The nervous system is by far the most complex organ in C. elegans. Almost a third of all the cells in the body (302 out of 959 in the adult hermaphrodite to be precise) are neurons. 20 of these ...

Cognitive function and hormones are closely linked, with hormonal regulation of the nervous system acting in both positive and negative ways. Cortisol has been shown to reversibly reduce memory ...

Sama-vritti or an equal breath ratio, engages the parasympathetic nervous system and creates a relaxation response. This simple technique relieves stress, anxiety or agitation.

But, unlike vertebrate organisms, the octopus’s nervous system is also decentralized, with around 350 million neurons, or 66 percent of it, located in its eight arms.