“…This idea is supported by several studies showing a greater increase in facial EMG activity during the reading of difficult text or while performing difficult mental arithmetic tasks, compared to easier tasks (e.g., Faaborg-Andersen et al, 1958 ; Sokolov, 1972 ), suggesting a greater involvement of the speech motor system. Alternatively, these results may suggest a lesser involvement of inhibitory mechanisms (see also the discussion in Nalborczyk, 2019 , 2020 ). This is congruent with the increased reliance on associative mechanisms with greater expertise, as discussed previously.…”