Electrophysiological evidence for changes in attentional orienting and selection in functional somatic symptoms

Medically unexplained symptoms (MUS) or functional somatic symptoms are characterised by unpleasant physical sensations with medical characteristics that do not correspond adequately to any acknowledged medical impairment. The nature of symptoms greatly varies, ranging from headaches, joint weaknesses, back pains, and heart palpitation, to severe cases of temporal blindness, motor paralysis, and even epileptic seizure. However, the underlying cause of MUS remains largely unknown (APA, 2013; Hatcher and Arrol, 2008).

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