Comparative studies on brain asymmetry date back to the 19th century but then largely
disappeared due to the assumption that lateralization is uniquely human. Since the …

Simple Summary We used to think of brains as symmetrical, functioning in the same way on
the left and right sides, but we now know that this is not so. From the small brains of insects …

Left-right asymmetries in brains are usually minor or cryptic. We report brain asymmetries in
the tiny, dorsal tubular nervous system of the ascidian tadpole larva, Ciona intestinalis …

The amygdala is a core structure in the neuronal network underlying emotion processing in
the vertebrate brain. Its structure and function have been extensively studied in both …

Why do the left and right sides of the brain have different functions? Having a lateralized
brain, in which each hemisphere processes sensory inputs differently and carries out …

Cat social behaviour and cognition has received a growing interest during the last decades.
Recent studies reported that cats efficiently engage in interspecific communication with …

In the 2010s, significant progress has been made in several key areas of laterality research,
including neuroimaging, genetics and comparative research. In the present article, we …

Lateralization is a fundamental principle of nervous system organization but its molecular
determinants are mostly unknown. In humans, asymmetric gene expression in the fetal …

Traditionally, only humans were thought to exhibit brain and behavioral asymmetries, but
several studies have revealed that most vertebrates are also lateralized. Recently, evidence …

Our goal in this chapter is to provide a concise introduction to the study of left–right
asymmetries in brain and behavior from a comparative perspective. We consider evidence …