Table 4.

Volumes of the left and right pars opercularis in 10 chimpanzees in whom the inferior precentral sulcus consisted of more than one segment

ChimpanzeeSegmentLeft POP VolRight POP Vol
1Anterior0.771.26
Posterior1.682.28
21Anterior0.581.21
Posterior0.951.67
2Anterior1.121.24
Middle2.04
Posterior2.20
23Anterior1.241.39
Posterior1.451.87
26Anterior0.780.85
Posterior1.26
9Anterior1.211.29
Posterior1.66
14Anterior0.501.13
Posterior0.89
28Anterior0.731.31
Middle1.692.51
Posterior2.37
29Anterior0.560.82
Posterior1.06
30Anterior1.050.99
Posterior1.55
  • Bold indicates the chimpanzees in whom volume asymmetry (Vol) changed direction when the posterior segment of the inferior precentral sulcus was used as the posterior boundary for the pars opercularis (POP).