{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T17:59:31Z","timestamp":1790013571792,"version":"4.0.1"},"reference-count":62,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2024,6,5]],"date-time":"2024-06-05T00:00:00Z","timestamp":1717545600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["178316478"],"award-info":[{"award-number":["178316478"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["454012190"],"award-info":[{"award-number":["454012190"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["alz-journals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Alzheimer's &amp;amp; Dementia"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>INTRODUCTION<\/jats:title>\n                    <jats:p>Atrial fibrillation (AF) is associated with an elevated risk of cognitive impairment and dementia. Understanding the cognitive sequelae and brain structural changes associated with AF is vital for addressing ensuing health care needs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS AND RESULTS<\/jats:title>\n                    <jats:p>We examined 1335 stroke\u2010free individuals with AF and 2683 matched controls using neuropsychological assessments and multimodal neuroimaging. The analysis revealed that individuals with AF exhibited deficits in executive function, processing speed, and reasoning, accompanied by reduced cortical thickness, elevated extracellular free\u2010water content, and widespread white matter abnormalities, indicative of small vessel pathology. Notably, brain structural differences statistically mediated the relationship between AF and cognitive performance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>DISCUSSION<\/jats:title>\n                    <jats:p>Integrating a comprehensive analysis approach with extensive clinical and magnetic resonance imaging data, our study highlights small vessel pathology as a possible unifying link among AF, cognitive decline, and abnormal brain structure. These insights can inform diagnostic approaches and motivate the ongoing implementation of effective therapeutic strategies.<\/jats:p>\n                    <jats:sec>\n                      <jats:title>Highlights<\/jats:title>\n                      <jats:p>\n                        <jats:list list-type=\"bullet\">\n                          <jats:list-item>\n                            <jats:p>We investigated neuropsychological and multimodal neuroimaging data of 1335 individuals with atrial fibrillation (AF) and 2683 matched controls.<\/jats:p>\n                          <\/jats:list-item>\n                          <jats:list-item>\n                            <jats:p>Our analysis revealed AF\u2010associated deficits in cognitive domains of attention, executive function, processing speed, and reasoning.<\/jats:p>\n                          <\/jats:list-item>\n                          <jats:list-item>\n                            <jats:p>Cognitive deficits in the AF group were accompanied by structural brain alterations including reduced cortical thickness and gray matter volume, alongside increased extracellular free\u2010water content as well as widespread differences of white matter integrity.<\/jats:p>\n                          <\/jats:list-item>\n                          <jats:list-item>\n                            <jats:p>Structural brain changes statistically mediated the link between AF and cognitive performance, emphasizing the potential of structural imaging markers as a diagnostic tool in AF\u2010related cognitive decline.<\/jats:p>\n                          <\/jats:list-item>\n                        <\/jats:list>\n                      <\/jats:p>\n                    <\/jats:sec>\n                  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