the Dynamics of Neural Information Processing with Multivariate Information Decomposition"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7006-4112","authenticated-orcid":false,"given":"Ehren","family":"Newman","sequence":"first","affiliation":[{"name":"Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3317-9882","authenticated-orcid":false,"given":"Thomas","family":"Varley","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vibin","family":"Parakkattu","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samantha","family":"Sherrill","sequence":"additional","affiliation":[{"name":"Brighton and Sussex Medical School, University of Sussex, Brighton BN1 9RH, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John","family":"Beggs","sequence":"additional","affiliation":[{"name":"Department of Physics, Indiana University, Bloomington, IN 47405, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,5]]},"reference":[{"key":"ref_1","unstructured":"Williams, P.L., and Beer, R.D. 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