| | 1 | Author
| David Dvorak, Allan Snyder | Requires cookie* | | | Title
| The Relationship between Visual Acuity and Illumination in the Fly, Lucilia sericata  | | | | Abstract
| The variation in visual acuity with illumination has been studied by monitoring the extracellular response of direction sensitive motion detecting neurons to a drifting sine wave grating displayed upon an oscilloscope spreen. Acuity reaches a maximum value of 0.46 cycles/degree at luminances above 1.0 cd/m2 and decreases gradually over a 3.8 log unit attenuation in intensity to a minimum value of 0.05 cycles/degree. The results have been compared with theoretical acuity curves for the coupound eye with various dark adaptation mechanisms. The analysis indicates that a major strategy of dark adaptation in the fly is a process involving intensity-dependent neural summation of signals from photoreceptors having different visual axes. | | | |
Reference
| Z. Naturforsch. 33c, 139 (1978); received November 9 1977 | | | |
Published
| 1978 | | | |
Keywords
| Diptera, Insect, Vision, Visual Acuity, Electrophysiology | | | |
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| default:Reihe_C/33/ZNC-1978-33c-0139.pdf | | | | Identifier
| ZNC-1978-33c-0139 | | | | Volume
| 33 | |
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