The study of perceptual decision-making offers insight into how the brain uses complex,
sometimes ambiguous information to guide actions. Understanding the underlying …

Surely most chronobiologists believe circadian clocks are an adaptation of organisms that
enhances fitness, but are we certain that this focus of our research effort really confers a …

In the last three decades the two‐process model of sleep regulation has served as a major
conceptual framework in sleep research. It has been applied widely in studies on fatigue …

Daily rhythms in behavior and physiology are programmed by a hierarchical collection of
biological clocks located throughout the brain and body, known as the circadian system …

The increasing use of electric lights has modified the natural light environment dramatically,
posing novel challenges to both humans and wildlife. Indeed, several biomedical studies …

The circadian clock can only reliably fulfil its function if it is stably entrained. Most clocks use
the light–dark cycle as environmental signal (zeitgeber) for this active synchronisation. How …

Plasticity in daily timing of activity has been observed in many species, yet the underlying
mechanisms driving nocturnality and diurnality are unknown. By regulating how much wheel …

Different rat and mouse models are used in studies of social interactions. Simple behavioral
measures, which are commonly used in the laboratory, allow to perform relatively short …

Circadian clocks have evolved to synchronize physiology, metabolism and behaviour to the
24-h geophysical cycles of the Earth. Drosophila melanogaster's rhythmic locomotor …

Time as an ecological niche variable or “temporal niche” can be defined in the context of the
most prominent environmental cycles, including the tidal cycle, the lunar day and month, the …