Methodological considerations on the use of template matching to study long - lasting memory

1. The 'Cyborg Drive' Recording Technology Following the first generation 'Warp Drive' that holds 144 single micro-electrodes (Hoffman and McNaughton, 2002; Battaglia et al., 2004), the 'Cyborg' Drive was developed in collaboration with Neuralynx, Inc. (Tucson, AZ). The Cyborg Drive holds 240 electrodes in a 12x20 array with 675 micron spacing between cannulae (Figure S1). The advantages of the drive include the following: (1) each electrode can be positioned independently, (2) no head-stage is required because preamplifiers are integrated onto the drive, and (3) it has a compact (H: 45 mm, W: 35 mm, and D: 25mm) and light-weight design (~40g). The Cyborg Drive extends over a rectangular area of 13 mm x 9 mm, covering multiple areas of the rat cortex (Figure S1B). Figure S2 shows the location of the electrodes where spike signals were recorded. The left and right panels represent the 50-hr recording with a single exposure epoch and the 50-hr recording with dual exposure epochs,