Time course of the articulatory encoding at articulator-discriminative recording sites in the STN and sensorimotor cortex (SMC). A, B, Average high-gamma activity at the STN (A) and SMC (B) articulator-responsive recording sites for trials with word-initial tongue (coronal) and word-initial lip (labial) consonants. C, Number of articulator-responsive electrodes in the STN (a total of 23%) and SMC (a total of 30%) broken down by articulator type. D, Distribution of the effect sizes (Hedges' g) quantifying the difference in average z-scored high-gamma power between trials with word-initial coronal and word-initial labial consonants at each time point of the STN and SMC recordings. Throughout A, B, and D, gray dashed vertical lines represent vowel onset (time = 0 s) and dotted vertical lines represent consonant onset.