The changes will result in the 10-man team being made up of the leading six pointscorers over two years at the flagship Glenmuir PGA Professionals' Championship, the top-three finishers in the PGA Play-offs in the year prior to the PGA Cup and one, final captain's pick.
Previously, the team was decided solely by the leading pointscorers from the PGA Professionals' event.
GB&I have lost 17 of the 25 transatlantic tussles and, last September, a team captained by Cowal's Russell Weir lost 17½-8½ to the US in California. The new selection policy will come into force for next year's match at Slaley Hall.
"It is important to ensure we have our best players available and the advent of the PGA Play-offs in recent years gives us a second gateway to qualification and achieving that aim," said Sandy Jones, the PGA chief executive.
"So does the decision to reinstate the captain's pick. This was used in previous matches and gives the captain the chance to include a player of his choice whom he feels can add value to those who have already earned qualification."