Footfalls above "we would see the tracing on the stage floor of a tremendously elongated variation of the figures 8 turned on its side … the mathematical symbol for infinity." Beckett was also indebted to the French psychologist Pierre Janet for his conception of hysterical behaviour. In his overview of Janet's work, Robert Woodworth in his "Contemporary Schools of Psychology", a work Beckett read, pays particular attention to Janet's description of the "hysterical paralysis of one arm", which Beckett incorporated, into May's posture. There are a number of analogies between "Footfalls" and Janet's work with a patient called Irène: He lists
Infinity on High the US to date February 2013. It was the band's first US number one album and second consecutive top ten effort, as its previous release, "From Under the Cork Tree", peaked at number nine. The album spent its first six weeks in the top ten, out of a total of fifty two chart weeks. "Infinity on High" also opened at number one on "Billboard"'s Rock Albums, Tastemaker Albums, and Digital Albums charts, with over 27,000 digital sales making up the total first week tally. In its second week, it fell to number five on the "Billboard" 200, selling 119,000 copies