“…In complex tasks, visual feedback has also been provided by abstract visualizations (Crowell & Davis, 2011;Debaere, Wenderoth, Sunnaert, Van Hecke, & Swinnen, 2003, 2004Eaves et al, 2011;Eriksson et al, 2011;Hurley & Lee, 2006;Kovacs & Shea, 2011;Lee et al, 1990;Lee, Swinnen, & Verschueren, 1995;Maslovat et al, 2009;Smethurst & Carson, 2001;Snodgrass et al, 2010;Swinnen et al, 1998;Swinnen et al, 1997;Wishart et al, 2002;Wulf et al, 1999;Wulf et al, 1998). For complex interlimb coordination tasks, a displacement-displacement plot (Lissajous figure) has been used in many studies as an abstract concurrent feedback (Debaere et al, 2003(Debaere et al, , 2004Kovacs & Shea, 2011;Maslovat et al, 2009;Ronsse, Puttemans, et al, 2011;Smethurst & Carson, 2001;Swinnen et al, 1998;Swinnen et al, 1997).…”