The muscles treasury survey. I. Motivation and overview by France, K, Loyd, ROP, Youngblood, A, Brown, A, Schneider, PC, Hawley, SL, Froning, CS, Linsky, JL, Roberge, A, Buccino, AP, Davenport, JRA, Fontenla, JM, Kaltenegger, L, Kowalski, AF, Mauas, PJD, Miguel, Y, Redfield, S, Rugheimer, S, Tian, F, Vieytes, MC, Walkowicz, LM, Weisenburger, KL