The BBC pundit has been discussing the 25-year-old midfielder.
Steve McClaren's men drew 2-2 with the Saints during an entertaining encounter at St James' Park and Jenas felt Sissoko was his side's driving force.
Indeed, the Magpies as a whole can be proud of their effort against the Southampton, according to the pundit, with the midfielder in particular the subject of praise.
Jenas said on Match of the Day: "I sensed more of an intensity, more of a desire. I think Steve McClaren and the players can be quite proud of their start to the season.
"He [Sissoko] sees the space and he attacks. Once he attacks it, he just keeps going. He has awareness and he was the driving force dragging Newcastle on."
Inspired by McClaren?
Sissoko has long been considered one of Newcastle's best players and no two words describe his dynamic playing style when he is at his best more than 'driving force.' But the 25-year-old received criticism aplenty last season and there is no denying his intensity dropped, as did the rest of the Newcastle squad's.
Enough has been said about that disastrous campaign, while it appears no one can be blamed for lacking motivation under a certain John Carver. Sissoko should still have done better, however, and he may just do so under the guidance of new boss McClaren this season.
As Jenas says, Sissoko looked dominant and was full of energy. More of the same will no doubt be welcome on Tyneside.