Thanks to advances in technology, scientists in Japan have detected the thought that went through a baby zebrafish’s brain the moment it spotted some delicious food. Technically speaking, a double-transgenic larva was embedded in agarose, and a spot was presented on an LCD display placed on the right-eye side. Continue reading for the video and more information.

Ca2+ signals were detected on the left tectum upon appearance (ON) and disappearance (OFF) of the spot. The spot was shown for the first 3 s in this 6 s movie. The video is shown at 3x real time.