-everything psychological is simultaneously biological:
all the psychological expressions triggers or derives from a biological reaction in our body.
that mind and body are connected and cannot be separated from each other.
-the nervous system is complexity bulild from simplicity:
the nervous system is basically a network setup by simple neuron cells and all the neurons in the network can do is to decide to fire or not to fire.
-the brain is both specialized and integrated:
each section of brain is specialized for one type of task (e.g. regulating heartbeat) however each of such sections work together to keep the person alive!!!
-the nervous system is "plastic" especially at early ages of development:
when an infant is born s/he has a lot to learn therefore they have way more neurons than we have right now, although most of them are just individual neurons. as they grow up, the neurons form the network that will fit into the experience will be getting. If some part of the brain is damaged, the rest of the brain will compensate the damaged part.