Crabs combine the input from their two eyes early on in their brain's visual pathway to track a moving object, finds new research published inJNeurosci. This study of adult male crabs from Argentina's Atlantic coast provides insight into the visual world of a crustacean.
广泛的眼睛和visually guided behaviors of the crabNeohelice granulatasuggest this highly social predator may compute visual parameters of moving targets by combining input from both eyes, but it is unclear where and how the two sources of visual information are merged and processed.
By manipulating the animals' visual field and recording the activity of motion-sensitive lobula giant neurons while a moving bar was presented on computer screens, Daniel Tomsic and colleagues demonstrate that these cells perform complex integrations of visual information from both eyes. Such binocular visual processing may be important for the species' ability to capture prey and interact with other crabs.
The study shows the amenability of these animals for exploring neurocomputations underlying binocular behavioral tasks.
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