![]() ![]() To test a priori hypotheses that brain activation to simple handwriting in cortical sensorimotor and supplementary motor regions would be less specific in patients than in controls, we defined right and left primary motor (M1) and somatosensory (S1) and supplementary motor area (SMA) ROIs. Methods: Twenty‐one patients with right upper limb idiopathic dystonia (6 with task‐specific dystonia) and twenty‐one healthy volunteers matched for age and years of education were submitted to a simple right‐hand writing task paradigm that consisted of 4 epochs of alternating writing/resting blocks. Latter advances in functional near infrared spectroscopy offer a new possibility for investigating cortical areas and the neural correlates of complex motor behaviors non‐invasively under naturalistic experimentation. Background: Techniques such as fMRI and PET impose important physical constraints. Objective: This study aimed to investigate the cortical activity in focal right upper limb dystonia patients using functional near infrared spectroscopy (fNIRS) during writing. ![]()
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