Levels of the peptide amylin in the brain are related to loneliness; activating amylin neurons in the MPOA drives isolated mice to seek social contact.
By imaging the brain while zebrafish “swim” in virtual reality, scientists have learned that even fish can create internal models to predict future outcomes.
A new breed of lab mouse allows the study of naturally occurring melatonin. These mice will adjust better to jetlag than regular lab mice and experience daily torpor.