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Using this circular causality principle it is shown that under certain conditions the Lotka\u2013Volterra\u2013Haken amplitude equations can be derived from a general model of brain activity akin to the Wilson\u2013Cowan model. The model captures the amplitude dynamics for brain activity patterns in experiments involving several consecutively performed multiple-choice tasks. This is explicitly demonstrated for two-choice tasks involving grasping and walking. A comment on the relevance of the theoretical framework for clinical psychology and schizophrenia is given as well. <\/jats:p>","DOI":"10.1142\/s0218127416501649","type":"journal-article","created":{"date-parts":[[2016,9,23]],"date-time":"2016-09-23T09:53:59Z","timestamp":1474624439000},"page":"1650164","source":"Crossref","is-referenced-by-count":20,"title":["Formal Derivation of Lotka\u2013Volterra\u2013Haken Amplitude Equations of Task-Related Brain Activity in Multiple, Consecutively Performed Tasks"],"prefix":"10.1142","volume":"26","author":[{"given":"T. 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