. >> dr. joseph rizzo says the research is still out on virtual reality. question about whether that much expo sure to artificial visual stimuli will alter the way the brain accepts and processes visual information. >>> the challenge for the eyes and the brain when using virtual reality is putting the images close to the face but tricks your brain into seeing depth. we don't know what that conflict might mean for any user. >> the immediate concerns have to do with the younger users because thl the devices for a much longer period of time. >> concerns like a possible increase risk of becoming near sided or how a young brain develops. >> you need to understand whether the brain is changing in some permanent way. >> we encourage, time periods limited to 30 minutes or so. >> the question remains if the research will catch up with the be done quickly because the devices are available, there is going to be an explosion in their availability in use in the next years. it is happening . that was cool. >> it was amazing. >> wbz news. >>> did you know there was twoma

joseph rizzo of mass says the research is still out. >> there is a legitimate question about whether that much exposure to artificial brain accepts and processes visual information. it is an unknown. >> the image is up close to the face but it tricks your brain in to seeing depth. we don't know what that conflict might mean for any user. >> the immediate concerns have to do more with the younger users because they will be prone to use the devices for much longer period of time. >> concerns like a possible increase risk of sited or how a young brain develops. >> you need to understand whether the brain is changing in some permanent way. >> what would your advice be to parents? >> you should encourage judicious use of the devices and with time period limited to 30 minutes. >> the question remains if the research will catch up with the technology. >> well there is a lot of research that needs to be done and it should be done pretty quickly because the devices are available and there is going to be explosion in their report coming up next. >>> welcome back everybody. there are conflictin

joseph rizzo says the research is still out on virtual reality. >> there is a legitimate question about whether that much exposure to artificial visual stimuli will alter the processes visual information. it is an unknown. >> the challenge for the eyes and the brain is that the images are close to the face but tricked your brain into seeing depth. we don't know what that conflict might mean for any user. >> the younger users will be prone to using the devices for a long period of time. >> concerns like a possible increase risk of becoming near sided or how a young brain develops . you understand whether the brain is changing in some permanent way. >>> what would your advice be to parents? >> under encourage use, perhaps with time periods limited to 30 minutes or so. >>> the question remains if the research will catch up with the technology. >> a lot of research should be done quickly because the devices are available and there is going to be an explosion in their availability and use in >>> dr. mallika marshall, wbz news. >>> it is 6:40 we'll have a check of today's top stories includin