Head direction maps remain stable despite grid map fragmentation

Head direction maps remain stable despite grid map fragmentation

Areas encoding space in the brain contain both representations of position (place cells and grid cells) and representations of azimuth (head direction cells). Previous studies have already suggested that although grid cells and head direction cells reside in the same brain areas, the calculation of head direction is not dependent on the calculation of position. Here we demonstrate that realignm...

Green woodhoopoe Phoeniculus purpureus territories remain stable despite group-size fluctuations

Cooperatively breeding groups may be constrained in size by the territory available to them, or territories may be expanded to accommodate extra group members. Here, we show that there was no relationship between the number of adult green woodhoopoes Phoeniculus purpureus in a group and the size of its territory. Furthermore, territories were remarkably stable between seasons, with no significa...

Prostate cancer screening rates remain stable despite recommendations against testing men with limited life expectancy.

The balance of benefits and harms of screening for prostate cancer are controversial. In 2008, the US Preventive Services Task Force issued a guideline that recommended against PSA-based screening for men aged 75 years and older because the likelihood of benefit from screening men with approximately 10 years of remaining life expectancy (RLE) was low. This was updated in 2012 to recommend again...

Relative Compactness and Product Stable Quotient Maps

Stable Exponentially Harmonic Maps Between Finsler Manifolds