If Nemo hadn’t ended up in a dentist’s fish tank, it’s possible an older region in the back of his brain could have kicked in to help him find his way home.
. “The brain sends that error signal to its motor control centers so the fish can correct after being moved by flow unintentionally, even many seconds later.”
This video shows a virtual reality environment for larval zebrafish. The fish traverses a 2D environment in the presence of a simulated water flow. CREDIT: Misha Ahrens.performed actions related to reaching and locomotion , but not this type of navigation. According to the team, this hindbrain network could also lay the basis for other navigational skills, including when a fish swims to a specific spot to take shelter.
“This is a very unknown circuit for this form of navigation that we think might underlie higher order hippocampal circuits for exploration and landmark-based navigation,” said Misha Ahrens, Janelia Senior Group Leader,Further study is needed to determine whether these same networks are involved in similar behavior in other animals.
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