Binocular Mirror-Symmetric Microsaccadic Sampling EnablesDrosophilaHyperacute 3D-Vision
| Autor: | Jouni Takalo, James Hurcomb, Jasper Frohn, Chi-Hon Lee, Paulus Saari, Andra Antohi, Rajmund Mokso, Marko Huttula, Keivan Razban Haghighi, Zhuoyi Song, Mikko Juusola, Neveen Mansour, Fabian Westermeier, James McManus, Jussi-Petteri Suuronen, Mark Hampton, Marina Eckermann, Gábor Lékó, Hugo Hoekstra, Roger C. Hardie, Florence Blanchard, Joni Kemppainen, Ben Scales |
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| Rok vydání: | 2021 |
| Předmět: |
0303 health sciences
Channel (digital image) business.industry Computer science Sampling (statistics) Flow field 03 medical and health sciences 0302 clinical medicine Stereopsis 3d vision Receptive field Image motion Computer vision Artificial intelligence Microsaccade business 030217 neurology & neurosurgery 030304 developmental biology |
| Popis: | Neural mechanisms behind stereopsis, which requires simultaneous disparity inputs from two eyes, have remained mysterious. Here we show how ultrafast mirror-symmetric photomechanical contractions in the frontal forward-facing left and right eye photoreceptors giveDrosophilasuper-resolution 3D-vision. By interlinking multiscalein vivoassays with multiscale simulations, we reveal how these photoreceptor microsaccades - by verging, diverging and narrowing the eyes’ overlapping receptive fields - channel depth information, as phasic binocular image motion disparity signals in time. We further show how peripherally, outside stereopsis, microsaccadic sampling tracks a flying fly’s optic flow field to better resolve the world in motion. These results change our understanding of how insect compound eyes work and suggest a general dynamic stereo-information sampling strategy for animals, robots and sensors.Significance statementTo move efficiently, animals must continuously work out their x,y,z-positions in respect to real-world objects, and many animals have a pair of eyes to achieve this. How photoreceptors actively sample the eyes’ optical image disparity is not understood because this fundamental information-limiting step has not been investigatedin vivoover the eyes’ whole sampling matrix. This integrative multiscale study will advance our current understanding of stereopsis from static image disparity comparison to a new morphodynamic active sampling theory. It shows how photomechanical photoreceptor microsaccades enableDrosophilasuper-resolution 3D-vision and proposes neural computations for accurately predicting these flies’ depth-perception dynamics, limits, and visual behaviors. |
| Databáze: | OpenAIRE |
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