20% of volume of the brain are Blood vessels.
Glial cells are more numerous than neurons, except in Cerebellum
Number of neurons: ...
Density of neurons and conduction velocity is more important than size..
Large-scale connections
See Neuroscience
Very very diverse
Brain oscillations
Remarkably conserved accross mammalian species.
C-fos
DREADDs – chemogenetics/pharmacogenetics.