The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is. Year SJR 2006 0. 354 2007 0. 413 2008 0. 825 2009 1. 148 2010 1. 173 2011 1. 279 2012 1. 085 2013 0. 813 2014 1. 103 2015 1. 268 2016 1. 259 2017 1. 234 2018 1. 237 2019 1. 147 This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year.
Cognitive function can be affected by several factors including attention, emotion, and sleep. In restless legs syndrome (RLS), cognitive dysfunction may ensue due to sleep disturbance, emotional disorders, and attention deficit which are common in RLS. However, it remains unclear whether cognitive performance is decreased in patients with RLS. To date, there are ten published articles which studied cognition in RLS. Five studies reported cognitive dysfunction of RLS, particularly decreased performance in the attention, frontal executive function, and mental flexibility function. Three reported no significant differences in cognitive performance between RLS patients and control subjects. Two studies reported even better performance in patients with RLS compared with control subjects. Dopamine agonist may improve cognitive performance in RLS. However, it remains unclear whether this is direct effect on RLS symptoms or indirect effect including improved sleep duration, daytime sleepiness and depression, or both.
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