Event Abstract Back to Event Non-organic cognitive deficits: A case report of functional disturbance in the production of ordinal information. Jean-Philippe Van Dijck1, 2*, Katleen Vandeput3, Christophe Lafosse3, Rob Hartsuiker1 and Wim Fias1 1 Ghent University, Experimental Psychology, Belgium 2 University of Antwerp, Collaborative Antwerp Psychiatric Research Institute (CAPRI), Belgium 3 Revalidatieziekenhuis RevArte, Belgium For +- 30% of the outpatients who consult a neurologist, no disease is found explaining their symptoms (Stone et al., 2005). A significant amount of them suffers from functional symptoms. These are systematic deficits in the functioning of (parts) of an organically intact nervous system. Several examples exist, including muscle weakness and sensory symptoms. Here we provide first evidence suggesting that such functional symptoms can also manifest as a very specific cognitive disorder with symptoms that are consistent with recent neuro-imaging findings and contemporary cognitive models. We describe a woman suffering from severe problems in the spontaneous production of spoken numbers (with spared number comprehension and calculation, number-word reading and writing). MRI, SPECT and QEEG did not reveal (expected) brain abnormalities, but psychological consults revealed severe emotional trauma. Detailed theory-driven investigations showed additional difficulties when repeating non-words and pointed to a number selective deficit for accessing the phonological output buffer. Subsequently, in line with the idea that the processing of numbers and other ordinal information draws upon the overlapping (functional) networks, we found that her problems extended to the spoken production of other ordinal information. Reevaluation 2 years after the onset of her problems revealed normal performance in the previously affected domains. Implications for theory and clinic are discussed. References Stone, J., Carson, A. & Sharpe, M. (2005). Functional symptoms and signs in neurology: assessment and diagnosis. Journal of Neurology, Neurosurgery and Psychiatry: 76(Suppl I):i2–i12. doi: 10.1136/jnnp.2004.061655 Keywords: Conversion Disorder, Functional deficits, cognitive neuropsychology, cognitive neuropsychiatry, serial order production Conference: Belgian Brain Council 2014 MODULATING THE BRAIN: FACTS, FICTION, FUTURE, Ghent, Belgium, 4 Oct - 4 Oct, 2014. Presentation Type: Oral Presentation Topic: Basic Neuroscience Citation: Van Dijck J, Vandeput K, Lafosse C, Hartsuiker R and Fias W (2014). Non-organic cognitive deficits: A case report of functional disturbance in the production of ordinal information.. Conference Abstract: Belgian Brain Council 2014 MODULATING THE BRAIN: FACTS, FICTION, FUTURE. doi: 10.3389/conf.fnhum.2014.214.00074 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 01 Jul 2014; Published Online: 02 Sep 2014. * Correspondence: Dr. Jean-Philippe Van Dijck, Ghent University, Experimental Psychology, Ghent, 9000, Belgium, jeanphilippe.vandijck@ugent.be Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Jean-Philippe Van Dijck Katleen Vandeput Christophe Lafosse Rob Hartsuiker Wim Fias Google Jean-Philippe Van Dijck Katleen Vandeput Christophe Lafosse Rob Hartsuiker Wim Fias Google Scholar Jean-Philippe Van Dijck Katleen Vandeput Christophe Lafosse Rob Hartsuiker Wim Fias PubMed Jean-Philippe Van Dijck Katleen Vandeput Christophe Lafosse Rob Hartsuiker Wim Fias Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.