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Four propagating components in turtle olfactory bulb with odor stimulus. (A) The DC component propagating from rostral to almost the entire bulb. (B–D) Three oscillatory components with different initiation loci, different propagation direction, and ranges (labeled by line circles). The center of the middle oscillation (B) remained relatively fixed. (Reprinted from Lam and others 2000, with permission from the Society for Neuroscience.)
