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Free keywords:
zebrafish danio-rerio
larval zebrafish
brachydanio-rerio
visual-system
eye-movements
prey capture
electrical microstimulation
superior colliculus
reticular-formation
behavioral screen
Life Sciences & Biomedicine - Other Topics
Abstract:
The visual pathway is tasked with processing incoming signals from the retina and converting this information into adaptive behavior. Recent studies of the larval zebrafish tectum have begun to clarify how the 'microcircuitry' of this highly organized midbrain structure filters visual input, which arrives in the superficial layers and directs motor output through efferent projections from its deep layers. The new emphasis has been on the specific function of neuronal cell types, which can now be reproducibly labeled, imaged and manipulated using genetic and optical techniques. Here, we discuss recent advances and emerging experimental approaches for studying tectal circuits as models for visual processing and sensorimotor transformation by the vertebrate brain.
