A group in Belgium evaluated 25 subjects with CFS, 25 subjects with major depressive disorder (MDD) and 25 healthy subjects using standardized tests of attention, working memory and verbaland visual episodic memory. They were also tested for effects related to lack of effort/simulation, suggestibility and fatigue. Patients with CFS had slower phasic alertness; they also had impaired working, visual and verbal episodic memory compared to controls. This study confirmed the presence of an objective impairment in attention and memory in patients with CFS. (Clinical Neurology and Neurosurgery, Jan. 19, 2011 [e-pub], May 2011 [print])

Tags: , , January 19, 2011