"I'm delighted to have signed Jamie on loan until January," Lowe is quoted by Herald Scotland as saying. "We were looking for another player in that area, and with the links between Bury and Rangers, and myself and Steven Gerrard, upon enquiry Jamie came highly recommended.
"I think when someone like Steven Gerrard recommends to you a midfielder with the career he has had then you don't look twice at it - you've got to take it, and that's what we've done.
"Jamie came down to train with us for a few days, and he was outstanding in training - he fitted the bill for what we are after. I'm really looking forward to working with him from now until January."
Barjonas has played nine first-team games for the Light Blues since his debut in August 2017.