“…Empirical studies with findings that support this relationship investigated patient groups; for example, a negative association has been found between schizophrenia and somatosensory task performance (i.e., a proprioceptive deficit; Chang & Lenzenweger, 2005;Ritzler & Rosenbaum, 1974;Rosenbaum, Flenning, & Rosen, 1965), although null findings are also known (Leventhal, Schuck, Clemons, & Cox, 1982). A study investigating fibromyalgia reported no difference between patients and healthy controls in the proprioceptive accuracy of the knee (Ulus, Akyol, Tander, Bilgici, & Kuru, 2013), while other findings indicate that people with fibromyalgia rely more on visual feedback in the proprioceptive task of the upper arm (Bardal, Roeleveld, Ihlen, & Mork, 2016). A narrative review on knee osteoarthritis indicated impaired proprioceptive accuracy of the knee of the patients (Knoop et al, 2011).…”