Objective To examine whether a multicomponent commercial fitness app with very small (‘micro’) financial incentives (FI) increased population-level device-assessed physical activity (PA) over 2 years.

Pupil dilation provides a physiological readout of information gain during the brain's internal process of belief updating in the context of associative learning.

This important study combines optogenetic manipulations and wide-field imaging to show that the retrosplenial cortex controls behavioral responses to whisker deflection in a context-dependent manner.