Table 2.

Stereological parameters for orexinergic bouton counts. AC, anterior cingulate cortex; OC, occipital cortex.

Common name	Species name	Counting frame size (μm)	Sampling grid size (μm)	Rectangular width (μm)	Rectangular length (μm)	Cortical area examined (μm2)	Cut thickness (μm)		Average mounted thickness (μm)		Vertical guard zones (top and bottom, μm)	Section interval	Number of sampling sites		CE (Schmitz)
							AC	OC	AC	OC			AC	OC	AC	OC
Domestic pig	Sus scrofa	233.3 × 233.3	500 × 500	1500	2000	3 000 000	50	50	28.1	28.1	5	2	43	34	0.15	0.17
Nubian ibex	Capra nubiana	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	28.0	27.7	5	2	37	33	0.16	0.17
Springbok	Antidorcas marsupialis	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	30.6	29.1	5	2	33	44	0.17	0.15
Arabian oryx	Oryx leucoryx	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	28.2	28.0	5	2	37	36	0.16	0.17
Blue wildebeest	Connochaetes taurinus	233.3 × 233.3	500 × 500	1500	1750	2 625 000	50	50	28.7	25.4	5	2	40	45	0.16	0.15
African buffalo	Syncerus caffer	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	27.9	27.3	5	2	36	50	0.17	0.14
Dromedary camel	Camelus dromedarius	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	32.8	28.9	5	2	33	40	0.17	0.16
Nyala	Tragelaphus angasii	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	27.7	27.7	5	2	33	37	0.17	0.16
River hippopotamus	Hippopotamus amphibius	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	28.4	26.8	5	2	33	40	0.17	0.16
Giraffe	Giraffa camelopardalis	233.3 × 233.3	500 × 500	1500	1500	2 250 000	50	50	32.1	28.5	5	2	36	45	0.17	0.15
Harbour porpoise	Phocoena phocoena	233.3 × 233.3	500 × 500	1500	2000	3 000 000	50	50	29.1	28.1	5	2	60	61	0.13	0.13
Minke whale	Balaenoptera acutorostratus	233.3 × 233.3	500 × 500	1500	2500	3 750 000	50	50	30.8	28.4	5	2	58	94	0.13	0.10