1.   Both heart rates and cortisol concentrations were markedly higher when the gamblers played for money.

2.   Gamblers already can play with fake money on a test version of the site.

3.   Gamblers play for entertainment, for the addictive rush of expectations, or simply because the potential gain is so high.

4.   The first lottery in the United States that gamblers can play by telephone or on the Internet was launched Tuesday by an Idaho Indian tribe.

5.   They also allow gamblers to play more than one game at once, with greater potential winnings if they play the maximum number of coins.

6.   They say the terminals are not slot machines, in which a gambler plays against an individual machine.

7.   While the gamblers played, Meyer measured changes in their heart rates and levels of the stress hormone cortisol in their saliva.

8.   If the gamblers play big, the casino pays the perks.