The evolution of the brain may have been the primary engine behind the Cambrian Explosion. The "Brain-First Hypothesis" suggests that increasing ecological pressure for sensory processing led to neural regionalization. This neural complexity provided the genetic blueprints that were eventually co-opted to build the diverse and complex body plans seen in arthropods and chordates today.
The evolution of the brain may have been the primary engine behind the Cambrian Explosion. The "Brain-First Hypothesis" suggests that increasing ecological pressure for sensory processing led to neural regionalization. This neural complexity provided the genetic blueprints that were eventually co-opted to build the diverse and complex body plans seen in arthropods and chordates today.
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