Figure 1.
Healthy cortex maintained during a 2 year period. A, Similarity of blood vessel maps during a 26 month period. Four time points are shown (day 0, 6 months, 15 months, and 26 months). B, Electrophysiological mapping of areas 3a, 3b, and 1. The colored dots indicate electrode penetrations. Units in areas 1, 3b, and 3a are indicated by blue, green, and yellow dots, respectively. Letters following each digit number (as illustrated in the top left inset in B) indicate the precise locations of the receptive field (t, tip; mp, middle phalanx; b, base; p, palm; h, hairy). The dashed lines indicate approximate borders between areas 3a, 3b, and 1. C, Imaging session dates under either awake or anesthetized states (e.g., 020424 denotes April 24, 2002). Scale bars: A, 5 mm; B, 1 mm. M, Medial; L, lateral; A, anterior; P, posterior.