“Tweeting is a lot like the nervous system,” Curator Rob DeSalle told the crowd that gathered on Wednesday, January 12 for the first-ever Tweetup at the American Museum of Natural History—a comparison all the more appropriate coming from DeSalle, who curated the Museum’s interactive exhibition Brain: The Inside Story.

The evening kicked off with an after-hours tour of the exhibition, where Tweeters got a look inside a dancer’s brain, tried connecting neurons, and attempted to speak foreign languages. There was also time to talk with DeSalle and co-curator Joy Hirsch.

After refreshments, tweeters headed behind the scenes to learn about the brains of other creatures from Museum scientists and to get a peek at Museum collections. Christine Johnson, a curatorial associate in the Division of Invertebrate Zoology, discussed group decision-making and chemical triggers in ants. Ronald Clouse, a post-doctoral researcher, presented specimens of crustaceans and a few echinoderms while discussing how some of these simple organisms make sophisticated decisions.

To see all the tweets about the event, look for the hashtag #AMNHTweetup or check out the photos on Flickr-and stay tuned for information about upcoming Tweetups at the American Museum of Natural History.