With all due respect, what you're asking about is pretty obscure. I had a three-hour graduate course in sensation and perception, and I had never heard of the McCollough effect until I read your post and googled it. If you're wondering whether it is safe to try as a lark, I wouldn't. If the aftereffect were to last for days, weeks, or months, it could be very disturbing . As for whether it can cause cancer, I seriously doubt it, but for more detailed information on the McCollough effect, I think you would need to speak to a true expert on it.
Copyright 1994-2018MedHelp.All rights reserved. MedHelp is a division of Vitals Consumer Services, LLC.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.