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. 2017 Jul 10;8:120. doi: 10.3389/fpsyt.2017.00120

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Copyright © 2017 Térémetz, Carment, Brénugat-Herne, Croca, Bleton, Krebs, Maier, Amado and Lindberg.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Group differences in the four key-Finger Force Manipulandum (FFM) scores. Average score (and SD) for each task. Patients (SCZ, represented by squares) vs. control subjects (circles). (A) Tracking error (N) during the finger force-tracking task. (B) Number of correct taps per trial during recall of the sequential finger-tapping task. (C) Tap interval variability (ms) across all conditions of the single-finger-tapping task. (D) Degree of individuation across all fingers for every combination during the multi-finger-tapping task. Compared to control subjects, patients with schizophrenia showed a statistically significant difference (*P < 0.05) in all four key-FFM scores.