Theories of human cognition prominently feature ‘Broca’s area’, which causally contributes to a myriad of mental functions. However, Broca’s area is not a monolithic, multipurpose unit – it is structurally and functionally heterogeneous. Some functions engaging (subsets of) this area share neurocognitive resources, whereas others rely on separable circuits. A decade of converging evidence has […]

The current longitudinal study examined factors (sex, physical function, response to novelty, ability to adapt to a shift in light/dark cycle, brain connectivity), which might predict the emergence of impaired memory during aging. Male and female Fisher 344 rats were tested at 6, 12, and 18 months of age. Impaired spatial memory developed in middle-age […]

It is widely recognized that within mammalian societies an individual may be simultaneously a leader of collective behavior and hold a position of high status. Drawing from a comparative perspective, we recently suggested that some leaders are of low status or emerge in egalitarian societies lacking dominance hierarchies [1]. Furthermore, we noted that some high-ranking […]