Thousands of histological sections of vertebrate brains—including from spiny dogfish, turtles and more—are newly available online.

Brief, seconds-long microarousals during deep sleep “ride on the wave” of locus coeruleus activity in mice and correlate with periods of waste clearing and memory consolidation, new research suggests.

The overlapping activity in the animals’ nucleus accumbens may underpin pair bonding, a new preprint suggests.