Efficient searching for resources such as food by animals is key to their survival. It has been
proposed that diverse animals from insects to sharks and humans adopt searching patterns
that resemble a simple Lévy random walk, which is theoretically optimal for 'blind foragers' to
locate sparse, patchy resources. To test if such patterns are generated intrinsically, or arise
via environmental interactions, we tracked free-moving Drosophila larvae with (and without)
blocked synaptic activity in the brain, suboesophageal ganglion (SOG) and sensory …