MAKE A MEME
View Large Image
| View Original: | Scintillating scotoma.gif (553x415) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Scintillating scotoma.gif scintillating scotoma experienced by the author in June 2011 It is to be looked on at the center of the image The aura was shaped like a spiral starting in the center of the vision field passing over upper left quadrant and reaching limit of vision field at lower left border The scintillations of the aura had some resemblance to a Widmanstätten pattern and made it relatively easy to make out the borders of the aura which were relatively well demarcated from normal areas It was impossible to distinguish any shapes within the aura but similarly to the physiological blind spot it melted into the background with the overall coloring appearing to represent that of the target objects in the environment No obvious zigzag pattern was seen Onset was over a few minutes and it faded away rather than decreased in area over approximately 30 minutes It was succeeded by no or negligible headache Scotomas had been experienced before at frequencies of approximately one to two times per year and of similar duration but not with as clearly demarcated scintillating areas as on this occasion A previous brain CT-scan was normal own thumb left Original photo without aura Mikael Häggström gallery of 2014 2011-06-21 thumb left Previous version before attempt to visualize the en Widmanstätten pattern Widmanstätten pattern Cc-zero Scintillating scotoma Animated GIF | ||||
