The cover shows a degraded version of a natural image—in this case, an African lion—used to investigate neural correlates of learning. Monkeys were trained to identify such images and accompanying changes in the activity of visual cortext neurons were recorded. (See Rainer, et al.)
Image Credit: The cover image was provided by Gregor Rainer, Max Planck Institute for Biological Cynbernetics, and it is based on a public domain photo by Ken Stansell, U.S. Fish and Wildlife Service
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PLOS Biology: published February 17, 2004 | https://doi.org/10.1371/journal.pbio.0020063
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