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- W1948084824 abstract "Detecting the orientation and movement of edges in a scene is critical to visually guided behaviors of many animals. What are the circuit algorithms that allow the brain to extract such behaviorally vital visual cues? Using in vivo two-photon calcium imaging in Drosophila, we describe direction selective signals in the dendrites of T4 and T5 neurons, detectors of local motion. We demonstrate that this circuit performs selective amplification of local light inputs, an observation that constrains motion detection models and confirms a core prediction of the Hassenstein-Reichardt correlator (HRC). These neurons are also orientation selective, responding strongly to static features that are orthogonal to their preferred axis of motion, a tuning property not predicted by the HRC. This coincident extraction of orientation and direction sharpens directional tuning through surround inhibition and reveals a striking parallel between visual processing in flies and vertebrate cortex, suggesting a universal strategy for motion processing." @default.
- W1948084824 created "2016-06-24" @default.
- W1948084824 creator A5003565151 @default.
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- W1948084824 date "2015-10-01" @default.
- W1948084824 modified "2023-10-12" @default.
- W1948084824 title "Orientation Selectivity Sharpens Motion Detection in Drosophila" @default.
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- W1948084824 doi "https://doi.org/10.1016/j.neuron.2015.09.033" @default.
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