"Strung Out" was the fourth single from Street Talk, and it charted (at #40), before fading into relative obscurity (until now, that is). The video was shot after "Oh Sherrie," but plays like a slightly amusing prequel (for those who are not familiar with "Oh Sherrie," just watch them back-to-back).
While "Strung Out" is admittedly pretty basic (i.e., commercial), I have always had a soft spot for it (call it a guilty pleasure). It is, I think, a catchy, well crafted song.
After Street Talk, Perry waived over whether to leave Journey, and actually started work on a follow up album, tentatively called Against the Wall. Eventually, Perry returned to Journey and sang on 1987's Raised on Radio, before leaving the band (Perry actually left the industry as well, for 7 years). Against the Wall was never finished, but a few of the songs made it on to Perry's 1994 solo album For the Love of Strange Medicine.