Broad cognitive complaints but subtle objective working memory impairment in fibromyalgia patients
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Title: | Broad cognitive complaints but subtle objective working memory impairment in fibromyalgia patients |
Author: | Pidal Miranda, Marina González Villar, Alberto Jacobo Carrillo de la Peña, María Teresa Andrade Fernández, Elena María Rodríguez Salgado, Dolores |
Affiliation: | Universidade de Santiago de Compostela. Departamento de Psicoloxía Clínica e Psicobioloxía Universidade de Santiago de Compostela. Departamento de Psicoloxía Social, Básica e Metodoloxía |
Subject: | Chronic pain | Dyscognition | Working memory | Cognitive complaints | Fibromyalgia | Fibrofog | Cognition | Neuropsychological performance | Cognitive dysfunction | |
Date of Issue: | 2018 |
Publisher: | PEERJ INC |
Citation: | Pidal-Miranda M, González-Villar AJ, Carrillo-de-la-Peña MT, Andrade E, Rodríguez-Salgado D. 2018. Broad cognitive complaints but subtle objective working memory impairment in fibromyalgia patients. PeerJ 6:e5907 |
Abstract: | Background Cognitive dysfunction in fibromyalgia (FM) encompasses objective cognitive difficulties, as measured in neuropsychological tests, and self-reported cognitive complaints. Although it has been suggested that FM patients display problems in working memory, the data are inconsistent, and the overall working memory status of the patients is unclear. It is also not clear whether the working memory problems are related to cognitive complaints or how the dyscognition is affected by the characteristic clinical symptoms of FM. Methods To clarify these aspects, we explored the neuropsychological performance for different components of working memory and the subjective self-perception of cognitive status in a sample of 38 women with FM. They were compared with a matched group of 32 healthy women. Results Our findings suggested that the FM patients do not differ from healthy controls in their overall working memory functioning. Only a poor performance was found in a single task of visuospatial working memory, mediated by the presence of depressive symptoms, fatigue and pain. The FM patients also displayed a higher level of perception of cognitive difficulties than healthy controls, and this difference was mediated by depression and fatigue. Furthermore, cognitive complaints in FM patients were only associated with a lower verbal WM capacity. Discussion FM patients have a subtle specific impairment in their working memory functioning, as well as elevated concern about their cognitive status. These findings suggest a disconnection between neuropsychological performance and subjective complaints. In FM patients, clinical variables such as pain, fatigue, and depression play an important role in dyscognition, as assessed by both objective and subjective measures, and should be taken into account in future research |
Publisher version: | https://doi.org/10.7717/peerj.5907 |
URI: | http://hdl.handle.net/10347/22380 |
DOI: | 10.7717/peerj.5907 |
E-ISSN: | 2167-8359 |
Rights: | © 2018 Pidal-Miranda et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited |
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Except where otherwise noted, this item's license is described as © 2018 Pidal-Miranda et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited