Table 2. Oxygen consumption averaged per neuron.

Whole brain
Species	Brain mass*	Oxygen use per gram§(ml/g.min)	Total oxygen use (ml/min)	Nbrain	Oxygen use per neuron(ml/min)	O/N	N/mg
rat	1.802	0.084	0.151	200.13×106	7.54×10−10	0.657	111,060
monkey	87.346	0.060	5.241	6.38×109	8.21×10−10	1.122	73,043
baboon	148.80	0.034	5.059	10.91×109	4.64×10−10	0.828	73,320
human	1508.91	0.035	52.812	86.06×109	6.14×10−10	0.983	57,034
variation	837×	2.5×	350×	430×	1.8×	1.7×	1.9×

*Our data: references 23–27.

^§From [20] (references therein).