Sibo Gao

As the global population ages, the number of individuals living with chronic illness or cognitive impairment, and who need assistance with daily activities, is rising rapidly. By 2030, an estimated 1 in 6 people worldwide will be aged 60 years or older, and roughly 2 in 3 people who reach older age will require long-term support and care from others.1 Ng and colleagues2 identify an important, often-overlooked resource for assistance by examining the role of friends within the caregiving network.

The hippocampal activity supporting trace fear conditioning has long been mysterious, but a leading hypothesis posits “time-cell”-like sequential patterns. In this issue of Neuron, Ahmed et al. (2020) Ahmed M.S. Priestley J.B. Castro A. Stefanini F. Solis Canales A.S. Balough E.M. Lavoie E. Mazzucato L. Fusi S. Losonczy A. Hippocampal Network Reorganization Underlies the Formation of a Temporal Association Memory. Neuron.