Can You Feel Me Now?

摘要

Communication within a species is most effective when it is exclusive, so it is beneficial to recognize signals from your own kind and exclude those made by others, Some fish species living in muddy rivers overcome the challenge of living in a low-visibility environment by electrical signaling. While studying the distinctive patterns of discharges from African electrical fish, Carlson et at. (p. 583) discovered that the evolution of key sensory processing regions in the brain allowed for rapid diversification in one group but was minimal in a closely related group that had diverged prior to the evolution of the sensory innovations.