Figure 2.

Top: a conjunction analysis of sequencing in all three effector systems (left hand, right hand, speech) without contrasting activation against repetition (as in Figure 2) reveals largely shared networks involving left area 44 in Broca’s region (conjunction analysis of individual maps FWE-corrected at p < 0.05). Bottom: comparing speech (single, repeated, or sequenced syllables) to button presses reveals the stronger involvement of area 44 in Broca’s region, bilateral premotor cortex, and the SMA (area 6) (FWE-corrected at p < 0.05).