Abstract
Commentary on: “Number-space mapping in the newborn chick resembles humans' mental number lineâ€
Highlights
Concepts of “less” and “more,” it would be more efficient to re-use the system already in place for processing space (Holmes and Lourenco, 2011)
Considering numerical processing as an exaptation (Gould and Vrba, 1982) of spatial processing could explain the functional link between these two systems
An important caveat to these hypotheses is that one-to-one homologies between avian and mammalian brain regions remain elusive (Jarvis et al., 2005)
Summary
Concepts of “less” and “more,” it would be more efficient to re-use the system already in place for processing space (Holmes and Lourenco, 2011).
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