A Durham University team questioned 200 students about their caffeine intake, the journal Personality and Individual Differences reported.
However, academics say the findings do not prove a "causal link".
They also stress that experiencing hallucinations is not a definite sign of mental illness and that about 3% of people regularly hear voices.
"This is the first step toward looking at the wider factors associated with hallucinations," said psychology PhD student Simon Jones, who led the study.
Could it be that anyone who drinks seven cups of instant coffee is already a little crazy? If you like coffee that much, invest in a real brewing machine! Link -Thanks, Jee!
I have take a lot of caffeine on a couple of occasions via "energy" drinks when pulling all-nighters. I started seeing things in my peripheral vision
There are other alternatives to dry instant as well; one I've tried is Java Juice; it's a liquid extract you mix with water. Flavor is good, but the cost is a bit high; about $1 a packet, and one packet doesn't make a cup as strong as I'd like.
And I should also add that 2 cups (actually, good-size mugs) is my max for a day. No pink elephants for me, thanks.
http://en.wikipedia.org/wiki/Caffeine#Caffeine_intoxication
vertol is right. This isn't exactly news. Too much coffee can really mess with a person.