We believe that names have a powerful influence on the experiments we do and the way in
which we think. For this reason, and in the light of new evidence about the function and …

… Lissek and Güntürkün [47] introduced a new experimental design that is able to differentiate
these two constituents by forcing the animals to first wait during presentation of a red light …

Assumptions on the neural basis of cognition usually focus on cortical mechanisms. Birds
have no cortex, but recent studies in parrots and corvids show that their cognitive skills are on …

Comparative studies suggest that at least some bird species have evolved mental skills similar
to those found in humans and apes. This is indicated by feats such as tool use, episodic-…

The aim of this study was (a) to show that different measures of spatial cognition are modulated
by the menstrual cycle and (b) to analyze which steroid is responsible for these cognitive …

Little is known about the hormonal effects of puberty on the anatomy of the developing
human brain. In a voxel-based morphometry study, sex-related differences in gray matter (GM) …

The biological mechanisms underlying long-term partner bonds in humans are unclear. The
evolutionarily conserved neuropeptide oxytocin (OXT) is associated with the formation of …

In humans, interpersonal romantic attraction and the subsequent development of monogamous
pair-bonds is substantially predicted by influential impressions formed during first …

Functional cerebral asymmetries, once thought to be exclusively human, are now accepted
to be a widespread principle of brain organization in vertebrates [1]. The prevalence of …

This study examines the modulation of functional cerebral asymmetries by gonadal hormones
in three distinct groups. Young, normally cycling women performed a prototypical left (…