{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T09:38:27Z","timestamp":1777887507152,"version":"3.51.4"},"reference-count":32,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[1998,10,1]],"date-time":"1998-10-01T00:00:00Z","timestamp":907200000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Psychol Rep"],"published-print":{"date-parts":[[1998,10]]},"abstract":"<jats:p>Cardiovascular and catecholaminergic activity during mental load were studied in patients with Tourette syndrome. Patients and controls performed the Color Word Test, preceded by a baseline period, with continuous measurements of heart rate and blood pressure. Blood samples for assay of plasma catecholamine concentrations were obtained before and during the test. The patients showed higher heart rate and blood pressure during baseline than controls, but no differences regarding plasma catecholamines. The tics corresponded with transient increases in heart rate and blood pressure. Spectral analysis of cardiovascular variability during mental load gave only limited evidence of increased sympathetic activity and no alterations in parasympathetic activity in the patients. Therefore, our findings indicate enhanced cardiovascular activity in the patients but not during mental load. The effects of tics on the cardiovascular parameters illustrate the functional complexity of the autonomic nervous system in Tourette syndrome.<\/jats:p>","DOI":"10.2466\/pr0.1998.83.2.515","type":"journal-article","created":{"date-parts":[[2011,8,31]],"date-time":"2011-08-31T14:34:13Z","timestamp":1314801253000},"page":"515-529","source":"Crossref","is-referenced-by-count":7,"title":["Autonomic Regulation during Rest and Mental Load in Gilles de la Tourette Syndrome"],"prefix":"10.1177","volume":"83","author":[{"given":"J. H. M.","family":"Tulen","sequence":"first","affiliation":[{"name":"Department of Psychiatry, University Hospital Rotterdam\u2013Dijkzigt, Erasmus University Rotterdam"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B. J. 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