But although this rhythmically intermittent tetanus affecting alternately the flexors and extensors of the limb and giving the reflex step cannot be copied reflexly by employing excitation alone, it can be easily and faithfully reproduced and with perfect alternation of phase and with its characteristic asymmetrical bilaterality, by employing a stimulation in which reflex excitation and reflex inhibition are admixt in approximately balanced intensity.    From Wordnik.com.  [Sir Charles Sherrington - Nobel Lecture] Reference

It found that when memorizing and discriminating between faces, homosexual men show patterns of bilaterality - the usage of both sides of the brain - similar to heterosexual women.    From Wordnik.com.  [THE MEDICAL NEWS] Reference

While bilaterality is a defining characteristic of triploblastic animals, several assemblages have managed to break this symmetry in order to exploit the adaptive peaks garnered through the lateralization of behaviour or morphology.    From Wordnik.com.  [BioMed Central - Latest articles] Reference