Table 1.

Sizes of the nuclei of the SOC (mm³) and the LSO/MNTB and LSO/MSO ratios

	MNTB	LSO	MSO	LSO/MNTB	LSO/MSO
Human	0.01	3.01	2.75	301	1.1
Bonobo	0.03	2.99	2.51	100	1.1
Chimpanzee	0.08	3.28	2.97	41	1.1
Gorilla	0.11	4.86	2.93	44	1.7
Orangutan	0.18	4.98	3.22	28	1.6
Gibbon	0.21	0.49	0.33	2.3	1.5
Macaca	0.24	0.55	0.29	2.3	1.9