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Here we show that levodopa-induced dyskinesia in hemiparkinsonian rats is strongly associated with pronounced 80 Hz local field potential oscillations in the primary motor cortex following levodopa treatment. When this oscillation is interrupted by application of a dopamine antagonist onto the cortical surface the dyskinetic symptoms disappear. The finding that abnormal cortical oscillations are a key pathophysiological mechanism calls for a revision of the prevailing hypothesis that links levodopa-induced dyskinesia to an altered sensitivity to dopamine only in the striatum. Apart from having important implications for the treatment of Parkinson's disease, the discovered pathophysiological mechanism may also play a role in several other psychiatric and neurological conditions involving cortical dysfunction.<\/jats:p>","DOI":"10.1523\/jneurosci.3047-12.2012","type":"journal-article","created":{"date-parts":[[2012,11,21]],"date-time":"2012-11-21T18:03:53Z","timestamp":1353521033000},"page":"16541-16551","source":"Crossref","is-referenced-by-count":139,"title":["Levodopa-Induced Dyskinesia Is Strongly Associated with Resonant Cortical Oscillations"],"prefix":"10.1523","volume":"32","author":[{"given":"P\u00e4r","family":"Halje","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Tamt\u00e8","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulrike","family":"Richter","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohsin","family":"Mohammed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. 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