Fifty years ago CAG Wiersma established that the giant axons of the crayfish nerve cord
drive tail-flip escape responses. The circuitry that includes these giant neurons has now …

Serotonin, social status and aggression appear to be linked in many animal species,
including humans. The linkages are complex, and, for the most part, details relating the …

The amine serotonin has been suggested to play a key role in aggression in many species
of animals, including man. Precisely how the amine functions, however, has remained a …

To investigate the role of certain neurohormones in agonistic behaviour, fights were staged
between pairs of size-matched male shore crabs Carcinus maenas, and blood samples …

In the animal kingdom, biogenic amines are widespread modulators of the nervous system
that frequently interact to control mood. Our previous investigations in crayfish (Procambarus …

The colonic migrating motor complex (CMMC) is a critical neurally mediated rhythmic
propulsive contraction observed in the large intestine of many mammals. It seems to be …

One of the lessons learned from studying the nervous systems of phylogenetically distant
species is that many features are conserved. Indeed, aminergic neurons in invertebrate and …

Animals commonly modify their behavior in the presence of a conspecific or in response to
signals. This is particularly true in the context of aggressive exchanges, which animals use …

Social rank functions to facilitate coping responses to socially stressful situations and
conditions. The evolution of social status appears to be inseparably connected to the …

Immunocytochemical mapping of serotonergic and octopaminergic neurons in the central
nervous system of the squat lobster Munida quadrispina reveal approximately 120 serotonin …